Drug Information for Topiramate Tablets (Sun Pharmaceutical Industries Limited): DESCRIPTION

  • Topiramate is a sulfamate-substituted monosaccharide. Topiramate tablets are available as 25 mg, 50 mg, 100 mg, and 200 mg circular tablets for oral administration.

    Topiramate is a white crystalline powder with a bitter taste. Topiramate USP is most soluble in alkaline solutions containing sodium hydroxide or sodium phosphate and having a pH of 9 to 10. It is freely soluble in acetone, chloroform, dimethylsulfoxide, and ethanol. The solubility in water is 9.8 mg/mL. Its saturated solution has a pH of 6.3. Topiramate has the molecular formula C12H21NO8S and a molecular weight of 339.37. Topiramate is designated chemically as 2,3:4,5-Di-O-isopropylidene-ß-D-fructopyranose sulfamate and has the following structural formula:

    Topiramate tablets contain the following inactive ingredients: anhydrous lactose, microcrystalline cellulose, pregelatinized starch, sodium starch glycolate, magnesium stearate, purified water, polyvinyl alcohol, titanium dioxide, polyethylene glycol and talc.

    In addition, individual tablets contain:

    50 mg tablets: iron oxide yellow100 mg tablets: iron oxide yellow, and D&C Yellow # 10 Aluminum Lake200 mg tablets: iron oxide red, lecithin (soya), and iron oxide black

  • Drug Information Provided by National Library of Medicine (NLM).