Danazol was dissolved in non-aqueous mixtures containing either polyethylen
e glycol 400 or polysorbate 80, and filled into hard gelatin capsules at 50
mg concentrations. The bioavailability of these formulations was compared
with commercial danazol capsules in a two-way crossover study using young f
emale beagle dogs. Both formulations showed greater oral bioavailability wh
en compared with either the 100 or 200 mg commercial brand of danazol. The
bioavailability of the polyethylene glycol 400 and polysorbate 80 formulati
ons was enhanced 3.7 and 15.8 times, respectively, when compared at the 100
mg dose level. (C) 1999 Elsevier Science B.V. All rights reserved.