Pfizer BioNTech Covid Vaccine and Drowsiness - a phase IV clinical study of CDC and FDA data

Summary:

Drowsiness is found among people who get Pfizer BioNTech Covid Vaccine, especially for people who are female, 60+ old, and on the same day of getting the vaccine.

The phase IV clinical study analyzes which people get Pfizer BioNTech Covid Vaccine and have Drowsiness. It is created by eHealthMe based on reports of 401,887 people who have side effects when getting Pfizer BioNTech Covid Vaccine from the CDC and the FDA, and is updated regularly. You can use the study as a second opinion to make health care decisions.

Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI algorithms, eHealthMe is running millions of phase IV trials and makes the results available to the public. Our original studies have been referenced on 600+ medical publications including The Lancet, Mayo Clinic Proceedings, and Nature.

On May, 25, 2023

401,887 people reported to have side effects after getting Pfizer BioNTech Covid Vaccine.
Among them, 4,552 people (1.13%) have Drowsiness.

What is Drowsiness?

Drowsiness is found to be associated with 4,271 drugs and 4,565 conditions by eHealthMe.

Number of reports submitted per year:

Pfizer biontech covid vaccine and Drowsiness?

Time to have Drowsiness from when people get Pfizer BioNTech Covid Vaccine *:

on the same day: 47.73 %
in the first week: 39.22 %
in the first 30 days: 6.16 %
after 30 days: 6.88 %

Gender of people *:

female: 73.34 %
male: 26.66 %

Age of people *:

Did people recover *:

yes: 44.16 %
no: 55.84 %

Death as an outcome *:

yes: 0.94 %
no: 99.06 %

# of vaccine dose *:

1: 47.16 %
2: 40.85 %
3+: 11.99 %

Common side effects people have besides Drowsiness *:

Fatigue (feeling of tiredness): 2,492 people, 54.75%
Headache (pain in head): 1,506 people, 33.08%
Fever: 1,089 people, 23.92%
Pain: 1,041 people, 22.87%
Chills (felling of cold): 988 people, 21.70%
Dizziness: 872 people, 19.16%
Nausea (feeling of having an urge to vomit): 800 people, 17.57%
Weakness: 785 people, 17.25%
Pain In Extremity: 779 people, 17.11%
Feeling Abnormal: 579 people, 12.72%

* Approximation only. Some reports may have incomplete information.

Related studies

Other COVID vaccine studies:

Vaccine side effects by duration, gender, age and dose:

Common Pfizer biontech covid vaccine side effects:

