Levothyroxine sodium side effects by duration, gender and age - a phase IV clinical study of FDA data

Summary:

Side effects are reported by people who take Levothyroxine sodium. Common side effects include drug ineffective among females and death among males.

The phase IV clinical study is created by eHealthMe based on 96,297 reports from the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

With medical big data and AI algorithms, eHealthMe enables everyone to run phase IV clinical trial to detect adverse drug outcomes and monitor effectiveness. Our original studies have been referenced on 600+ peer-reviewed medical publications including The Lancet, Mayo Clinic Proceedings, and Nature. Most recently, phase IV clinial trails for COVID 19 vaccines have been added, check here.

On Jun, 07, 2022

96,297 people who take Levothyroxine Sodium and have side effects are studied.

What is Levothyroxine Sodium?

Levothyroxine sodium has active ingredients of levothyroxine sodium. It is often used in hypothyroidism. eHealthMe is studying from 102,984 Levothyroxine sodium users for its effectiveness, alternative drugs and more.

Number of Levothyroxine sodium reports submitted per year:

* Approximation only. Some reports may have incomplete information.

Do you take Levothyroxine sodium?

Personalize this study to your gender and age

How to use the study?

You can discuss the study with your doctor, to ensure that all drug risks and benefits are fully discussed and understood.

How the study uses the data?

The study is based on levothyroxine sodium (the active ingredients of Levothyroxine sodium) and Levothyroxine sodium (the brand name). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered.

Related studies

Alternative drugs to, pros and cons of Levothyroxine sodium:

Levothyroxine sodium (102,984 reports)

Common Levothyroxine sodium side effects:

