A Study of Continuous Oral Contraceptives and Doxycycline
Status:
Completed
Trial end date:
2011-05-01
Target enrollment:
Participant gender:
Summary
The purpose of this study is to learn if the study drug, doxycycline, can decrease the amount
of unplanned vaginal bleeding that women commonly experience when taking combined oral
contraception (COC)- pills with estrogen and progestin - in a continuous fashion - no
hormone-free week. The study drug, doxycycline, is an antibiotic used commonly for many
conditions (i.e. acne, Chlamydia infections, pneumonia) and can be safely used on a daily
basis. Doxycycline has been shown to decrease unplanned vaginal bleeding in progestin-only
contraception but has not been studied in combined hormonal contraception.