FARESTON (toremifene citrate) Tablets for oral administration each contain 88.5 mg of toremifene citrate, which is equivalent to 60 mg toremifene.

FARESTON is a nonsteroidal antiestrogen. The chemical name of toremifene is: 2-(p-[(Z)-4-chloro-1,2-diphenyl-1-butenyl]-phenoxy)-N,N-dimethylethylamine citrate (1:1). The structural formula is:

and the molecular formula is C ₂₆ H ₂₈ CINO · C ₆ H ₈ O ₇ . The molecular weight of toremifene citrate is 598.10. The pK _a is 8.0. Water solubility at 37°C is 0.63 mg/mL and in 0.02N HCl at 37°C is 0.38 mg/mL.

FARESTON is available only as tablets for oral administration. Inactive ingredients: starch, lactose, povidone, sodium starch glycolate, magnesium stearate, microcrystalline cellulose, and colloidal silicon dioxide.

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