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Review: Tizanidine hydrochloride side effects

In this review, we analyze Tizanidine hydrochloride side effects by the time on the drug, gender and age (0-60+) of the people who have side effects while taking Tizanidine hydrochloride. The review is based on 1,191 people who have side effects while taking Tizanidine hydrochloride from FDA and social media, and is updated regularly.

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What is Tizanidine hydrochloride

Tizanidine hydrochloride (latest outcomes from 1,532 users) has active ingredients of tizanidine hydrochloride. It is often used in muscle spasms.

Other drugs that have the same active ingredients (tizanidine hydrochloride): Zanaflex.

On Dec, 1, 2014: 1,191 people who reported to have side effects when taking Tizanidine hydrochloride are studied


Most common side effects over time * :

< 1 month1 - 6 months6 - 12 months1 - 2 years2 - 5 years5 - 10 years10+ yearsnot specified
Hypotension (abnormally low blood pressure)Aspartate Aminotransferase IncreasedHallucination, Visual (seeing things that aren't there)High Blood PressureHypokalaemia (low potassium)Convulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)Dysaesthesia (abnormal sensation)Fatigue (feeling of tiredness)
Nausea (feeling of having an urge to vomit)Alanine Aminotransferase IncreasedBlood Creatine Phosphokinase IncreasedHot Flushes (sudden feelings of heat)Hypomagnesaemia (electrolyte disturbance in which there is an abnormally low level of magnesium in the blood)VomitingParotitis (inflammation of a parotid gland)Pain
DizzinessDiffuse Large B-cell Lymphoma (cancer of b cells, a type of white blood cell)Aspartate Aminotransferase IncreasedRigors (an episode of shaking or exaggerated shivering)Neutropenia (an abnormally low number of neutrophils)Hyponatraemia (abnormally low level of sodium in the blood; associated with dehydration)Low Blood Pressure (abnormally low blood pressure)Pyrexia (fever)
Suicide AttemptHypertonia (abnormal increase in muscle tension and a reduced ability of a muscle to stretch)Intentional OverdoseBasilar Migraine (migraine with neurological symptoms related to the brain stem or with neurological symptoms on both sides of the body)Fungal Sepsis (whole body infection by fungus)Gastric Ulcer (stomach ulcer)Erectile DysfunctionVomiting
PneumoniaHepatic Function AbnormalHearing LossConstipation AggravatedConvulsion (muscles contract and relax rapidly and repeatedly, resulting in an uncontrolled shaking of the body)Loss Of ConsciousnessSwollen Tongue (swelling of tongue)Nausea (feeling of having an urge to vomit)
Tachycardia (a heart rate that exceeds the range of 100 beats/min)Blood Lactate Dehydrogenase IncreasedPain - Head (pain in head)Back InjuryAnaemia (lack of blood)Hypoaesthesia (reduced sense of touch or sensation)Diarrhoea
Pyrexia (fever)Anorexia (eating disorder characterized by immoderate food restriction and irrational fear of gaining weight)Stiffness In A Joint (difficulty in moving neck)Personality ChangeCondition AggravatedMuscular Weakness (muscle weakness)Abdominal Pain
Aspartate Aminotransferase IncreasedSomnolence (a state of near-sleep, a strong desire for sleep)Headache (pain in head)Hair LossPericardial Effusion (fluid around the heart)Disturbance In AttentionHeadache (pain in head)
Alanine Aminotransferase IncreasedNausea (feeling of having an urge to vomit)Low Platelet Count (decrease of platelets in blood)Personality Change Due To A General Medical ConditionNeutropenic Sepsis (whole body infection is caused by a condition in which the number of white blood cells (called neutrophils) in the blood is low. neutrophils help the body to fight infection)Emotional DistressFall
Fatigue (feeling of tiredness)Muscle Rigidity (muscle stiffness)Intervertebral Disc Degeneration (spinal disc degeneration)Blood UrineInsomnia (sleeplessness)Pain In ExtremityDyspnoea (difficult or laboured respiration)

Most common side effects by gender * :

Nausea (feeling of having an urge to vomit)Hypotension (abnormally low blood pressure)
PainPyrexia (fever)
Fatigue (feeling of tiredness)Fatigue (feeling of tiredness)
Pyrexia (fever)Headache (pain in head)
Pruritus (severe itching of the skin)Dizziness
Abdominal PainAsthenia (weakness)
Oedema Peripheral (superficial swelling)Depression
FallThrombocytopenia (decrease of platelets in blood)

Most common side effects by age * :