Abdominal discomfort: 2,949 reports
Abdominal distension: 966 reports
Abdominal pain: 4,033 reports
Abdominal pain lower: 455 reports
Abdominal pain upper: 4,230 reports
Abnormal behavior: 198 reports
Abnormal dreams: 307 reports
Abortion spontaneous (naturally occurring miscarriage): 725 reports
Acne (skin problems that cause pimples): 240 reports
Acute kidney failure: 272 reports
Acute myocardial infarction (acute heart attack): 520 reports
Acute respiratory failure: 1,573 reports
Acute upper airway obstruction (blockage occurs in the upper airway): 126 reports
Adverse event: 302 reports
Adverse reaction: 295 reports
Ageusia (loss of taste functions of the tongue): 2,749 reports
Aggression: 106 reports
Agitation (state of anxiety or nervous excitement): 831 reports
Alanine aminotransferase increased: 515 reports
Allergies: 221 reports
Allergy to vaccine: 164 reports
Alopecia areata (patchy baldness that typically begins with rapid hair loss): 116 reports
Anaemia (lack of blood): 536 reports
Anaphylaxis (serious allergic reaction that is rapid in onset and may cause death): 1,379 reports
Anger: 131 reports
Angioedema (rapid swelling of the dermis): 468 reports
Anticoagulant therapy: 1,596 reports
Antinuclear antibody positive: 224 reports
Aphonia (inability to produce voice): 337 reports
Appendicitis (inflammation of the appendix): 506 reports
Appetite - decreased (decreased appetite occurs when you have a reduced desire to eat): 5,758 reports
Appetite - increased (increased appetite is when you want to eat much more often or in larger quantities than your body requires): 187 reports
Ards (acute respiratory distress syndrome) (sudden failure of the respiratory (breathing) system): 140 reports
Arrhythmias (irregular heartbeat): 4,183 reports
Arthritis (form of joint disorder that involves inflammation of one or more joints): 970 reports
Arthropathy: 217 reports
Aspartate aminotransferase increased: 564 reports
Asthenopia (eyestrain-tiredness of the eyes caused by prolonged close work by a person with an uncorrected vision problem): 223 reports
Asthma: 958 reports
Atelectasis (partial or complete collapse of the lung): 365 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): 1,863 reports
Autoimmune disorder (a condition in which the immune system attacks the body's normal substances and tissue): 300 reports
Autonomic nervous system imbalance (autonomic nervous system is of net equal emphasis): 107 reports
Axillary mass: 610 reports
Axillary pain: 3,589 reports
Back pain: 7,339 reports
Bacterial infection: 102 reports
Balance disorder: 2,258 reports
Basedow's disease (autoimmune disease where the thyroid is overactive, producing an excessive amount of thyroid hormones): 107 reports
Basophil count decreased: 122 reports
Basophil percentage decreased: 135 reports
Bedridden: 413 reports
Belching (release of gas from the digestive tract): 198 reports
Bell's palsy (facial paralysis): 1,940 reports
Birth control: 154 reports
Bleeding disorders: 103 reports
Bleeding into the skin: 421 reports
Blindness: 652 reports
Blindness transient (sudden loss of vision): 113 reports
Blindness unilateral: 188 reports
Blister (small pocket of fluid within the upper layers of the skin caused by forceful rubbing (friction), burning, freezing, chemical exposure): 1,279 reports
Blood albumin decreased: 210 reports
Blood alkaline phosphatase increased: 232 reports
Blood bilirubin increased: 212 reports
Blood calcium decreased: 229 reports
Blood chloride decreased: 130 reports
Blood chloride increased: 133 reports
Blood creatine phosphokinase increased: 301 reports
Blood creatinine increased: 783 reports
Blood culture positive: 120 reports
Blood gases: 251 reports
Blood glucose decreased: 343 reports
Blood glucose increased: 1,141 reports
Blood iron decreased: 116 reports
Blood lactate dehydrogenase increased: 158 reports
Blood lactic acid increased: 143 reports
Blood potassium decreased: 404 reports
Blood pressure fluctuation: 229 reports
Blood pressure management: 360 reports
Blood sodium decreased: 467 reports
Blood thyroid stimulating hormone decreased: 184 reports
Blood thyroid stimulating hormone increased: 137 reports
Blood urea increased: 420 reports
Blood urine present: 430 reports
Body temperature decreased: 274 reports
Body temperature fluctuation: 125 reports
Body temperature increased: 2,906 reports
Bone pain: 1,180 reports
Bowel movement irregularity: 146 reports
Bradycardia (abnormally slow heart action): 478 reports
Brain natriuretic peptide increased: 435 reports
Breast lump (localized swelling that feels different from the surrounding breast tissue): 293 reports
Breast pain: 1,469 reports
Breast swelling: 483 reports
Breathing difficulty: 24,470 reports
Breathing - slowed or stopped: 205 reports
Breathing sounds - abnormal (stridor): 119 reports
Breath sounds: 134 reports
Bronchitis (inflammation of the mucous membrane in the bronchial tubes): 383 reports
Bundle branch block right (absence of transmission of electric impulses from the atrioventricular (av) bundle of his to the right ventricle): 102 reports
Burning sensation: 3,889 reports
Bursitis (inflammation of a bursa, typically one in the knee, elbow, or shoulder): 217 reports
Canker sores (painful, open sore in the mouth): 213 reports
Carbon dioxide decreased: 162 reports
Cardiac arrest: 708 reports