Abasia (inability to walk): 369 reports
Abdominal discomfort: 974 reports
Abdominal distension: 918 reports
Abdominal pain: 2,208 reports
Abdominal pain lower: 209 reports
Abdominal pain upper: 1,606 reports
Abnormal behavior: 301 reports
Abnormal dreams: 212 reports
Abortion spontaneous (naturally occurring miscarriage): 128 reports
Abscess (pus): 143 reports
Accidental exposure: 175 reports
Accidental overdose (therapeutic agent): 149 reports
Acne (skin problems that cause pimples): 167 reports
Activated partial thromboplastin time prolonged: 103 reports
Activities of daily living impaired: 274 reports
Acute coronary syndrome (acute chest pain and other symptoms that happen because the heart does not get blood): 118 reports
Acute kidney failure: 1,435 reports
Acute myocardial infarction (acute heart attack): 301 reports
Acute respiratory failure: 195 reports
Acute upper airway obstruction (blockage occurs in the upper airway): 120 reports
Adrenal insufficiency (condition in which the adrenal glands do not produce adequate amounts of steroids): 169 reports
Adverse drug reaction: 340 reports
Adverse event: 231 reports
Ageusia (loss of taste functions of the tongue): 230 reports
Aggression: 348 reports
Agitation (state of anxiety or nervous excitement): 1,043 reports
Agranulocytosis (a deficiency of granulocytes in the blood, causing increased vulnerability to infection): 1,071 reports
Alanine aminotransferase increased: 900 reports
Allergic rhinitis: 104 reports
Altered state of consciousness (altered state of mind): 115 reports
Anaemia (lack of blood): 2,487 reports
Anal fissure: 125 reports
Anaphylaxis (serious allergic reaction that is rapid in onset and may cause death): 321 reports
Anger: 213 reports
Angioedema (rapid swelling of the dermis): 298 reports
Anhedonia (inability to experience pleasure from activities usually found enjoyable): 279 reports
Ankle fracture: 129 reports
Anorexia (eating disorder characterized by immoderate food restriction and irrational fear of gaining weight): 502 reports
Anti-erythropoietin antibody positive: 109 reports
Anuria (failure of the kidneys to produce urine): 131 reports
Aortic valve incompetence: 114 reports
Aplasia pure red cell (type of anaemia affecting the precursors to red blood cells but not to white blood cells): 144 reports
Appetite - decreased (decreased appetite occurs when you have a reduced desire to eat): 1,995 reports
Appetite - increased (increased appetite is when you want to eat much more often or in larger quantities than your body requires): 229 reports
Application site erythema (redness of the skin at application site): 117 reports
Ards (acute respiratory distress syndrome) (sudden failure of the respiratory (breathing) system): 207 reports
Arrhythmias (irregular heartbeat): 1,447 reports
Arteriosclerosis coronary artery (thickening and hardening of arteries- coronary artery): 195 reports
Arthritis (form of joint disorder that involves inflammation of one or more joints): 678 reports
Arthropathy: 369 reports
Ascites (accumulation of fluid in the abdominal cavity): 314 reports
Aseptic necrosis (the death of bone tissue due to a lack of blood supply): 245 reports
Aspartate aminotransferase increased: 835 reports
Asphyxia (a condition in which there is an extreme decrease in the concentration of oxygen in the body): 119 reports
Asthma: 721 reports
Atelectasis (partial or complete collapse of the lung): 272 reports
Atherosclerosis (disorder of the arteries): 223 reports
Atrial fibrillation/flutter (atrial fibrillation and flutter are abnormal heart rhythms in which the atria, or upper chambers of the heart, are out of sync with the ventricles): 1,523 reports
Atrial septal defect (an abnormal opening between the left and right atria of the heart): 115 reports
Atrioventricular block (heart block): 107 reports
Atrioventricular block first degree (heart block first degree): 121 reports
Back disorder: 116 reports
Back pain: 2,065 reports
Bacterial infection: 127 reports
Balance disorder: 1,088 reports
Basal cell carcinoma (a skin cancer, it rarely metastasizes or kills): 147 reports
Belching (release of gas from the digestive tract): 158 reports
Bipolar disorder (mood disorder): 101 reports
Birth control: 115 reports
Bladder disorder: 127 reports
Bleeding disorders: 188 reports
Bleeding into the skin: 172 reports
Blindness: 220 reports
Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure): 452 reports
Blood albumin decreased: 182 reports
Blood alkaline phosphatase increased: 459 reports
Blood bilirubin increased: 403 reports
Blood calcium decreased: 295 reports
Blood calcium increased: 125 reports
Blood creatine phosphokinase increased: 437 reports
Blood creatinine increased: 968 reports
Blood glucose decreased: 332 reports
Blood glucose increased: 1,242 reports
Blood lactate dehydrogenase increased: 232 reports
Blood potassium decreased: 387 reports
Blood pressure fluctuation: 223 reports
Blood pressure management: 234 reports
Blood pressure systolic increased: 227 reports
Blood sodium decreased: 303 reports
Blood test: 101 reports
Blood thyroid stimulating hormone decreased: 293 reports
Blood thyroid stimulating hormone increased: 644 reports
Blood urea increased: 403 reports
Blood urine present: 136 reports
Body height decreased: 160 reports
Body temperature decreased: 103 reports
Body temperature increased: 161 reports
Bone disorder: 261 reports
Bone lesion (bone with abnormalities. bone lesions can result from growth formations, infections, or injuries): 102 reports
Bone marrow failure: 129 reports
Bone pain: 554 reports
Bradycardia (abnormally slow heart action): 762 reports
Breast cancer: 323 reports
Breast cancer female: 114 reports
Breast pain: 126 reports
Breathing difficulty: 4,680 reports
Breathing - slowed or stopped: 161 reports
Broken bone: 236 reports
Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 826 reports
