Levbid® (hysocyamine sulfate extended release tablets) extended-release tablets contain 0.375 mg of hyoscyamine sulfate in a formulation designed for oral b.i.d. dosage.

Hyoscyamine sulfate is one of the principal anticholinergic/antispasmodic components of belladonna alkaloids. The empirical formula is (C₁₇H₂₃NO₃)₂•H₂SO₄•2H₂O and the molecular weight is 712.85. Chemically, it is benzeneacetic acid, a-(hydroxymethyl)-, 8-methyl-8-azabicyclo [3.2.1.] oct-3-yl ester, [3(S)-endo]-, sulfate (2:1), dihydrate with the following structure:

Each Levbid® (hysocyamine sulfate extended release tablets) extended-release tablet also contains as inactive ingredients: calcium phosphate dibasic, ethylcellulose, lactose monohydrate, magnesium stearate, microcrystalline cellulose and stearic acid.

Last reviewed on RxList: 3/13/2009
This monograph has been modified to include the generic and brand name in many instances.