Cardiac discomfort: 183 reports
Cardiac disorder: 752 reports
Cardiac failure: 311 reports
Cardiac failure acute: 121 reports
Cardiac failure congestive: 467 reports
Cardiac flutter (abnormal heart rhythm): 792 reports
Cardiac stress test normal: 187 reports
Cardiomyopathy (weakening of the heart muscle): 125 reports
Cardio-respiratory arrest (sudden dysfunction of heart and lungs): 207 reports
Cardioversion: 251 reports
Cellulitis (infection under the skin): 479 reports
Cerebral haemorrhage (bleeding within the brain): 226 reports
Cerebral infarction (less blood supply to brain resulting tissue damage): 176 reports
Cerebral thrombosis (blood clot in brain): 111 reports
Chapped lips (cracking, fissuring, and peeling of the skin f lip): 124 reports
Cheilitis (infection of lips): 161 reports
Chemotherapy: 135 reports
Chest pain: 21,379 reports
Chills (felling of cold): 39,238 reports
Chronic kidney disease: 210 reports
Chronic obstructive pulmonary disease (a progressive disease that makes it hard to breathe): 410 reports
Cognitive disorder (mental health disorders affects learning, memory, perception, and problem solving): 513 reports
Colitis (inflammation of colon): 179 reports
Colonoscopy: 425 reports
Computerised tomogram abdomen: 968 reports
Concussion (short loss of normal brain function in response to a head injury): 116 reports
Confusion: 1,209 reports
Confusional state: 3,059 reports
Conjunctivitis (pink eye): 211 reports
Constipation: 683 reports
Coronary arterial stent insertion: 136 reports
Coronary artery occlusion (complete obstruction of blood flow in a coronary artery): 106 reports
Coronary heart disease (narrowing or blockage of the coronary arteries): 132 reports
Costochondritis (chest wall pain): 174 reports
Cough: 15,017 reports
Coughing up blood: 270 reports
C-reactive protein increased: 1,439 reports
Crohn's disease (condition that causes inflammation of the gastrointestinal tract): 173 reports
Crying: 563 reports
Csf collection: 458 reports
Culture urine positive: 105 reports
Cyst (a closed sac): 135 reports
Deafness neurosensory: 183 reports
Deafness unilateral: 673 reports
Death: 5,183 reports
Decreased activity: 106 reports
Deep venous thrombosis (blood clot in a major vein that usually develops in the legs and/or pelvis): 1,128 reports
Dehydration (dryness resulting from the removal of water): 1,455 reports
Delirium (wild excitement): 229 reports
Delivery: 197 reports
Dementia (madness): 152 reports
Depressed level of consciousness: 196 reports
Depressed mood: 316 reports
Depression: 720 reports
Dermatitis (inflammation of the skin resulting from direct irritation by an external agent or an allergic reaction to it): 251 reports
Dermatitis contact (skin reaction (dermatitis) resulting from exposure to allergens): 127 reports
Diabetes: 219 reports
Diabetic ketoacidosis (diabetic ketoacidosis (dka) is high concentrations of ketone bodies): 134 reports
Diarrhea: 12,874 reports
Diplopia (double vision): 532 reports
Discomfort: 2,453 reports
Disease recurrence: 297 reports
Disturbance in attention: 1,301 reports
Diverticulitis (digestive disease which involves the formation of pouches (diverticula) within the bowel wall): 169 reports
Dizziness: 41,726 reports
Dizziness postural: 402 reports
Drooling (drop saliva uncontrollably from the mouth): 129 reports
Drowsiness: 4,552 reports
Drug hypersensitivity: 219 reports
Drug ineffective: 7,432 reports
Dry eyes (lack of adequate tears): 382 reports
Dry mouth: 1,156 reports
Dry skin: 548 reports
Dry throat: 551 reports
Dyskinesia (abnormality or impairment of voluntary movement): 751 reports
Dysphemia (stammering or stuttering): 113 reports
Dyspnea exertional: 993 reports
Dysstasia (difficulty in standing): 1,422 reports
Ear congestion: 180 reports
Ear discomfort: 1,592 reports
Ear disorder: 133 reports
Ear pain: 2,197 reports
Ear pruritus (pruritus or itching is ""the unpleasant skin sensation that frequently provokes scratching"" in ear): 148 reports
Eating disorder: 293 reports
Eczema (patches of skin become rough and inflamed, with itching and bleeding blisters): 377 reports
Ejection fraction (the percentage of blood that is pumped out of a filled ventricle as a result of a heartbeat): 215 reports
Ejection fraction decreased (systolic heart failure): 365 reports
Electrocardiogram st segment elevation: 470 reports
Emotional disorder: 157 reports
Emotional distress: 224 reports
Encephalopathy (functioning of the brain is affected by some agent or condition): 223 reports
Energy increased: 120 reports
Enlarged heart: 391 reports
Eosinophil count decreased: 121 reports
Eosinophil percentage decreased: 143 reports
Erection problems: 101 reports
Euphoric mood (excessively happy but may become angry or irritable): 148 reports
Exercise tolerance decreased: 339 reports
Extrasystoles: 340 reports
Eye discharge: 142 reports
Eye disorder: 387 reports
Eye haemorrhage (bleeding in the eye): 190 reports
Eye inflammation: 116 reports
Eye irritation: 622 reports
Eyelid ptosis (falling of the upper or lower eyelid): 160 reports
Eyelid twitch (spontaneous and uncontrolled spasms of the muscles): 375 reports
Eye movement disorder: 568 reports
Eye movements - uncontrollable: 110 reports
Eye pain: 1,713 reports
Eye pruritus (eye itching): 799 reports
Eye swelling: 1,742 reports
Face injury: 160 reports
Facial pain: 781 reports