Bronchospasm (spasm of bronchial smooth muscle producing narrowing of the bronchi): 141 reports
Bundle branch block left (absence of transmission of electric impulses from the atrioventricular (av) bundle of his to the left ventricle): 151 reports
Bundle branch block right (absence of transmission of electric impulses from the atrioventricular (av) bundle of his to the right ventricle): 158 reports
Burning sensation: 591 reports
Bursitis (inflammation of a bursa, typically one in the knee, elbow, or shoulder): 180 reports
Candidiasis (candidiasis or thrush is a fungal infection): 129 reports
Cardiac arrest: 589 reports
Cardiac disorder: 581 reports
Cardiac failure: 845 reports
Cardiac failure congestive: 1,038 reports
Cardiac murmur (an heart sound in valve abnormality): 226 reports
Cardioactive drug level increased: 165 reports
Cardiogenic shock (inadequate circulation of blood): 105 reports
Cardiomyopathy (weakening of the heart muscle): 174 reports
Cardio-respiratory arrest (sudden dysfunction of heart and lungs): 306 reports
Carpal tunnel syndrome (nerve compression at wrist results numbness weakness, pain , swelling): 195 reports
Cataract (clouding of the lens inside the eye): 492 reports
Cellulitis (infection under the skin): 636 reports
Cerebral atrophy (decrement in size of brain): 109 reports
Cerebral haemorrhage (bleeding within the brain): 239 reports
Cerebral infarction (less blood supply to brain resulting tissue damage): 191 reports
Chest pain: 2,825 reports
Chills (felling of cold): 1,024 reports
Cholecystitis (infection of gallbladder): 202 reports
Cholecystitis acute (rapid infection of gallbladder): 108 reports
Cholecystitis chronic (long lasting infection of gallbladder): 169 reports
Cholestasis (a condition where bile cannot flow from the liver to the duodenum): 230 reports
Chronic kidney disease: 329 reports
Chronic obstructive pulmonary disease (a progressive disease that makes it hard to breathe): 578 reports
Chronic thyroiditis (long lasting inflammation of thyroid gland): 115 reports
Circulatory collapse: 257 reports
Cognitive disorder (mental health disorders affects learning, memory, perception, and problem solving): 555 reports
Colitis (inflammation of colon): 349 reports
Colon cancer: 101 reports
Colonic polyp (extra part of colon tissue grow in intestine): 184 reports
Completed suicide (act of taking one's own life): 420 reports
Confusion: 698 reports
Confusional state: 1,855 reports
Conjunctivitis (pink eye): 111 reports
Consciousness - decreased: 397 reports
Constipation: 2,571 reports
Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body): 845 reports
Convulsions (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled of muscles contract and relax rapidly and repeatedly): 123 reports
Coronary artery occlusion (complete obstruction of blood flow in a coronary artery): 172 reports
Coronary heart disease (narrowing or blockage of the coronary arteries): 343 reports
Cough: 2,216 reports
Coughing up blood: 295 reports
C-reactive protein increased: 386 reports
Creatinine renal clearance decreased: 139 reports
Crohn's disease (condition that causes inflammation of the gastrointestinal tract): 142 reports
Crying: 249 reports
Cuts and puncture wounds: 162 reports
Cyst (a closed sac): 130 reports
Cytolytic hepatitis (dissolution or destruction of a liver cell): 221 reports
Death: 2,099 reports
Decreased interest: 108 reports
Deep venous thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis): 782 reports
Deformity (disfigurement): 137 reports
Dehydration (dryness resulting from the removal of water): 1,882 reports
Delirium (wild excitement): 347 reports
Delusion (a false belief or opinion): 121 reports
Dementia (madness): 196 reports
Dental caries: 157 reports
Depressed level of consciousness: 640 reports
Depressed mood: 445 reports
Depression: 2,421 reports
Dermatitis (inflammation of the skin resulting from direct irritation by an external agent or an allergic reaction to it): 340 reports
Device related infection: 116 reports
Diabetes: 662 reports
Diabetes mellitus inadequate control: 242 reports
Diabetic ketoacidosis (diabetic ketoacidosis (dka) is high concentrations of ketone bodies): 173 reports
Diarrhea: 5,019 reports
Difficulty in walking: 217 reports
Diffuse interstitial lung disease (group of lung diseases affecting the interstitium): 101 reports
Diplopia (double vision): 270 reports
Disability: 111 reports
Discomfort: 256 reports
Disease progression: 454 reports
Disease recurrence: 157 reports
Disseminated intravascular coagulation (systemic activation of blood coagulation): 139 reports
Disturbance in attention: 560 reports
Diverticulitis (digestive disease which involves the formation of pouches (diverticula) within the bowel wall): 275 reports
Diverticulum (out pouching of a hollow (or a fluid-filled) structure in the body): 217 reports
Dizziness: 4,577 reports
Drowsiness: 1,947 reports
Drug abuse and dependence: 110 reports
Drug administration error: 179 reports
Drug dependence: 138 reports
Drug effect decreased: 480 reports
Drug eruption (adverse drug reaction of the skin): 150 reports
Drug exposure during pregnancy: 285 reports
Drug hypersensitivity: 953 reports
Drug ineffective: 4,562 reports
Drug intolerance (drug sensitivity): 441 reports
Drug level increased: 160 reports
Drug toxicity: 255 reports
Drug withdrawal syndrome (interfere with normal social, occupational, or other functioning. are not due to another medical condition, drug use, or discontinuation): 297 reports
Dry eyes (lack of adequate tears): 284 reports
Dry mouth: 902 reports
Dry skin: 579 reports
Dyskinesia (abnormality or impairment of voluntary movement): 355 reports
Dyspnea exertional: 458 reports
Dysstasia (difficulty in standing): 245 reports
Ear pain: 256 reports
Eating disorder: 181 reports
