Clonazepam Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Severe expression

  • Muscle Weakness

If experienced, these tend to have a Less Severe expression

  • Dizziness
  • Drowsiness
  • Indigestion
  • Inducing Of A Relaxed Easy State
  • Loss Of Muscle Coordination
  • Low Energy
  • Slurred Speech

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • Abnormal Nervous System Function Affecting Alertness
  • Behavioral Problems
  • Confusion

If experienced, these tend to have a Less Severe expression

  • Bronchitis
  • Cough
  • Diarrhea
  • Intense Abdominal Pain
  • The Inability To Have An Erection
  • Throat Irritation

RARE side effects


If experienced, these tend to have a Severe expression

  • A Hypersensitivity Reaction To A Drug
  • A Movement Disorder Called Dysdiadochokinesis
  • A Skin Rash
  • A Tonic-Clonic Seizure
  • Abnormal Liver Function Tests
  • Accidental Falls
  • An Enlarged Liver
  • An Inability To Completely Empty The Bladder
  • Anemia
  • Decreased Blood Platelets
  • Decreased Lung Function
  • Dehydration
  • Depression
  • Feelings Of Hostility
  • Hallucinations
  • Hemiparesis
  • Increased Eosinophils In The Blood
  • Irregular Involuntary Spasms Of Limbs Or Facial Muscles
  • Low Levels Of White Blood Cells
  • Manic Behavior
  • Memory Loss
  • Mental Problems From Taking The Drug
  • Suicidal Behavior
  • Suicidal Thoughts
  • Worsening Of Seizure

If experienced, these tend to have a Less Severe expression

  • A Change In Vision
  • A Loss Of Taste
  • A Problem With Menstrual Periods
  • A Sleep Disorder
  • A Type Of Speech Disorder Called Dysarthria
  • A Type Of Stomach Irritation Called Gastritis
  • Abnormal Color Of Urine
  • Abnormal Dreams
  • Addiction To A Drug
  • Aggressive Behavior
  • Agitation
  • Altered Interest In Having Sexual Intercourse
  • An Increased Interest In Having Sexual Intercourse
  • Anxious Feelings
  • Blurred Vision
  • Breast Pain
  • Bronchial Congestion
  • Changes In The Visual Field
  • Constipation
  • Contact Dermatitis, A Type Of Skin Rash That Occurs From Contact With An Offending Substance
  • Cramps
  • Decreased Appetite
  • Decreased Tone Or Tension In A Part Of The Body
  • Depersonalization, A Disconnection Of One's Own Sense Of Reality Or Identity
  • Deviation Of The Eyes Upward Or Downward
  • Difficult Or Painful Urination
  • Double Vision
  • Dry Eye
  • Dry Mouth
  • Dry Skin
  • Excessive Saliva Production
  • Excessive Thirst
  • Fever
  • Gum Pain
  • Hair Loss
  • Headache
  • Heart Throbbing Or Pounding
  • Hirsutism, A Condition Of Hair Growth On Parts Of The Body Normally Without Hair
  • Increased Hunger
  • Inflammation Of The Bladder
  • Involuntary Leakage Of Urine
  • Irritability
  • Itching
  • Loss Of Voice
  • Muscle Pain
  • Muscle Tremors
  • Nausea
  • Nervousness
  • Nightmares
  • Nystagmus, A Condition With Involuntary Eye Movements
  • Orthostatic Hypotension, A Form Of Low Blood Pressure
  • Over Excitement
  • Problems Thinking Clearly
  • Puffy Face From Water Retention
  • Runny Nose
  • Sensation Of Spinning Or Whirling
  • Sneezing
  • Swollen Lymph Nodes
  • Thickening Of Tongue
  • Trouble Breathing
  • Urination During The Night
  • Weight Gain
  • Weight Loss
  • Yawning

Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.