Facial paralysis (loss of function of face muscle): 1,472 reports
Facial paresis (weakness in facial muscle movement): 258 reports
Faeces discolored: 197 reports
Fainting (loss of consciousness and postural tone): 8,693 reports
Fall: 4,242 reports
Fatigue (feeling of tiredness): 55,891 reports
Fear: 489 reports
Feeding disorder (when children refuse to eat certain food groups): 666 reports
Feeling cold: 3,143 reports
Feeling drunk: 196 reports
Feeling hot: 5,968 reports
Feeling jittery: 372 reports
Feeling of body temperature change: 670 reports
Fever: 47,990 reports
Fibrin d dimer increased: 1,007 reports
Fibrin d dimer normal: 322 reports
Fibromyalgia (a long-term condition which causes pain all over the body): 240 reports
Flank pain (a distressing sensation experienced around the lower back and the upper abdomen): 350 reports
Flatulence (flatus expelled through the anus): 491 reports
Fluid intake reduced: 112 reports
Fluid retention (an abnormal accumulation of fluid in the blood): 217 reports
Food allergy: 130 reports
Formication (a sensation that exactly resembles that of small insects crawling on (or under) the skin): 199 reports
Fungal infection: 132 reports
Gait disturbance: 4,143 reports
Gastric disorder (disease of stomach): 129 reports
Gastric ulcer (stomach ulcer): 102 reports
Gastritis (inflammation of stomach): 142 reports
Gastroesophageal reflux disease (a condition in which stomach contents leak backward from the stomach into the oesophagus): 522 reports
Gastrointestinal disorder (functional problems of gastrointestinal tract): 470 reports
Gastrointestinal haemorrhage (bleeding gastrointestinal tract): 223 reports
Gastrointestinal pain: 217 reports
Gaze palsy (disorders affecting the ability to move both eyes in the same direction): 135 reports
General physical health deterioration (weak health status): 605 reports
Gingival bleeding (bleeding gums): 139 reports
Gingival pain (gum pain): 177 reports
Glomerular filtration rate decreased: 235 reports
Glossodynia (a burning or painful sensation in the tongue): 326 reports
Glycosylated haemoglobin: 302 reports
Gout (uric acid crystals building up in the body): 278 reports
Grip strength decreased: 316 reports
Groin pain: 298 reports
Guillain-barre syndrome (the body's immune system attacks its peripheral nervous system): 425 reports
Gums - swollen: 145 reports
Haematemesis (vomiting of blood): 139 reports
Haematochezia (passage of stools containing blood): 351 reports
Haematocrit: 103 reports
Haematocrit decreased: 404 reports
Haematoma (collection of blood outside the blood vessels): 138 reports
Haematuria (presence of blood in urine): 269 reports
Haemoglobin decreased: 933 reports
Haemorrhage (bleeding): 630 reports
Hair loss: 973 reports
Hallucinations (sensations that appear real but are created by your mind): 414 reports
Headache (pain in head): 60,922 reports
Head discomfort: 1,801 reports
Head injury: 3,025 reports
Hearing loss: 952 reports
Heart attack: 892 reports
Heart palpitations (feelings or sensations that your heart is pounding or racing): 8,642 reports
Heart rate decreased: 663 reports
Heart rate increased: 7,978 reports
Heart rate irregular: 1,445 reports
Hemiparesis (weakness on one side of the body): 484 reports
Hemiplegia (paralysis of one side of the body): 145 reports
Hepatic enzyme increased: 272 reports
Herpes simplex (herpes simplex is a common viral infection): 165 reports
Herpes virus infection: 136 reports
Herpes zoster: 4,216 reports
High blood cholesterol: 470 reports
High blood pressure: 7,451 reports
Hiv infection: 124 reports
Hoarseness or changing voice: 1,134 reports
Hot flush (sudden feelings of heat): 1,985 reports
Hyperacusis (disorder in loudness perception): 429 reports
Hyperaesthesia: 333 reports
Hyperglycemia (high blood sugar): 205 reports
Hyperhidrosis (abnormally increased sweating): 11,159 reports
Hyperkalemia (damage to or disease of the kidney): 239 reports
Hypersensitivity: 2,558 reports
Hyperthyroidism (over activity of the thyroid gland): 136 reports
Hyperventilation: 450 reports
Hypervolaemia (abnormally increased volume of blood): 107 reports
Hypoacusis (loss of hearing): 921 reports
Hypoaesthesia (reduced sense of touch or sensation): 12,826 reports
Hypoaesthesia oral (reduced sense of touch or sensation in mouth): 2,774 reports
Hypoglycemia (low blood sugar): 180 reports
Hypokalemia (low potassium): 193 reports
Hypokinesia (decreased bodily movement): 298 reports
Hyponatremia (abnormally low level of sodium in the blood; associated with dehydration): 318 reports
Hypophagia (reduced food intake): 552 reports
Hypopnea: 283 reports
Hyporesponsive to stimuli (abnormally low degree of responsiveness on an agent, action, or condition): 104 reports
Hypotension (abnormally low blood pressure): 3,181 reports
Hypothyroidism (abnormally low activity of the thyroid gland, resulting in retardation of growth and mental development): 145 reports
Hypotonia (low muscle tone): 191 reports
Idiopathic pulmonary fibrosis (chronic lung disease): 109 reports
Immediate post-injection reaction: 2,977 reports
Immune system disorder: 234 reports
Immunisation reaction: 158 reports
Immunodeficiency: 510 reports
Impaired driving ability: 655 reports
Impaired work ability: 3,171 reports
Incoherent (talking in a confused and unclear way): 140 reports
