Oral Contraceptive (OC)

By RRM Academy Reviewed by Dr. Naomi Whittaker, MD, Board-Certified OBGYN, MIGS, NFPMC, FCI Updated May 14, 2026

An oral contraceptive (OC) is a hormone-based medication taken by mouth to prevent pregnancy. Combined oral contraceptives (COCs) contain synthetic estrogen and progestin. Progestin-only pills contain progestin alone. Both work primarily by suppressing pituitary gonadotropin release, which prevents ovulation. The monthly cycle is not regulated by these medications; it is suppressed. What appears as a period during the pill-free interval is a withdrawal bleed, not a naturally occurring menstrual cycle.

OCs are prescribed for contraception and for a range of non-contraceptive indications including painful periods, androgen-related skin conditions, and cycle-associated symptoms in conditions such as PCOS and endometriosis. In each application, the mechanism is the same: cycle suppression. Symptoms may diminish while the medication is active. The underlying condition does not change. RRM clinicians use the term suppressive medications to name this accurately: the disease continues to progress on its own timeline while ovulation and cycle function are held in suspension.¹

Documented risks associated with OC use include venous thromboembolism, mood and libido changes, and effects on bone mineral density and cardiovascular markers. The magnitude of risk varies by formulation, duration of use, and individual factors. These risks are supported by published evidence and deserve clear disclosure as part of any informed prescribing conversation.¹

For couples seeking non-hormonal approaches to family planning or cycle health, Fertility awareness-based methods (FABMs) offer an evidence-based alternative. FABMs work with the observable signs of the cycle rather than suppressing them, and they provide charting data that can be used clinically when reproductive health concerns arise. Body literacy developed through charting is often the entry point into restorative evaluation.

This content is for educational purposes only and does not constitute medical advice. Consult an RRM clinician or healthcare provider for guidance specific to your situation.