Zonisamide Side Effects by Likelihood and Severity

COMMON side effects

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If experienced, these tend to have a Severe expression

• Loss Of Muscle Coordination

If experienced, these tend to have a Less Severe expression

• Agitation
• Decreased Appetite
• Dizziness
• Drowsiness
• Headache
• Nausea

INFREQUENT side effects

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If experienced, these tend to have a Severe expression

• A Form Of Schizophrenia Called Simple Schizophrenia
• A Skin Rash
• Bruising Under The Skin
• Confusion
• Depression
• Kidney Stones

If experienced, these tend to have a Less Severe expression

• A Feeling Of Pins And Needles On Skin
• A Stuffy And Runny Nose
• A Type Of Speech Disorder Called Dysarthria
• Anxious Feelings
• Constipation
• Diarrhea
• Difficulty Concentrating
• Difficulty Sleeping
• Double Vision
• Dry Mouth
• Flu-Like Symptoms
• Indigestion
• Intense Abdominal Pain
• Low Energy
• Memory Loss
• Mental Status Changes
• Nervousness
• Nystagmus, A Condition With Involuntary Eye Movements
• Taste Impairment
• Vomiting
• Weight Loss

RARE side effects

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If experienced, these tend to have a Severe expression

• A Condition With Muscle Tissue Breakdown Called Rhabdomyolysis
• 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 Type Of Abnormal Movement Disorder Called Dyskinesia
• A Type Of Brain Function Problem Called Encephalopathy
• A Type Of Bumpy Skin Rash Called A Maculopapular Rash
• A Type Of Significant Allergic Skin Reaction Called DRESS Syndrome
• Abnormal Heart Electrical Signals
• Abnormal Liver Function Tests
• Accidental Falls
• An Accidental Injury
• Anemia
• Apnea, A Breathing Interruption
• Blood Coming From Anus
• Coughing Up Of Blood
• Decreased Blood Platelets
• Decreased Kidney Function
• Decreased Sweating
• Dehydration
• Excess Body Acid
• Fever
• Gallstones
• High Amount Of Ammonium In The Blood
• Increased Eosinophils In The Blood
• Inflammation Of The Gallbladder
• Inflammation Of The Large Intestine
• Inflammation Of The Lining Of The Stomach And Intestines
• Liver Tissue Death
• Low Amount Of Sodium In The Blood
• Low Blood Counts Due To Bone Marrow Failure
• Low Levels Of White Blood Cells
• Mental Problems From Taking The Drug
• Overgrowth Of Gums Onto Teeth
• Painful And Involuntary Movement Of The Eyes Called Oculogyric Crisis
• Pancreatitis
• Secondary Angle-Closure Glaucoma, A Type Of Eye Disorder
• Suicidal Thoughts
• Systemic Lupus Erythematosus, An Autoimmune Disease
• Trouble Breathing
• Very Low Levels Of Granulocytes, A Type Of White Blood Cell

If experienced, these tend to have a Less Severe expression

• A Distorted Sense Of Smell Called Parosmia
• A Feeling Of General Discomfort Called Malaise
• A Problem With Menstrual Periods
• Abnormal Manner Of Walking
• An Inability To Completely Empty The Bladder
• An Increased Need To Urinate Often
• Aphasia, A Loss Of The Ability To Speak And Understand Language
• Behavioral Problems
• Chest Pain
• Cough
• Difficulty Swallowing
• Enlarged Breasts
• Fainting
• Gas
• Generalized Weakness
• Hearing Loss
• Heart Throbbing Or Pounding
• Hirsutism, A Condition Of Hair Growth On Parts Of The Body Normally Without Hair
• Hyperesthesia, An Increased Nerve Sensitivity
• Increased Creatine Kinase Levels
• Itching
• Joint Pain
• Leg Cramps
• Low Blood Sugar
• Muscle Pain
• Muscle Weakness
• Nearsightedness
• Neck Stiffness
• Pink Eye
• Ringing In The Ears
• Small Reddish-Purplish Pin-Point Sized Spots On Skin
• Stomatitis, A Condition With Painful Swelling And Sores Inside The Mouth
• Swollen Lymph Nodes
• Throat Irritation
• Thrombophlebitis, An Inflamed Vein Due To A Blood Clot
• Toxic Amblyopia, A Loss Of Vision
• Visible Water Retention