Incontinence (lack of moderation or self-control): 139 reports
Indigestion: 1,000 reports
Infection: 621 reports
Inflammation: 2,223 reports
Inflammatory marker increased: 227 reports
Influenza like illness: 4,031 reports
Injected limb mobility decreased: 789 reports
Injection site bruising: 791 reports
Injection site discoloration: 144 reports
Injection site discomfort: 207 reports
Injection site erythema (redness at injection site): 4,409 reports
Injection site haemorrhage (bleeding from injection site): 207 reports
Injection site induration: 663 reports
Injection site inflammation: 165 reports
Injection site mass: 589 reports
Injection site nodule (small swelling or aggregation of cells in the body, esp. an abnormal one at injection site): 248 reports
Injection site pain: 13,598 reports
Injection site paraesthesia (abnormal skin sensations at injection site): 313 reports
Injection site pruritus (severe itching at injection site): 2,342 reports
Injection site rash: 1,284 reports
Injection site reaction: 839 reports
Injection site swelling: 4,443 reports
Injection site urticaria (rash of round, red welts on the skin at injection site): 275 reports
Injection site vesicles (fluid- or air-filled cavity or sac at injection site): 118 reports
Injection site warmth: 1,857 reports
Injury: 162 reports
Insomnia (sleeplessness): 4,384 reports
International normalised ratio increased: 205 reports
Interstitial lung disease: 107 reports
Irritability: 441 reports
Irritable bowel syndrome: 127 reports
Ischaemic stroke (stroke; caused by an interruption in the flow of blood to the brain): 213 reports
Itching: 14,784 reports
Joint injury: 202 reports
Joint pain: 21,862 reports
Joint range of motion decreased (disease of joint movement): 984 reports
Joint stiffness: 766 reports
Joint swelling: 1,982 reports
Kidney stones: 187 reports
Lacrimation increased: 697 reports
Lactic acidosis (low ph in body tissues): 117 reports
Laryngitis (inflammation of the larynx): 109 reports
Left ventricular dysfunction: 141 reports
Leukocytosis (increased white blood cells): 287 reports
Limb discomfort (discomfort in leg): 2,460 reports
Limb injury: 373 reports
Lip blister: 146 reports
Lip dry: 101 reports
Lip pain: 151 reports
Lip pruritus (lip itching): 214 reports
Lip swelling: 2,916 reports
Loss of consciousness: 5,783 reports
Lung consolidation (a condition whereby the lung tissues solidify because of the accumulation of solid and liquid material in the air spaces): 174 reports
Lung disorder (lung disease): 400 reports
Lung infiltration (a substance that normally includes fluid, inflammatory exudates or cells that fill a region of lung): 566 reports
Lymphadenitis (inflammation or enlargement of a lymph node): 271 reports
Lymph follicular hypertrophy (an increase in the size of the lymph node follicles): 13,788 reports
Lymph node pain: 3,157 reports
Lymphocyte count decreased: 182 reports
Lymphocyte percentage decreased: 221 reports
Lymphoedema (localized fluid retention and tissue swelling): 201 reports
Malaise (a feeling of general discomfort or uneasiness): 12,894 reports
Mastication disorder (disease of chewing food): 113 reports
Maternal exposure before pregnancy (use of substance before pregnancy): 121 reports
Maternal exposure during pregnancy (use of substance during pregnancy): 286 reports
Memory loss: 1,762 reports
Menstrual disorder (disease of menstrual cycle): 1,777 reports
Menstruation delayed (late menstruation cycle): 754 reports
Menstruation irregular: 2,280 reports
Mental disorder (a psychological term for a mental or behavioural pattern or anomaly that causes distress or disability): 153 reports
Mental impairment (a condition affecting the body, perhaps through sight or hearing loss, a mobility difficulty or a health condition): 385 reports
Mental status changes (general changes in brain function, such as confusion, amnesia (memory loss), loss of alertness, loss of orientation): 858 reports
Metabolic encephalopathy (disorder or disease of the brain due to the body's disability to use energy): 128 reports
Micturition urgency (urgency to pass the urine): 138 reports
Middle ear effusion (fluid in middle ear): 125 reports
Migraine (headache): 4,849 reports
Migraine with aura (headache with vision weakness): 118 reports
Mitral valve incompetence (inefficient heart valve): 131 reports
Mobility decreased (ability to move is reduced): 4,438 reports
Monocyte count increased: 123 reports
Monocyte percentage increased: 142 reports
Monoplegia (a paralysis of a single limb): 157 reports
Mood swings (an extreme or rapid change in mood): 258 reports
Motion sickness (travel sickness): 134 reports
Mouth ulcers: 206 reports
Movement disorder (neurological syndromes where they may be excess of movement or a paucity of movement that is not connected to weakness): 1,020 reports
Movement - uncoordinated: 149 reports
Multiple sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath): 136 reports
Muscle aches (muscle pain): 18,821 reports
Muscle contractions involuntary (uncontrolled muscle contraction): 173 reports
Muscle disorder (muscle disease): 149 reports
Muscle function loss: 339 reports
Muscle rigidity (muscle stiffness): 155 reports
Muscle spasms (muscle contraction): 4,326 reports
Muscle strain (an injury to a muscle in which the muscle fibres tear): 184 reports
Muscle swelling: 102 reports
