8. www.freelivedoctor.com Common trade names Duration of effect Active ingredients Name Depo-Provera, Depo-Clinovir, others 90 days 150 mg medroxyprogesterone acetate in an aqueous microcrystalline suspension DMPA (progestogen-only) Noristerat, Norigest, Doryxas, and others 60 days 200 mg norethisterone enanthate in an oily preparation NET-EN (progestogen-only ) Mesigyna, Norigynon 30 days 50 mg norethisterone enanthate and 5 mg estradiol valerate Mesigyna (combined)