+ Types of<unk>  Hormonal Contraceptives Formulation Efficacy Perfect Use<unk>  oral contraceptive pill Various formulations (10-50 µg estrogen (average 20-35) and 0.05–3 mg progesterone ) 9% failure rate with typical use (method not used consistently or correctly) 0.3% failure rate with perfect use Meant to be taken at the same time every day (some pills can be taken within 2–24 hours and still be effective)<unk>  contraceptive patch 120-150 µg of norelgestromin and 20-35 µg ethinyl estradiol daily New patch used once a week, after 3 weeks patch is not worn to allow for withdrawal bleeding<unk>  contraceptive vaginal ring 120-150 µg etonogestrel and 13-15 µg ethinyl estradiol daily Vaginal ring worn for 21 days and removed for the following 7 days to allow for withdrawal bleeding *<unk>  injectable contraceptive, additional category of CHC not available in the USA or UK * The Faculty of Sexual and Reproductive Healthcare has issued guidelines for incorrect use * Note: hormonal use for 21 days followed by 7 day withdrawal is the most common regimen however schedules are variable; Other factors affecting effectiveness include drug interactions, malabsorption and body weight Hypothalamic-pituitary-adrenal axis
Combined hormonal contraception
Long-acting reversible contraception
Male contraceptive
Heat-based contraception
Hormonal contraception
High-dose estrogen
Nonsteroidal estrogen
Antiprogestogen