Muscle tightness: 1,186 reports
Muscle twitching: 1,466 reports
Musculoskeletal chest pain (pain in chest muscle or nerve or bones): 791 reports
Musculoskeletal discomfort (discomfort in the body's muscles, joints, tendons, ligaments and nerves): 696 reports
Musculoskeletal disorder (disease of the body's muscles, joints, tendons, ligaments and nerves): 154 reports
Musculoskeletal pain (pain affects the bones, muscles, ligaments, tendons, and nerves): 416 reports
Musculoskeletal stiffness (stiffness of the body's muscles, joints, tendons, ligaments and nerves): 3,474 reports
Mydriasis (a dilation of the pupil): 249 reports
Myelitis transverse (a neurological condition consisting of an inflammatory process of the spinal cord): 133 reports
Myocarditis (inflammation of heart muscle myocardium): 1,831 reports
Myositis (inflammation of the muscles): 115 reports
Nasal congestion (blockage of the nasal passages usually due to membranes lining the nose becoming swollen from inflamed blood vessels): 3,617 reports
Nasal discomfort: 197 reports
Nasopharyngitis (inflammation of the nasopharynx): 2,468 reports
Nausea (feeling of having an urge to vomit): 34,990 reports
Nausea and vomiting: 14,967 reports
Neck mass (mass in neck): 169 reports
Neck pain: 5,790 reports
Neoplasm malignant (cancer tumour): 102 reports
Nerve compression: 161 reports
Nerve injury: 229 reports
Nervousness: 1,361 reports
Nervous system disorder (a general class of medical conditions affecting the nervous system): 270 reports
Neuralgia (pain in one or more nerves): 1,452 reports
Neurological symptom (symptoms of nervous system disease): 418 reports
Neuropathy peripheral (surface nerve damage): 815 reports
Neutrophil count decreased (less than normal number of neutrophil a type of blood cell): 128 reports
Neutrophil count increased (excess than normal number of neutrophil a type of blood cell): 185 reports
Neutrophil percentage increased: 219 reports
Nightmares (unpleasant dreams): 253 reports
Night sweats (sweating in night): 1,364 reports
Nodule (a small rock or mineral cluster): 555 reports
Nosebleed (bleeding from nose): 1,376 reports
N-terminal prohormone brain natriuretic peptide increased: 121 reports
Numbness and tingling (unusual prickling sensations): 338 reports
Ocular discomfort (a generic expression when there is lack of ease in/about the eyes): 486 reports
Ocular hyperaemia (an abnormally large amount of blood in eye): 870 reports
Oedema (fluid collection in tissue): 315 reports
Oedema peripheral (superficial swelling): 1,192 reports
Oligomenorrhea: 396 reports
Oral discomfort (pain or irritation in mouth): 446 reports
Oral disorder (mouth disease): 122 reports
Oral herpes (viral infection of mouth): 690 reports
Oral mucosal blistering (mouth ulcer): 196 reports
Oral pain: 376 reports
Oral pruritus (itching in mouth): 311 reports
Oropharyngeal discomfort (pain or irritation of oropharynx): 867 reports
Oropharyngeal pain: 8,178 reports
Orthostatic hypotension (a medical condition consisting of a sudden decrease in blood pressure when a person stands up): 128 reports
Osteoarthritis (a joint disease caused by cartilage loss in a joint): 150 reports
Otitis (ear infection): 302 reports
Overdose: 328 reports
Oxygen saturation decreased: 1,255 reports
Pain: 44,982 reports
Painful respiration: 557 reports
Pain in extremity: 33,163 reports
Pain in jaw: 1,214 reports
Pain of skin: 778 reports
Paleness (unusual lightness of skin colour): 3,573 reports
Pancreatitis (inflammation of pancreas): 119 reports
Pancytopenia (medical condition in which there is a reduction in the number of red and white blood cells, as well as platelets): 103 reports
Panic disorder: 815 reports
Panic reaction: 177 reports
Paraesthesia (sensation of tingling, tickling, prickling, pricking, or burning of a person's skin with no apparent long-term physical effect): 13,632 reports
Paraesthesia oral (sensation of tingling, tickling, prickling, pricking, or burning of a person's oral with no apparent long-term physical effect): 3,794 reports
Paranasal sinus discomfort: 545 reports
Parosmia (distortion of the sense of smell, as in smelling odours that are not present): 863 reports
Paroxysmal supraventricular tachycardia: 299 reports
Pelvic pain: 261 reports
Periarthritis (inflammation of the external coats of an artery and of the tissues around the artery): 203 reports
Pericardial effusion (fluid around the heart): 441 reports
Pericarditis (inflammation of the pericardium): 1,131 reports
Peripheral coldness: 944 reports
Peripheral swelling: 7,209 reports
Pharyngeal erythema (pharyngeal redness): 119 reports
Pharyngeal hypoaesthesia (pharyngeal -abnormally decreased sensitivity): 286 reports
Photophobia (extreme sensitivity to light): 1,048 reports
Photopsia (presence of perceived flashes of light): 249 reports
Photosensitivity reaction: 148 reports
Pityriasis rosea (itchy rash develops over the trunk and extremities): 159 reports
Platelet count increased: 177 reports
Pleural effusion (water on the lungs): 568 reports
Pleurisy (inflammation of the pleurae, which causes pain when breathing): 140 reports
Pleuritic pain: 205 reports
Pneumonia: 2,007 reports
Pneumonia aspiration (bronchopneumonia that develops due to the entrance of foreign materials into the bronchial tree): 106 reports
Pneumonia bacterial (pneumonia associated with bacterial infection): 175 reports
