Topamax is the medicine with active ingredient Topiramate. Topiramate is also manufactured by differ manufacturers and sold in differ countries under the trade names Epitomax, Topamac, Topamax, Topaz-25, Topimax, Topiramat, Topiramato. All these medicines are original brand name medicines or pharmaceutical analogues. Topamax is an anticonvulsant medicine. Topamax works by decreasing abnormal excitement in the brain. In many cases Topamax can also be used as an antidepressant, most of the time for depressive realism.