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Desogestrel-Ethinyl Estradiol 21 tablets

The Hospital for Sick Children · Phase 3 active Small molecule

Desogestrel-ethinyl estradiol prevents ovulation by suppressing the luteinizing hormone surge through progestin and estrogen feedback on the hypothalamic-pituitary axis.

Desogestrel-ethinyl estradiol prevents ovulation by suppressing the luteinizing hormone surge through progestin and estrogen feedback on the hypothalamic-pituitary axis. Used for Contraception / prevention of pregnancy.

At a glance

Generic nameDesogestrel-Ethinyl Estradiol 21 tablets
Also known asMarvelon-21
SponsorThe Hospital for Sick Children
Drug classOral contraceptive
TargetProgesterone receptor, estrogen receptor
ModalitySmall molecule
Therapeutic areaContraception
PhasePhase 3

Mechanism of action

This combination oral contraceptive contains a progestin (desogestrel) and an estrogen (ethinyl estradiol) that work synergistically to inhibit gonadotropin-releasing hormone and suppress follicle-stimulating hormone and luteinizing hormone secretion. By preventing the LH surge, ovulation is blocked, and the progestin also thickens cervical mucus and alters the endometrium to provide additional contraceptive efficacy.

Approved indications

Common side effects

Key clinical trials

Primary sources

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SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

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