Pneumonia viral: 101 reports
Pneumothorax (the presence of air or gas in the cavity between the lungs and the chest wall, causing collapse of the lung): 142 reports
Pollakiuria (abnormally frequent passage of relatively small quantities or urine): 458 reports
Polymenorrhea: 476 reports
Polymyalgia rheumatica (pain in many muscles): 160 reports
Poor quality sleep: 326 reports
Postmenopausal haemorrhage (post-menopausal bleeding): 345 reports
Postural orthostatic tachycardia syndrome (abnormal increase in heart rate on becoming upright): 179 reports
Premenstrual syndrome: 105 reports
Presyncope: 2,017 reports
Procalcitonin increased: 136 reports
Productive cough: 1,256 reports
Protein urine present: 118 reports
Psoriasis (immune-mediated disease that affects the skin): 339 reports
Pulmonary congestion (congestion in the lungs): 311 reports
Pulmonary embolism (blockage of the main artery of the lung): 1,610 reports
Pulmonary mass: 233 reports
Pulmonary oedema (fluid accumulation in the lungs): 331 reports
Pulmonary thrombosis (scarring in the lungs): 362 reports
Pulse absent: 185 reports
Purpura (purplish discoloration of the skin): 123 reports
Rash erythematous (redness of the skin): 3,192 reports
Rashes (redness): 24,509 reports
Rash macular (small, flat red spots): 1,638 reports
Rash maculo-papular (red area on the skin that is covered with small confluent bumps): 161 reports
Rash papular (redness with papule): 1,149 reports
Rash pruritic (redness with itching): 3,344 reports
Rash vesicular (rash with a small bubble): 409 reports
Raynaud's phenomenon (discoloration of the fingers, toes, and occasionally other areas): 110 reports
Rectal haemorrhage (bleeding from anus): 177 reports
Red blood cell count decreased: 323 reports
Red blood cell sedimentation rate increased: 642 reports
Red cell distribution width increased: 131 reports
Renal disorder (kidney disease): 127 reports
Renal impairment (severely reduced kidney function): 243 reports
Renal pain (kidney pain): 348 reports
Respiratory acidosis (respiratory failure or ventilatory failure, causes the ph of blood and other bodily fluids to decrease): 594 reports
Respiratory disorder (respiratory disease): 299 reports
Respiratory distress (difficulty in breathing): 403 reports
Respiratory rate increased (excess breathing rate/min): 250 reports
Respiratory syncytial virus test negative: 399 reports
Respiratory tract congestion (blockage on respiratory system): 3,113 reports
Restless leg syndrome (a powerful urge to move your legs): 154 reports
Retching (strong involuntary effort to vomit): 793 reports
Retinal vessel occlusion (a blockage in one of the small arteries): 126 reports
Rhabdomyolysis (a condition in which damaged skeletal muscle tissue breaks down): 135 reports
Rheumatoid arthritis (a chronic progressive disease causing inflammation in the joints): 607 reports
Rheumatoid factor: 217 reports
Rheumatoid factor negative: 169 reports
Road traffic accident: 129 reports
Rotator cuff syndrome (a spectrum of conditions affecting the rotator cuff tendons of the shoulder): 103 reports
Salivary hypersecretion (excess saliva secretion): 143 reports
Scab (a hard coating on the skin formed during the wound healing): 225 reports
Scar: 146 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): 263 reports
Scleroma (a hardened patch of tissue in the skin or mucous membranes): 398 reports
Scratch: 148 reports
Screaming (a long loud piercing cry): 101 reports
Seasonal allergy (allergic condition due to certain season): 119 reports
Secretion discharge: 305 reports
Seizure like phenomena (a variety of medical conditions may produce sudden episodes which have some similarities to epileptic seizures): 307 reports
Seizures (abnormal excessive or synchronous neuronal activity in the brain): 2,700 reports
Sensation of foreign body: 644 reports
Sensory disturbance (sense disturbance): 618 reports
Sepsis (a severe blood infection that can lead to organ failure and death): 761 reports
Septic shock (shock due to blood infection): 174 reports
Serum ferritin increased: 190 reports
Shock (a life-threatening condition with symptoms like low blood pressure, weakness, shallow breathing, cold, clammy skin): 178 reports
Sinus bradycardia (an unusually slow heartbeat due to heart disease): 110 reports
Sinus congestion (blockage of sinus): 732 reports
Sinus disorder (disease of sinus): 401 reports
Sinus headache (headache caused by sinus infections): 204 reports
Sinusitis (inflammation of sinus): 786 reports
Sinus pain: 277 reports
Sinus rhythm (normal beating of the heart): 137 reports
Sinus tachycardia (a heart rhythm with elevated rate of impulses originating from the sinoatrial node): 383 reports
Skin blushing/flushing (a sudden reddening of the face, neck): 5,166 reports
Skin burning sensation: 723 reports
Skin - clammy: 2,189 reports
Skin discoloration: 1,225 reports
Skin discoloration - bluish (bluish colour of skin): 351 reports
Skin disorder (skin disease): 339 reports
Skin exfoliation (removal of the oldest dead skin cells): 574 reports
Skin irritation: 284 reports
Skin mass: 135 reports
Skin reaction: 190 reports
Skin swelling: 215 reports
Skin tightness: 236 reports
Skin warm: 2,172 reports
Sleep disorder: 3,917 reports
Sluggishness (lacking alertness): 363 reports
Smell - impaired: 2,348 reports
