Conditions: Contraception
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 24
Healthy volunteers: no

Brief summary:
An open-label, randomized, parallel group trial in healthy female subjects to compare the pharmacokinetics of ethinyl estradiol (EE) of NuvaRing®, a contraceptive patch (EVRA(TM)) and an oral contraceptive (Microgynon® 30).

Detailed description:

Arms:
arm 1: Microgynon(R), 1 tablet every day for 21 days; each tablet contains 0.150 mg levonorgestrel (LNG) and 0.030 mg ethinylestradiol (EE). arm 2: Evra(TM), One patch applied on lower abdomen for 7 days for 3 consecutive weeks, 3 patches in total. Each patch contains 6 mg norelgestromin and 0.750 mg EE releasing 0.150 mg norelgestromin and 0.020 mg EE per day. arm 3: Nuvaring(R), Place the ring in the vagina for 21 days, remove for one week. Repeat with new Ring. Dose: per ring 11.7 mg ENG and 2.7 mg EE releasing a daily average amount of 0.120 mg ENG and 0.015 mg EE.

Interventions: intervention 1: Levonorgestrel (LNG)/Ethinylestradiol (EE) oral contraceptive tablets intervention 2: norelgestrominum and ethinylestradiol patch oral contraceptive patch intervention 3: Nuvaring ™ (etonorgestrel/ethinylestradiol)
Intervention descriptions: intervention 1: LNG/EE oral contraceptive tablets (Microgynon® 30), 21 in total, containing 0.150 mg LNG and 0.030 mg EE per tablet administered once daily orally for 21 consecutive days. intervention 2: A contraceptive patch (EVRA ™), one patch for 7 days for three consecutive weeks, 3 patches in total, applied on the lower abdomen. Dose: per patch 6 mg norelgestromin and 0.750 mg EE releasing 0.150 mg norelgestromin and 0.020 mg EE per day. intervention 3: NuvaRing ™ , one ring for a period of 21 days, inserted vaginally. Dose: per ring 11.7 mg etonogestrel and 2.7 mg EE releasing a daily average amount of 0.120 mg etonogestrel and 0.015 mg EE.

Protocol document: