Memantine HCL Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Confused
  • Constipation
  • Cough
  • Diarrhea
  • Dizzy
  • Head Pain

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • Hallucination
  • High Blood Pressure
  • The Flu

If experienced, these tend to have a Less Severe expression

  • Abnormally Low Blood Pressure
  • Acute Infection Of The Nose, Throat Or Sinus
  • Aggressive Behavior
  • Backache
  • Depression
  • Drowsiness
  • Feeling Anxious
  • Low Energy
  • Pain
  • Problems With Bladder Control
  • Stomach Cramps
  • Throwing Up
  • Weight Gain

RARE side effects


If experienced, these tend to have a Severe expression

  • Abnormal Liver Function Tests
  • Acquired Decrease Of All Cells In The Blood
  • Acute Kidneyl Failure
  • Anemia
  • Atrial Fibrillation
  • Atrioventricular Heart Block
  • Blood Clot In A Deep Vein Of The Extremities
  • Chronic Heart Failure
  • Decreased Blood Platelets
  • Decreased White Blood Cells
  • Deficiency Of Granulocytes A Type Of White Blood Cell
  • Falling
  • Having Thoughts Of Suicide
  • Heart Attack
  • Hepatitis
  • Lung Embolism
  • Pancreatitis
  • Pneumonia
  • Prolonged QT Interval On EKG
  • Stevens-Johnson Syndrome
  • Thrombotic Thrombocytopenic Purpura
  • Trouble Breathing
  • Very Rapid Heartbeat - Torsades De Pointes

If experienced, these tend to have a Less Severe expression

  • Abnormal Manner Of Walking
  • Bronchitis
  • Chronic Trouble Sleeping
  • Easily Angered Or Annoyed
  • Extreme Loss Of Body Water
  • Feel Like Throwing Up
  • Feeling Weak
  • Fever
  • Fluid Retention In The Legs, Feet, Arms Or Hands
  • High Blood Sugar
  • Loss Of Appetite
  • Nervous
  • Seizures
  • Slow Heartbeat
  • Throat Irritation
  • Unable To Control Bowel Movement
  • Urinary Tract Infection

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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.