Birth Control Methods: 8 Options Compared

Birth control is personal. There is no single "best method," only the one that suits you best. This guide compares 8 main methods by how well they work, how easy they are to use, side effects, how quickly fertility returns, and cost. Talk it through with your doctor, because chronic health conditions, smoking, age, and your pregnancy plans all affect the choice.

Effectiveness (Pearl Index: pregnancies per 100 users in one year):

• "Perfect use" and "typical use" can differ a lot
• Most effective: implant (0.05), hormonal IUD (0.2), tubal ligation and vasectomy (0.5), copper IUD (0.8)
• Very effective: combined pill (0.3 perfect / 7-9 typical), the shot, the ring
• Effective: condom (2 perfect / 13 typical), diaphragm
• