what is in megace
DRUG DESCRIPTION. MEGACEÂ® (megestrol acetate, USP) Oral Suspension contains megestrol acetate, a synthetic derivative of the naturally occurring steroid hormone, progesterone. Megestrol acetate is a white, crystalline solid chemically designated as 17Î±-(acetyloxy)6-methylpregna-4,6-diene-3,20-dione. Solubility at 37Â°C in water is 2 Î¼g per mL, solubility in plasma is 24 Î¼g per mL. Its molecular weight is 384.51.