Medroxyprogesterone acetate (MAP) plasma levels after simultaneous oral and intramuscular administration in cancer patients.

After simultaneous administration of medroxyprogesterone acetate (MAP) 1,000 mg PO and 1,000 mg IM to ten cancer patients, we observed mean plasma MAP profiles that could be exactly superimposed on the two absorption/decay curves obtained after administration of single doses IM or PO. Treatment with MAP given simultaneously by the IM and PO routes may be effective in overcoming the drawbacks of both routes, and can also more reliably guarantee plasma levels in the therapeutic range.