SPL Set ID: 1e0006b6-9405-95a7-e063-6294a90aa277

Mirtazapine tablets, USP contain mirtazapine, USP. Mirtazapine has a tetracyclic chemical structure and belongs to the piperazino-azepine group of compounds. It is designated 1,2,3,4,10,14b-hexahydro-2-methylpyrazino [2,1-a] pyrido [2,3-c][2] benzazepine and has the empirical formula of C 17 H 19 N 3 . Its molecular weight is 265.35. The structural formula is the following and it is the racemic mixture: Mirtazapine is a white to creamy white crystalline powder which is practically insoluble in water. Mirtazapine tablets are available for oral administration as scored film-coated tablets containing 15 mg or 30 mg of mirtazapine, and unscored film-coated tablets containing 7.5 mg or 45 mg of mirtazapine. Each tablet contains the following inactive ingredients: colloidal silicon dioxide, corn starch, hydroxypropyl cellulose, hypromellose, lactose monohydrate, magnesium stearate, polyethylene glycol, and titanium dioxide. The 7.5 mg tablets also contain sunset yellow FCF lake and Allura red AC lake. The 15 mg tablets also contain iron oxide yellow, quinoline yellow lake and sunset yellow FCF lake. The 30 mg tablets also contain ferric oxide yellow, ferric oxide red and ferrosoferric oxide/iron oxide black. FDA approved dissolution method differs from the USP dissolution testing. Chemical Structure