Hormones and Birth Control
This category covers hormonal medications including emergency contraception (Plan B), ovulation induction (clomiphene), and menopausal hormone therapy (conjugated estrogens). Each requires medical evaluation.
Overview
Hormonal medications encompass a broad therapeutic area including contraceptives, emergency contraception, ovulation induction agents and hormone replacement therapy. The molecules differ widely: synthetic progestins (levonorgestrel) used in emergency contraception; selective estrogen receptor modulators (clomiphene) for ovulation induction; conjugated estrogens for menopausal symptom relief. Each acts on hormone-sensitive tissues but through different mechanisms, with distinct indications, dosing schedules and safety profiles.
Common treatments
Emergency contraception with levonorgestrel (Plan B) is most effective when taken as soon as possible after unprotected intercourse, ideally within 72 hours. Clomiphene citrate is used in fertility medicine to induce ovulation in selected women with anovulatory infertility, typically as a 5-day course early in the menstrual cycle. Menopausal hormone therapy (conjugated estrogens, with or without a progestogen) treats vasomotor symptoms and genitourinary syndrome of menopause; risk-benefit varies with age, time since menopause and personal risk factors.
When to consult
Hormonal medications should be initiated under medical guidance because of differing risk-benefit profiles by age, reproductive stage and personal/family history. Emergency contraception is the exception — many jurisdictions allow over-the-counter access to enable rapid use after unprotected intercourse, but consultation is advised for repeated use or to discuss longer-term contraception. According to clinical guidelines, hormone replacement therapy in particular requires individualised risk assessment.
Medications
Frequently asked questions
How quickly does emergency contraception need to be taken? ▾
Levonorgestrel-based emergency contraception (Plan B) is most effective when taken within 72 hours of unprotected intercourse, with declining effectiveness over that window. Some efficacy persists up to 120 hours but is lower. According to clinical guidelines, the goal is to take the dose as soon as possible after the contraceptive failure, not to wait. Faster use means higher prevention of pregnancy.
Is hormone replacement therapy safe? ▾
The safety of hormone replacement therapy depends on the woman's age, time since menopause, type of HRT, and personal risk factors. According to current guidelines, HRT initiated within 10 years of menopause and before age 60 has a generally favourable risk-benefit profile for symptomatic women. Decisions should be individualised and reassessed periodically; lower-dose, shorter-duration regimens are preferred when possible.
What is clomiphene used for? ▾
Clomiphene citrate is used to induce ovulation in selected women with anovulatory infertility, particularly polycystic ovary syndrome (PCOS). It works by blocking estrogen feedback at the hypothalamus, increasing FSH release and stimulating follicle development. According to current fertility guidelines, clomiphene is one of several first-line options; effectiveness varies by cause of infertility. It is not approved for general fertility enhancement in regularly ovulating women.
Can hormonal contraceptives be used as emergency contraception? ▾
Standard combined oral contraceptives can be used in emergency contraception (the Yuzpe method), but they are less effective and have more side effects than dedicated emergency contraceptive pills like Plan B. According to current guidelines, levonorgestrel and ulipristal-acetate emergency contraceptives are preferred. The copper IUD inserted within 5 days is the most effective emergency contraception option but requires a clinical visit.
Are these medications safe to buy online? ▾
Some forms (emergency contraception, low-dose oral contraceptives) are sold over-the-counter or through reputable online pharmacies in many jurisdictions. Other hormonal therapies (HRT, clomiphene) are prescription-only and require medical evaluation. According to regulators, products from unverified online sources may be counterfeit, mis-dosed or contaminated. Online purchase should always be from licensed pharmacies.
The information on this website is provided for reference and educational purposes only. It does not replace consultation with a qualified healthcare professional.