Ecchymosis (a discoloration of the skin resulting from bleeding underneath): 210 reports
Eczema (patches of skin become rough and inflamed, with itching and bleeding blisters): 223 reports
Ejection fraction decreased (systolic heart failure): 160 reports
Electrocardiogram qt prolonged: 508 reports
Electrolyte imbalance: 161 reports
Emotional disorder: 205 reports
Emotional distress: 481 reports
Emphysema (chronic respiratory disease - over inflation of the air sacs (alveoli) in the lungs): 150 reports
Encephalopathy (functioning of the brain is affected by some agent or condition): 256 reports
Enlarged heart: 223 reports
Eosinophilia (eosinophil count in the peripheral blood exceeds): 160 reports
Epilepsy (common and diverse set of chronic neurological disorders characterized by seizures): 237 reports
Erection problems: 117 reports
Erythema multiforme (a type of hypersensitivity reaction): 321 reports
Escherichia infection (bacterial infection by escherichia coli): 107 reports
Exostosis (formation of new bone on the surface of a bone): 160 reports
Extrasystoles: 110 reports
Eye disorder: 248 reports
Eye haemorrhage (bleeding in the eye): 127 reports
Eye irritation: 167 reports
Eyelid oedema (eyelids are swollen and contain excessive fluid): 130 reports
Eye pain: 312 reports
Eye pruritus (eye itching): 182 reports
Eye swelling: 224 reports
Face oedema (swelling of face): 247 reports
Faecal incontinence (a lack of control over passing stool): 127 reports
Faeces discolored: 233 reports
Fainting (loss of consciousness and postural tone): 1,329 reports
Fall: 3,967 reports
Fatigue (feeling of tiredness): 7,190 reports
Fear: 256 reports
Febrile neutropenia (fever with reduced white blood cells): 308 reports
Feeling cold: 339 reports
Feeling hot: 568 reports
Feeling jittery: 190 reports
Femur fracture: 462 reports
Fever: 2,872 reports
Fibromyalgia (a long-term condition which causes pain all over the body): 238 reports
Flank pain (a distressing sensation experienced around the lower back and the upper abdomen): 103 reports
Flatulence (flatus expelled through the anus): 612 reports
Fluid overload (too much fluid in the blood): 113 reports
Fluid retention (an abnormal accumulation of fluid in the blood): 412 reports
Foetal exposure during pregnancy (exposing your unborn child to contraindicated in pregnancy leads birth defect): 253 reports
Foot fracture: 200 reports
Full blood count decreased: 198 reports
Fungal infection: 189 reports
Gait disturbance: 1,536 reports
Gallbladder disorder: 273 reports
Gallbladder removal: 138 reports
Gallstones (stone formation by bile component): 634 reports
Gamma-glutamyltransferase increased: 391 reports
Gastric disorder (disease of stomach): 322 reports
Gastric ulcer (stomach ulcer): 435 reports
Gastritis (inflammation of stomach): 425 reports
Gastritis erosive (a break in the surface layer of the membrane lining the stomach with infection): 170 reports
Gastroenteritis (inflammation of stomach and intestine): 247 reports
Gastroenteritis viral (inflammation of stomach and intestine caused by virus infection): 109 reports
Gastroesophageal reflux disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 964 reports
Gastrointestinal disorder (functional problems of gastrointestinal tract): 447 reports
Gastrointestinal haemorrhage (bleeding gastrointestinal tract): 814 reports
Generalised oedema (swelling all over the body): 140 reports
General physical health deterioration (weak health status): 1,445 reports
Gingival bleeding (bleeding gums): 147 reports
Glaucoma (increased fluid pressure in the eye with vision loss): 153 reports
Glossodynia (a burning or painful sensation in the tongue): 199 reports
Glycosylated haemoglobin increased: 141 reports
Gout (uric acid crystals building up in the body): 222 reports
Grand mal convulsion (a type of generalized seizure that affects the entire brain): 242 reports
Groin pain: 104 reports
Haematemesis (vomiting of blood): 324 reports
Haematochezia (passage of stools containing blood): 436 reports
Haematocrit decreased: 434 reports
Haematoma (collection of blood outside the blood vessels): 341 reports
Haematuria (presence of blood in urine): 320 reports
Haemoglobin decreased: 1,436 reports
Haemolytic anaemia (anaemia due to haemolysis): 104 reports
Haemorrhage (bleeding): 615 reports
Haemorrhoids (a swollen vein or group of veins in the region of the anus): 408 reports
Hair loss: 1,608 reports
Hallucination, auditory (perceiving sounds without auditory stimulus): 108 reports
Hallucinations (sensations that appear real but are created by your mind): 576 reports
Hallucination, visual (seeing things that aren't there): 190 reports
Headache (pain in head): 4,296 reports
Head discomfort: 112 reports
Head injury: 1,183 reports
Hearing impaired: 105 reports
Hearing loss: 155 reports
Heart attack: 1,167 reports
Heart disease: 122 reports
Heart palpitations (feelings or sensations that your heart is pounding or racing): 1,437 reports
Heart rate decreased: 376 reports
Heart rate increased: 849 reports
Heart rate irregular: 359 reports
Heavy or prolong menstrual bleeding: 119 reports
Hemiparesis (weakness on one side of the body): 202 reports
Hepatic cirrhosis (chronic liver disease characterized by replacement of liver tissue by fibrosis, scar tissue): 201 reports
Hepatic encephalopathy (spectrum of neuropsychiatric abnormalities in patients with liver failure): 118 reports
Hepatic enzyme increased: 491 reports
Hepatic failure (liver failure): 372 reports
Hepatic steatosis (fatty liver disease): 305 reports
Hepatitis (inflammation of the liver): 317 reports
Hepatomegaly (abnormal enlargement of the liver): 174 reports
Hepatotoxicity (chemical-driven liver damage): 107 reports
Hernia (hernia happens when part of an internal organ or tissue bulges through a weak area of muscle): 142 reports
Herpes zoster: 383 reports
