The most common adverse reactions (those with an incidence of >5% and greater than that observed in placebo in at least 1 indication in double-blind controlled studies with Topiramate) include: anorexia, decreased appetite, bradyphrenia, depression, expressive language disorder, insomnia, coordination abnormal, disturbance in attention, dizziness, dysarthria, dysgeusia, hypoesthesia, lethargy, memory impairment, nystagmus, paresthesia, somnolence, tremor, diplopia, vision blurred, diarrhea, nausea, fatigue, irritability, and weight decreased. (See Table 1.)

Congenital malformations and fetal growth restrictions (see Precautions, Use in Pregnancy & Lactation).
Pediatric population: Adverse reactions reported more frequently (≥2-fold) in children than in adults in double-blind controlled studies include: Decreased appetite; Increased appetite; Hyperchloremic acidosis; Hypokalemia; Abnormal behavior; Aggression; Apathy; Initial insomnia; Suicidal ideation; Disturbance in attention; Lethargy; Circadian rhythm sleep disorder; Poor quality sleep; Lacrimation increased; Sinus bradycardia; Feeling abnormal; Gait disturbance.
Adverse reactions that were reported in children but not in adults in double-blind controlled studies include: Eosinophilia; Psychomotor hyperactivity; Vertigo; Vomiting; Hyperthermia; Pyrexia; Learning disability.
Seek medical attention immediately at the first sign of any adverse drug reaction.
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