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Jencycla is a prescription progestin-only oral contraceptive containing 0.35 mg of norethindrone in each tablet. It is used to prevent pregnancy and does not contain estrogen. It is not indicated for emergency contraception and does not protect against HIV or other sexually transmitted infections.
read more about jencycla ...Norethindrone prevents conception through several actions. It suppresses ovulation in about half of users, thickens cervical mucus to reduce sperm penetration, lowers midcycle luteinizing hormone and follicle-stimulating hormone peaks, slows ovum movement through the fallopian tubes, and changes the endometrium.
Jencycla is used by people who choose a progestin-only oral contraceptive for pregnancy prevention. It is not used during known or suspected pregnancy, in current or suspected breast cancer, unexplained genital bleeding, acute liver disease, liver tumors, or hypersensitivity to a product component.
One tablet is taken at the same time every day, and the next pack starts the day after the previous pack ends with no break between packs. If a tablet is more than three hours late or one or more tablets are missed, the missed tablet is taken as soon as remembered and backup contraception is used for the next 48 hours.
If pregnancy occurs during progestin-only pill use, ectopic pregnancy is a concern and requires medical evaluation when symptoms such as lower abdominal pain occur. Other concerns include ovarian cysts, irregular genital bleeding, liver disease, and drug interactions that can reduce contraceptive activity. Current breast cancer is a contraindication.
Each Jencycla tablet contains 0.35 mg of norethindrone.
One tablet is taken at the same time every day with no break between packs.
The missed tablet is taken as soon as remembered, regular dosing resumes, and backup contraception is used for the next 48 hours.
No. Jencycla does not protect against HIV or other sexually transmitted infections.
Appendix C: Classifications for Progestin-Only Contraceptives. https://www.cdc.gov/contraception/hcp/usmec/progestin-only-contraceptives.html. Date Accessed October 6, 2026.
JENCYCLA (Norethindrone) Prescribing Information. https://www.dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=e91e7bdd-2984-4332-9b0b-04322792d7f6. Date Accessed October 6, 2026.
Progestin-Only (Norethindrone) Oral Contraceptives: MedlinePlus Drug Information. https://www.medlineplus.gov/druginfo/meds/a602008.html. Date Accessed October 6, 2026.
Progestin-Only Pills. https://www.cdc.gov/contraception/hcp/usspr/progestin-only-pills.html. Date Accessed October 6, 2026.
U.S. Selected Practice Recommendations for Contraceptive Use, 2024. https://www.cdc.gov/mmwr/volumes/73/rr/rr7303a1.htm. Date Accessed October 6, 2026.