Topamax (topiramate) is used to prevent seizures in adults and children and to prevent migraine headaches. Learn about side effects, interactions and indications. TOPAMAX ® (topiramate) Tablets and Capsules. DESCRIPTION. Topiramate is a sulfamate-substituted monosaccharide. TOPAMAX ® (topiramate) Tablets are available as 25 mg, 50 mg, 100 mg, and 200 mg round tablets for oral administration. Note: This document contains side effect information about topiramate. Some of the dosage forms listed on this page may not apply to the brand name Topamax. Side Effects. Tiredness, drowsiness, dizziness, loss of coordination, tingling of the hands/feet, loss of appetite, bad taste in your mouth, diarrhea, and weight loss may occur. Find a comprehensive guide to possible side effects including common and rare side effects when taking Topamax (Topiramate) for healthcare professionals and consumers. Topamax (topiramate) is an anticonvulsant medication used in the treatment of epilepsy and migraine headaches. Topamax is also commonly used off-label to treat a wide range of mood disorders and to aid in substance abuse therapy. Topiramate (Topomax,Qudexy XR, Topamax Sprinkle, Topiragen, Trokendi XR) for migraines and seizures. Side effects, drug interactions, dosing, storage, and pregnancy and breastfeeding information is provided. Find information about common, infrequent and rare side effects of Topamax Oral. Common Side Effects of Topamax. Some side effects of Topamax may disappear after your body gets used to the medication. If they don't go away or worsen, let your doctor know. Topamax is available in 25mg, 50mg, 100mg, and 200mg tablets. It's also available in 15mg and 25mg capsules. Topamax is commonly dosed by safely tapering up the dose to a therapeutic level, which is 100mg or 200mg daily.