Modafinil Side Effects by Likelihood and Severity

COMMON side effects


If experienced, these tend to have a Less Severe expression

  • Anxious Feelings
  • Backache
  • Diarrhea
  • Difficulty Sleeping
  • Dizziness
  • Head Pain
  • Indigestion
  • Inflammation Of The Nose
  • Nausea
  • Nervousness

INFREQUENT side effects


If experienced, these tend to have a Severe expression

  • A Change In Vision
  • A Type Of Abnormal Movement Disorder Called Dyskinesia
  • Abnormal Heart Rhythm
  • An Inability To Completely Empty The Bladder
  • Chest Pain
  • Chills
  • Confusion
  • Depression
  • Fast Heartbeat
  • Fever
  • High Blood Pressure
  • High Blood Sugar
  • Lazy Eye
  • Low Blood Pressure
  • Memory Loss
  • Mood Changes
  • Throat Irritation

If experienced, these tend to have a Less Severe expression

  • An Abnormal Increase In Muscle Tone
  • Constipation
  • Decreased Appetite
  • Dry Mouth
  • Excessive Thirst
  • Flu-Like Symptoms
  • Heart Throbbing Or Pounding
  • Muscle Tremors
  • Numbness And Tingling
  • Vomiting
  • Widening Of Blood Vessels

RARE side effects


If experienced, these tend to have a Severe expression

  • A Significant Type Of Allergic Reaction Called Anaphylaxis
  • A Skin Disorder With Blistering And Peeling Skin Called Stevens-Johnson Syndrome
  • A Skin Disorder With Blistering And Peeling Skin Called Toxic Epidermal Necrolysis
  • A Skin Rash
  • A Type Of Allergic Reaction Called Angioedema
  • A Type Of Significant Allergic Skin Reaction Called DRESS Syndrome
  • Abnormal Heart Electrical Signals
  • Abnormal Liver Function Tests
  • Abnormal Peeling Of Skin
  • Asthma
  • Asystole, Stopping The Heart
  • Blistering Of The Skin
  • Bloody Urine
  • Decreased Blood Platelets
  • Hives
  • Hyperactive Behavior
  • Increased Eosinophils In The Blood
  • Inflammation Of The Liver Called Hepatitis
  • Inflammation Of The Middle Tissue Heart Muscle
  • Low Levels Of White Blood Cells
  • Manic Behavior
  • Mental Problems
  • Stomatitis, A Condition With Painful Swelling And Sores Inside The Mouth
  • Suicidal Thoughts
  • Trouble Breathing
  • Very Low Levels Of Granulocytes, A Type Of White Blood Cell
  • Visible Water Retention

If experienced, these tend to have a Less Severe expression

  • Aggressive Behavior
  • Agitation
  • Excessive Sweating
  • Gas
  • Generalized Weakness
  • Itching
  • Taste Impairment

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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.