Cycloset

DRUG DESCRIPTION

CYCLOSET Tablets contain bromocriptine mesylate, a dopamine receptor agonist. Bromocriptine mesylate is chemically designated [Ergotaman-3',6',18-trione, 2-bromo-12'-hydroxy-2'-(1-methylethyl)-5'-(2-methylpropyl)-, monomethanesulfonate (salt), (5'?)-]. CYCLOSET (bromocriptine mesylate tablets) is a single enantiomer with absolute configuration 5R, 8R, 2'R, 5'S, 11'S, 12'S. The structural formula of bromocriptine is shown below:

CYCLOSET® (bromocriptine mesylate) Structural Formula Illustration

Bromocriptine mesylate is a white or slightly colored fine crystalline powder with a molecular formula of C32H40BrN5O5·CH4SO3 and a molecular weight of 750.72. CYCLOSET tablets contain bromocriptine mesylate USP in an amount equivalent to 0.8 of bromocriptine. Each tablet contains the following inactive ingredients: lactose, corn starch, magnesium stearate, colloidal silicon dioxide, and citric acid.



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