Sneezing: 1,332 reports
Speech disorder: 1,050 reports
Speech impairment (adult) (inability to speak (adult)): 1,726 reports
Spinal pain (pain in spine): 372 reports
Sputum discolored: 193 reports
Stable angina (a constant chest pain): 761 reports
Staphylococcal infection (an infection with staphylococcus bacteria): 101 reports
Staring (a prolonged gaze or fixed look): 112 reports
Stent: 135 reports
Stomatitis (inflammation of mucous membrane of mouth): 449 reports
Stress and anxiety: 5,301 reports
Stroke (sudden death of a portion of the brain cells due to a lack of oxygen): 1,695 reports
Sudden hearing loss: 206 reports
Suicidal ideation: 213 reports
Supraventricular extrasystoles (premature electrical impulse in the heart, generated above the level of the ventricle): 154 reports
Surgery: 263 reports
Swallowing difficulty: 2,930 reports
Swallowing pain or burning: 217 reports
Swelling: 5,352 reports
Swelling face: 4,145 reports
Swollen tongue (swelling of tongue): 2,572 reports
Systemic inflammatory response syndrome (an inflammatory state affecting the whole body, frequently a response of the immune system to infection): 119 reports
Systemic lupus erythematosus (an autoimmune disease, which means the body's immune system mistakenly, attacks healthy tissue): 168 reports
Tachypnea: 388 reports
Taste - impaired: 2,682 reports
Tenderness (pain or discomfort when an affected area is touched): 2,064 reports
Tendonitis (a condition that causes pain and swelling of tendons): 180 reports
Tension headache: 222 reports
Testicular pain (pain in testes): 143 reports
The flu (the flu is caused by an influenza virus): 753 reports
Therapeutic response unexpected: 531 reports
Thirst: 718 reports
Throat irritation: 3,857 reports
Throat tightness: 3,936 reports
Thrombocytopenia (decrease of platelets in blood): 1,190 reports
Thrombosis (formation of a blood clot inside a blood vessel): 2,064 reports
Thyroid diseases: 165 reports
Tic (a sudden, repetitive, nonrhythmic motor movement or vocalization involving discrete muscle groups): 123 reports
Tinnitus (a ringing in the ears): 8,460 reports
Tongue disorder (disease of tongue): 306 reports
Tongue pruritus (itching on tongue): 313 reports
Tonsillar hypertrophy (enlargement of the tonsils): 138 reports
Toothaches (tooth pain): 537 reports
Transaminases increased: 113 reports
Transient ischaemic attack (a transient episode of neurologic dysfunction caused by ischemia (loss of blood flow)): 380 reports
Tremor (trembling or shaking movements in one or more parts of your body): 6,736 reports
Tricuspid valve incompetence (inefficient heart valve): 101 reports
Trigeminal neuralgia (a painful condition of the nerve responsible for most facial sensation): 140 reports
Trismus (reduced opening of the jaws): 126 reports
Troponin i increased: 284 reports
Troponin increased: 1,752 reports
Tumor: 636 reports
Tunnel vision (the loss of peripheral vision with retention of central vision): 267 reports
Type 2 diabetes: 116 reports
Ulcerative colitis (inflammatory bowel disease (ibd). it causes swelling, ulcerations, and loss of function of the large intestine): 147 reports
Unresponsive to stimuli: 2,785 reports
Upper-airway cough syndrome: 402 reports
Upper respiratory tract congestion: 128 reports
Upper respiratory tract infection: 243 reports
Urinary incontinence (inability to control the flow of urine and involuntary urination): 451 reports
Urinary retention (the inability to completely or partially empty the bladder): 157 reports
Urinary tract infection: 1,167 reports
Urination - excessive volume: 164 reports
Urination - painful: 376 reports
Urticaria (rash of round, red welts on the skin that itch intensely): 10,741 reports
Uveitis (inflammation of the uvea): 150 reports
Vaccination site erythema (redness around vaccination site): 1,591 reports
Vaccination site induration: 121 reports
Vaccination site pain: 7,836 reports
Vaccination site pruritus (severe itching of the skin at vaccination site): 830 reports
Vaccination site rash: 562 reports
Vaccination site reaction: 265 reports
Vaccination site swelling: 1,779 reports
Vaginal bleeding: 997 reports
Vaginal bleeding between periods: 917 reports
Vaginal discharge: 103 reports
Vasculitis (inflammation of a blood vessel or blood vessels): 110 reports
Ventricular extrasystoles (premature cardiac contraction): 572 reports
Ventricular tachycardia (rapid heartbeat that originates in one of the lower chambers (the ventricles) of the heart): 171 reports
Vertigo positional: 176 reports
Viral infection: 188 reports
Vision blurred: 3,821 reports
Visual field defect: 132 reports
Visual impairment: 2,405 reports
Vitamin d decreased: 115 reports
Vitreous floaters (spots before the eyes): 350 reports
Weakness: 18,723 reports
Weight bearing difficulty (difficulty due to weight of thigh fat deposition): 108 reports
Weight decreased: 1,256 reports
Weight increased: 356 reports
Weight loss: 1,104 reports
Wheezing (a high-pitched whistling sound made while you breath): 1,780 reports
White blood cell count decreased: 465 reports
White blood cell count increased: 1,230 reports
Wound: 119 reports

Browse all side effects of Pfizer BioNTech Covid Vaccine:

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The study is based on data from the CDC and the FDA.

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