Hiatal hernia (hernia resulting from the protrusion of part of the stomach through the diaphragm): 265 reports
High blood cholesterol: 909 reports
High blood pressure: 3,598 reports
Hip fracture: 323 reports
Hip joint replacement: 107 reports
Hoarseness or changing voice: 497 reports
Hospitalisation: 352 reports
Hot flush (sudden feelings of heat): 514 reports
Hypercalcaemia (elevated calcium (ca+) level in the blood): 197 reports
Hyperglycemia (high blood sugar): 383 reports
Hyperhidrosis (abnormally increased sweating): 1,104 reports
Hyperkalemia (damage to or disease of the kidney): 839 reports
Hyperlipidaemia (presence of excess lipids in the blood): 283 reports
Hypernatraemia (an abnormally high plasma concentration of sodium ions): 103 reports
Hypersensitivity: 1,079 reports
Hypertensive crisis: 141 reports
Hyperthyroidism (over activity of the thyroid gland): 426 reports
Hypoacusis (loss of hearing): 244 reports
Hypoaesthesia (reduced sense of touch or sensation): 1,243 reports
Hypoaesthesia oral (reduced sense of touch or sensation in mouth): 104 reports
Hypocalcaemia (levels of calcium in blood serum are abnormally low): 225 reports
Hypoglycemia (low blood sugar): 590 reports
Hypokalemia (low potassium): 746 reports
Hypomagnesaemia (electrolyte disturbance in which there is an abnormally low level of magnesium in the blood): 185 reports
Hyponatremia (abnormally low level of sodium in the blood; associated with dehydration): 1,117 reports
Hypophagia (reduced food intake): 225 reports
Hypopnea: 118 reports
Hypotension (abnormally low blood pressure): 2,885 reports
Hypothermia (body temperature drops below the required temperature for normal metabolism and body functions): 121 reports
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 1,488 reports
Idiopathic pulmonary fibrosis (chronic lung disease): 269 reports
Ill-defined disorder: 264 reports
Impaired healing: 406 reports
Impaired work ability: 121 reports
Inappropriate antidiuretic hormone secretion: 115 reports
Incontinence (lack of moderation or self-control): 127 reports
Increased tendency to bruise (increased tendency to injure the underlying soft tissue or bone): 123 reports
Indigestion: 963 reports
Infection: 827 reports
Inflammation: 430 reports
Influenza like illness: 586 reports
Infusion related reaction: 187 reports
Injection site bruising: 152 reports
Injection site burning: 125 reports
Injection site erythema (redness at injection site): 508 reports
Injection site haematoma (localized swelling filled with blood at injection site): 188 reports
Injection site haemorrhage (bleeding from injection site): 389 reports
Injection site irritation: 129 reports
Injection site pain: 734 reports
Injection site pruritus (severe itching at injection site): 270 reports
Injection site reaction: 424 reports
Injection site swelling: 199 reports
Injury: 742 reports
Insomnia (sleeplessness): 2,224 reports
Intentional overdose: 160 reports
International normalised ratio increased: 696 reports
Interstitial lung disease: 323 reports
Interstitial nephritis (inflammation of the kidney): 118 reports
Intervertebral disc degeneration (spinal disc degeneration): 226 reports
Intervertebral disc protrusion (spinal disc protrusion): 290 reports
Intestinal obstruction: 320 reports
Iron deficiency anaemia: 141 reports
Irritability: 478 reports
Irritable bowel syndrome: 168 reports
Ischaemic stroke (stroke; caused by an interruption in the flow of blood to the brain): 110 reports
Itching: 2,373 reports
Jaundice - yellow skin (a yellowish pigmentation of the skin): 387 reports
Jaw disorder (jaw disease): 108 reports
Joint effusion (presence of extra fluid in joint covering): 109 reports
Joint injury: 181 reports
Joint pain: 2,994 reports
Joint range of motion decreased (disease of joint movement): 143 reports
Joint stiffness: 276 reports
Joint swelling: 934 reports
Kidney infection: 165 reports
Kidney infection (pyelonephritis): 119 reports
Kidney stones: 304 reports
Knee joint replacement: 152 reports
Lacrimation increased: 222 reports
Lactic acidosis (low ph in body tissues): 273 reports
Left ventricular failure (left ventricle fails to contract forcefully): 169 reports
Left ventricular hypertrophy (the thickening of the myocardium (muscle) of the left ventricle of the heart): 114 reports
Leukocytosis (increased white blood cells): 226 reports
Leukopenia (less number of white blood cells in blood): 459 reports
Limb discomfort (discomfort in leg): 209 reports
Limb injury: 177 reports
Lip swelling: 245 reports
Liver disorder (liver diseases): 292 reports
Localised infection (infection at the single location): 187 reports
Local swelling (swelling at the site of some application of substance or injury): 136 reports
Loss of consciousness: 1,270 reports
Lower limb fracture: 124 reports
Lower respiratory tract infection: 351 reports
Low tissue oxygen: 357 reports
Low turnover osteopathy (slow removal of old bone and its replacement by new bone): 139 reports
Lung disorder (lung disease): 392 reports
Lung infection: 150 reports
Lung infiltration (a substance that normally includes fluid, inflammatory exudates or cells that fill a region of lung): 148 reports
Lung neoplasm (tumour of lung): 129 reports
Lung neoplasm malignant (cancer tumour of lung): 129 reports
Lymph follicular hypertrophy (an increase in the size of the lymph node follicles): 382 reports
Lymphocyte count decreased: 127 reports
Lymphoma (cancer that begins in immune system cells): 119 reports
Lymphopenia (an abnormally low level of lymphocytes in the blood): 102 reports
Macular degeneration (painless eye condition that leads to the gradual loss of central vision): 112 reports
Malaise (a feeling of general discomfort or uneasiness): 3,200 reports
Malignant neoplasm progression (cancer tumour came back): 463 reports
Malnutrition (condition that results from eating a diet in which certain nutrients are lacking): 156 reports
