Bleeding pattern with drospirenone 3 mg+ethinyl estradiol 20 mcg 24/4 combined oral contraceptive compared with desogestrel 150 mcg+ethinyl estradiol 20 mcg 21/7 combined oral contraceptive.

The study was conducted to compare cycle control, bleeding pattern and efficacy of two low-dose combined oral contraceptives.
Four hundred fifty-three women were randomized to receive a 24/4 regimen of drospirenone 3 mg/ethinyl estradiol 20 mcg (drsp 3 mg/EE 20 mcg; n=230) or a 21/7 regimen of desogestrel 150 mcg/EE 20 mcg (DSG 150 mcg/EE 20 mcg; n=223), and recorded bleeding daily over 7 treatment cycles.
The duration [mean 4.7 (SD 1.5)-5.2 (SD 2.2) days in the drsp 3 mg/EE 20 mcg 24/4 group and 5.1 (SD 1.5)-5.4 (SD 2.1) days in the DSG 150 mcg/ EE 20 mcg group] and maximum intensity ("normal bleeding" for >50% of all subjects) of scheduled bleeding in Cycles 1-6 was comparable between treatment groups. The incidence of unscheduled bleeding during Cycles 2-6 was also similar between the two groups (drsp 3 mg/EE 20 mcg, 8.8-17.3%; DSG 150 mcg/ EE 20 mcg, 9.4-16.3%).
Drsp 3 mg/EE 20 mcg 24/4 achieved an acceptable bleeding profile with reliable cycle control, comparable with an established formulation.
AuthorsLeena Anttila, Michael Kunz, Joachim Marr
JournalContraception (Contraception) Vol. 80 Issue 5 Pg. 445-51 (Nov 2009) ISSN: 1879-0518 [Electronic] United States
PMID19835718 (Publication Type: Comparative Study, Journal Article, Multicenter Study, Randomized Controlled Trial, Research Support, Non-U.S. Gov't)
Chemical References
  • Androstenes
  • Contraceptives, Oral, Combined
  • drospirenone and ethinyl estradiol combination
  • ethinyl estradiol-desogestrel combination
  • Ethinyl Estradiol
  • Desogestrel
  • Adolescent
  • Adult
  • Androstenes (adverse effects, pharmacology)
  • Contraceptives, Oral, Combined (adverse effects, pharmacology)
  • Desogestrel (adverse effects, pharmacology)
  • Ethinyl Estradiol (adverse effects, pharmacology)
  • Female
  • Humans
  • Menstrual Cycle (drug effects)
  • Menstruation Disturbances (chemically induced)
  • Metrorrhagia (chemically induced)
  • Patient Satisfaction (statistics & numerical data)
  • Treatment Outcome
  • Young Adult

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