Accidental ExposureNeuroleptic Malignant Syndrome (a life-threatening neurological disorder most often caused by an adverse reaction to neuroleptic or antipsychotic agents)Cardiac DisorderVentricular Fibrillation (abnormally irregular heart rhythm)Fatigue (feeling of tiredness)Nausea (feeling of having an urge to vomit)PainVomiting
Rectal Prolapse (falling of rectum from normal place)Cardiac DisorderVomitingCardiac ArrestDyspnoea (difficult or laboured respiration)Pyrexia (fever)Anaemia (lack of blood)Hypotension (abnormally low blood pressure)
Cardio-respiratory Arrest (sudden dysfunction of heart and lungs)Epstein-barr Virus InfectionTorsade De Pointes (a abnormal heart rate with abnormal beating pattern)Suicide AttemptHeadache (pain in head)AnxietyMalaise (a feeling of general discomfort or uneasiness)
PneumoniaInjuryPainPyrexia (fever)FallPneumoniaSomnolence (a state of near-sleep, a strong desire for sleep)
Sudden DeathHypersensitivityComa (state of unconsciousness lasting more than six hours)Loss Of ConsciousnessFatigue (feeling of tiredness)CoughDiarrhoea
Bradyarrhythmia (heart slowness)Abdominal TendernessDrug DependenceSyncope (loss of consciousness with an inability to maintain postural tone)Multiple Sclerosis Relapse (reoccurrence of a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath)Abdominal PainPyrexia (fever)
Somnolence (a state of near-sleep, a strong desire for sleep)Cholecystitis Chronic (long lasting infection of gallbladder)Upper Respiratory Tract InfectionAsthenia (weakness)VomitingEmotional DistressAsthenia (weakness)
Abscess (pus)Decreased Appetite (decreased appetite occurs when you have a reduced desire to eat)Drug IneffectiveMultiple Sclerosis (a nervous system disease that affects your brain and spinal cord. it damages the myelin sheath)DizzinessDiverticulum (out pouching of a hollow (or a fluid-filled) structure in the body)Nausea (feeling of having an urge to vomit)
Hypotonia (low muscle tone)Food Intolerance (inability to have food)Sudden DeathMalaise (a feeling of general discomfort or uneasiness)Blood Pressure Decreased (abnormally low blood pressure)Hypophagia (reduced food intake)Hyperkalaemia (damage to or disease of the kidney)
Tremor (trembling or shaking movements in one or more parts of your body)Abdominal PainBlood Potassium DecreasedAltered State Of Consciousness (altered state of mind)ConstipationNausea (feeling of having an urge to vomit)Decreased Appetite (decreased appetite occurs when you have a reduced desire to eat)

* Some reports may have incomplete information.

Browse Tizanidine hydrochloride side effects from A to Z:

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Are you taking Tizanidine hydrochloride?

Comments from related studies:

  • From this study (2 weeks ago):

  • peanuts on Mar, 31, 2010:

    my friend is suffering from rhumatory arthertis.and is currenty taking cocaine. oxy cotin,prestine, wellbutrim, predisone 10mg what side effects should she expect ?????


    mtntexas on May, 11, 2013:

    Just ask John Belushi


    2cents on Mar, 6, 2013:

    I'll second that!


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More reviews for: Tizanidine hydrochloride

On eHealthMe, Tizanidine Hydrochloride (tizanidine hydrochloride) is often used for muscle spasms. Find out below the conditions Tizanidine Hydrochloride is used for, how effective it is, and any alternative drugs that you can use to treat those same conditions.

What is Tizanidine Hydrochloride used for and how effective is it:

Other drugs that are used to treat the same conditions:

Studies of common Tizanidine hydrochloride drug interactions:

Browse Tizanidine hydrochloride drug interactions with drugs from A to Z:

NOTE: The study is based on active ingredients and brand name. Other drugs that have the same active ingredients (e.g. generic drugs) are NOT considered.

WARNING: Please DO NOT STOP MEDICATIONS without first consulting a physician since doing so could be hazardous to your health.

DISCLAIMER: All material available on is for informational purposes only, and is not a substitute for medical advice, diagnosis, or treatment provided by a qualified healthcare provider. All information is observation-only, and has not been supported by scientific studies or clinical trials unless otherwise stated. Different individuals may respond to medication in different ways. Every effort has been made to ensure that all information is accurate, up-to-date, and complete, but no guarantee is made to that effect. The use of the eHealthMe site and its content is at your own risk.

You may report adverse side effects to the FDA at or 1-800-FDA-1088 (1-800-332-1088).

If you use this eHealthMe study on publication, please acknowledge it with a citation: study title, URL, accessed date.


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