Mania (a state of abnormally elevated or irritable mood): 171 reports
Maternal drugs affecting foetus (chemical affecting the baby before birth taken by mother): 148 reports
Maternal exposure during pregnancy (use of substance during pregnancy): 274 reports
Melaena (the passage of black, tarry stools): 256 reports
Memory loss: 1,628 reports
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability): 300 reports
Mental impairment (a condition affecting the body, perhaps through sight or hearing loss, a mobility difficulty or a health condition): 190 reports
Mental status changes (general changes in brain function, such as confusion, amnesia (memory loss), loss of alertness, loss of orientation): 418 reports
Metabolic acidosis (body produces too much acid, or when the kidneys are not removing enough acid from the body): 284 reports
Metastases to bone (cancer spreads to bone): 145 reports
Metastases to liver (cancer spreads to liver): 169 reports
Micturition urgency (urgency to pass the urine): 145 reports
Middle insomnia (difficulty returning to sleep after awakening either in the middle of the night): 133 reports
Migraine (headache): 528 reports
Mitral valve incompetence (inefficient heart valve): 320 reports
Mobility decreased (ability to move is reduced): 564 reports
Mood swings (an extreme or rapid change in mood): 327 reports
Mouth ulcers: 215 reports
Movement disorder (neurological syndromes where they may be excess of movement or a paucity of movement that is not connected to weakness): 218 reports
Movement - uncontrolled or slow: 125 reports
Movement - uncoordinated: 172 reports
Mucosal inflammation (infection of mucous membrane): 206 reports
Multi-organ failure (multisystem organ failure): 360 reports
Multiple injuries: 123 reports
Multiple myeloma (cancer of the plasma cells): 255 reports
Multiple sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 245 reports
Multiple sclerosis relapse (reoccurrence of a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 255 reports
Muscle aches (muscle pain): 1,704 reports
Muscle atrophy (a decrease in the mass of the muscle): 126 reports
Muscle cramps (painful sensations caused by muscle contraction): 120 reports
Muscle rigidity (muscle stiffness): 108 reports
Muscle spasms (muscle contraction): 1,588 reports
Muscle tightness: 131 reports
Muscle twitching: 308 reports
Musculoskeletal chest pain (pain in chest muscle or nerve or bones): 180 reports
Musculoskeletal discomfort (discomfort in the body's muscles, joints, tendons, ligaments and nerves): 159 reports
Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves): 610 reports
Musculoskeletal stiffness (stiffness of the body's muscles, joints, tendons, ligaments and nerves): 552 reports
Myelodysplastic syndrome (a group of conditions that occur when the blood-forming cells in the bone marrow are damaged): 149 reports
Myocardial ischaemia (the blood flow through one or more of the blood vessels that lead to heart (coronary arteries) is decreased): 214 reports
Myoclonus (a brief, involuntary twitching of a muscle or a group of muscles): 111 reports
Myopathy (a muscular disease in which the muscle fibres do not function): 197 reports
Nasal congestion (blockage of the nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels): 270 reports
Nasopharyngitis (inflammation of the nasopharynx): 883 reports
Nausea (feeling of having an urge to vomit): 6,402 reports
Nausea and vomiting: 3,574 reports
Neck pain: 573 reports
Neoplasm malignant (cancer tumour): 301 reports
Neoplasm progression (growth of tumour): 233 reports
Neoplasm recurrence (reoccurrence of tumour): 153 reports
Nephrogenic systemic fibrosis (involves fibrosis of skin, joints, eyes due to kidney disease): 125 reports
Nervousness: 513 reports
Nervous system disorder (a general class of medical conditions affecting the nervous system): 157 reports
Neuralgia (pain in one or more nerves): 173 reports
Neuroleptic malignant syndrome (a life-threatening neurological disorder most often caused by an adverse reaction to neuroleptic or antipsychotic agents): 108 reports
Neuropathy peripheral (surface nerve damage): 691 reports
Neutrophil count decreased (less than normal number of neutrophil a type of blood cell): 205 reports
Nightmares (unpleasant dreams): 240 reports
Night sweats (sweating in night): 279 reports
Nosebleed (bleeding from nose): 656 reports
Ocular hyperaemia (an abnormally large amount of blood in eye): 135 reports
Oedema (fluid collection in tissue): 723 reports
Oedema lower limb (fluid collection in tissue of lower leg): 158 reports
Oedema peripheral (superficial swelling): 2,362 reports
Oesophagitis (inflammation of oesophagus): 183 reports
Oral candidiasis (fungal infection of mouth): 105 reports
Oral discomfort (pain or irritation in mouth): 110 reports
Oral pain: 295 reports
Oropharyngeal pain: 678 reports
Orthostatic hypotension (a medical condition consisting of a sudden decrease in blood pressure when a person stands up): 502 reports
Osteoarthritis (a joint disease caused by cartilage loss in a joint): 624 reports
Osteomyelitis (infection of bone): 230 reports
Osteonecrosis of jaw (death of bone of jaw): 354 reports
Osteopenia (a condition where bone mineral density is lower than normal): 225 reports
Osteoporosis (bones weak and more likely to break): 407 reports
Otitis (ear infection): 137 reports
Ovarian cysts (fluid filled sacs of the ovary): 109 reports
Overdose: 829 reports
Oxygen saturation decreased: 330 reports
Pain: 4,033 reports
Pain in extremity: 2,619 reports
Pain in jaw: 281 reports
Pain in limb: 144 reports
Pain of skin: 106 reports
Paleness (unusual lightness of skin colour): 322 reports
Palmar-plantar erythrodysaesthesia syndrome (hand-foot syndrome): 199 reports
Pancreatitis (inflammation of pancreas): 530 reports
Pancreatitis acute (sudden inflammation of pancreas): 246 reports
Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets): 552 reports
Panic disorder: 299 reports
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect): 1,428 reports
Paranoia (psychotic disorder characterized by delusions of persecution with or without grandeur): 136 reports
Parkinson's disease: 292 reports
Paroxysmal supraventricular tachycardia: 148 reports
Pathological fracture (broken bone caused by disease): 135 reports
Pelvic pain: 115 reports
Pericardial effusion (fluid around the heart): 277 reports
Pericarditis (inflammation of the pericardium): 102 reports
Peripheral coldness: 163 reports
Peripheral swelling: 628 reports
Peripheral vascular disorder: 126 reports
Peritonitis (inflammation of the peritoneum, the thin tissue that lines the inner wall of the abdomen and covers most of the abdominal organs): 141 reports
Pharyngeal oedema (abnormal accumulation of fluid in the cavities and intercellular spaces of the pharyngeal): 175 reports
Pharyngitis (inflammation of the pharynx, causing a sore throat): 156 reports
Pharyngolaryngeal pain: 130 reports
Photophobia (extreme sensitivity to light): 137 reports
Photosensitivity reaction: 126 reports
Pituitary tumor benign: 101 reports
Platelet count increased: 129 reports
Pleural effusion (water on the lungs): 959 reports
Pneumonia: 2,950 reports
Pneumonia aspiration (bronchopneumonia that develops due to the entrance of foreign materials into the bronchial tree): 207 reports
Pneumothorax (the presence of air or gas in the cavity between the lungs and the chest wall, causing collapse of the lung): 129 reports
Pollakiuria (abnormally frequent passage of relatively small quantities or urine): 399 reports
Polyneuropathy (neurological disorder that occurs when many peripheral nerves throughout the body malfunction simultaneously): 119 reports
Poor quality sleep: 207 reports
Post procedural complication: 174 reports
Premature baby: 171 reports
Presyncope: 233 reports
Productive cough: 368 reports
Progressive multifocal leukoencephalopathy (rapidly progressive neuromuscular disease caused by opportunistic infection of brain cells): 125 reports
Prostate cancer: 112 reports
Protein - urine: 158 reports
Pruritus generalised (generalized itching): 256 reports
Psoriasis (immune-mediated disease that affects the skin): 357 reports
Psychomotor hyperactivity (feelings of extreme restlessness): 128 reports
Psychotic disorder: 174 reports
Pulmonary congestion (congestion in the lungs): 178 reports
Pulmonary embolism (blockage of the main artery of the lung): 1,023 reports
Pulmonary hypertension (increase in blood pressure in the lung artery): 346 reports
Pulmonary mass: 113 reports
Pulmonary oedema (fluid accumulation in the lungs): 502 reports
Purpura (purplish discoloration of the skin): 151 reports
Quality of life decreased: 111 reports
Rales (an abnormal respiratory sound characterized by fine crackles): 131 reports
Rash erythematous (redness of the skin): 365 reports
Rashes (redness): 3,878 reports
Rash macular (small, flat red spots): 233 reports
Rash maculo-papular (red area on the skin that is covered with small confluent bumps): 233 reports
Rash papular (redness with papule): 166 reports
Rash pruritic (redness with itching): 467 reports
Reaction to drug excipients: 125 reports
Rectal haemorrhage (bleeding from anus): 534 reports
Red blood cell count decreased: 287 reports
Red blood cell sedimentation rate increased: 158 reports
Refractory anaemia (an anaemia which does not respond to treatment): 104 reports
Renal cyst (kidney cyst): 142 reports
Renal disorder (kidney disease): 393 reports
Renal failure acute (rapid kidney dysfunction): 1,599 reports
Renal failure chronic (long lasting kidney dysfunction): 360 reports
Renal impairment (severely reduced kidney function): 770 reports
Renal injury (kidney injury): 173 reports
Renal tubular necrosis (death of kidney tubules): 135 reports
Respiratory acidosis (respiratory failure or ventilatory failure, causes the ph of blood and other bodily fluids to decrease): 710 reports
Respiratory disorder (respiratory disease): 235 reports
Respiratory distress (difficulty in breathing): 243 reports
Respiratory rate increased (excess breathing rate/min): 101 reports
Respiratory tract infection: 167 reports
Restless leg syndrome (a powerful urge to move your legs): 214 reports
Retching (strong involuntary effort to vomit): 153 reports
Rhabdomyolysis (a condition in which damaged skeletal muscle tissue breaks down): 703 reports
Rheumatoid arthritis (a chronic progressive disease causing inflammation in the joints): 693 reports
Rhinitis (a medical term for irritation and inflammation of the mucous membrane inside the nose): 122 reports
Rib fracture: 238 reports
Rickets (softening of bones): 168 reports
Right ventricular failure (right half of the heart fails to work): 201 reports
Road traffic accident: 369 reports
Rotator cuff syndrome (a spectrum of conditions affecting the rotator cuff tendons of the shoulder): 152 reports
Scar: 161 reports
Sciatica (a set of symptoms including pain caused by general compression or irritation of one of five spinal nerve roots of each sciatic nerve): 222 reports
Scoliosis (a medical condition in which a person's spine is curved from side to side): 120 reports
Sedation: 469 reports
Seizures (abnormal excessive or synchronous neuronal activity in the brain): 258 reports
Sensory disturbance (sense disturbance): 132 reports
Sepsis (a severe blood infection that can lead to organ failure and death): 938 reports
Septic shock (shock due to blood infection): 348 reports
Serotonin syndrome (occurs when two drugs that affect the body's level of serotonin are taken together at the same time): 203 reports
Shock (a life-threatening condition with symptoms like low blood pressure, weakness, shallow breathing, cold, clammy skin): 207 reports
Sinus bradycardia (an unusually slow heartbeat due to heart disease): 161 reports
Sinus disorder (disease of sinus): 138 reports
Sinusitis (inflammation of sinus): 868 reports
Sinus tachycardia (a heart rhythm with elevated rate of impulses originating from the sinoatrial node): 191 reports
Skin blushing/flushing (a sudden reddening of the face, neck): 1,067 reports
Skin burning sensation: 203 reports
Skin - clammy: 146 reports
Skin discoloration: 326 reports
Skin discoloration - bluish (bluish colour of skin): 148 reports
Skin disorder (skin disease): 237 reports
Skin exfoliation (removal of the oldest dead skin cells): 358 reports
Skin ulcer: 319 reports
Sleep apnea syndrome: 316 reports
Sleep disorder: 571 reports
Small intestinal obstruction (blockage in small intestine): 144 reports
Sneezing: 123 reports
Speech disorder: 537 reports
Speech impairment (adult) (inability to speak (adult)): 722 reports
Spinal column stenosis (narrowing of spinal column): 159 reports
Spinal compression fracture (fracture due to spinal compression on bone): 116 reports
Spinal fracture (fracture in one of vertebrae): 211 reports
Spinal osteoarthritis (joint cartilage loss in spine): 238 reports
Splenomegaly (enlargement of spleen): 132 reports
Stable angina (a constant chest pain): 432 reports
Staphylococcal infection (an infection with staphylococcus bacteria): 316 reports
Stomatitis (inflammation of mucous membrane of mouth): 584 reports
Stress and anxiety: 2,684 reports
Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 1,048 reports
Subarachnoid haemorrhage (blood leaks into the space between two membranes that surround the brain): 127 reports
Subdural haematoma (blood collects between the skull and the surface of the brain): 144 reports
Suicidal ideation: 566 reports
Suicide attempt: 315 reports
Surgery: 240 reports
Swallowing difficulty: 1,040 reports
Sweating increased (excess sweating): 143 reports
Swelling: 652 reports
Swelling face: 509 reports
Swollen tongue (swelling of tongue): 384 reports
Systemic lupus erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue): 149 reports
Tachypnea: 121 reports
Tardive dyskinesia (a disorder that involves involuntary movements): 128 reports
Taste - impaired: 604 reports
Tenderness (pain or discomfort when an affected area is touched): 150 reports
Tendonitis (a condition that causes pain and swelling of tendons): 158 reports
The flu (the flu is caused by an influenza virus): 523 reports
Therapeutic agent toxicity (poisoning by ability to cure substance): 178 reports
Therapeutic response decreased (less preventive response): 190 reports
Therapeutic response unexpected: 255 reports
Thirst: 193 reports
Throat irritation: 275 reports
Throat tightness: 180 reports
Thrombocytopenia (decrease of platelets in blood): 2,040 reports
Thrombophlebitis (swelling (inflammation) of a vein caused by a blood clot): 134 reports
Thrombosis (formation of a blood clot inside a blood vessel): 548 reports
Thyroid cancer: 125 reports
Thyroid diseases: 585 reports
Tinnitus (a ringing in the ears): 381 reports
Tooth abscess (pus formation in tooth): 259 reports
Toothaches (tooth pain): 179 reports
Tooth disorder (tooth disease): 247 reports
Tooth extraction: 144 reports
Tooth fracture: 161 reports
Tooth loss: 136 reports
Torsade de pointes (a abnormal heart rate with abnormal beating pattern): 125 reports
Toxic skin eruption (skin breakdown due to toxic substance): 109 reports
Transaminases increased: 179 reports
Transient ischaemic attack (a transient episode of neurologic dysfunction caused by ischemia (loss of blood flow)): 469 reports
Tremor (trembling or shaking movements in one or more parts of your body): 1,638 reports
Tricuspid valve incompetence (inefficient heart valve): 182 reports
Tumor: 147 reports
Type 2 diabetes: 289 reports
Ulcerative colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 115 reports
Unresponsive to stimuli: 271 reports
Upper gastrointestinal haemorrhage (upper gastrointestinal bleeding): 182 reports
Upper limb fracture: 151 reports
Upper respiratory tract infection: 520 reports
Urinary incontinence (inability to control the flow of urine and involuntary urination): 399 reports
Urinary retention (the inability to completely or partially empty the bladder): 306 reports
Urinary tract infection: 2,340 reports
Urination - excessive at night: 122 reports
Urination - painful: 347 reports
Urine output - decreased: 113 reports
Urosepsis (secondary infection that occurs when a urinary tract infection spreads to the bloodstream): 114 reports
Urticaria (rash of round, red welts on the skin that itch intensely): 907 reports
Vaginal bleeding: 177 reports
Varicose vein (veins that have become enlarged and tortuous): 154 reports
Vasculitis (inflammation of a blood vessel or blood vessels): 150 reports
Ventricular extrasystoles (premature cardiac contraction): 193 reports
Ventricular fibrillation (abnormally irregular heart rhythm): 119 reports
Ventricular tachycardia (rapid heartbeat that originates in one of the lower chambers (the ventricles) of the heart): 255 reports
Viral infection: 289 reports
Vision blurred: 1,031 reports
Visual acuity reduced (reduced clearness of vision): 360 reports
Visual disturbance: 137 reports
Visual impairment: 624 reports
Weakness: 5,168 reports
Weight decreased: 2,706 reports
Weight increased: 1,997 reports
Weight loss: 232 reports
Wheezing (a high-pitched whistling sound made while you breath): 475 reports
White blood cell count decreased: 994 reports
White blood cell count increased: 450 reports
Withdrawal syndrome (a discontinuation syndrome is a set of symptoms occurred due to discontinuation of substance): 225 reports
Wound: 187 reports
Wrist fracture: 135 reports

All Levothyroxine sodium side effects from A to Z:

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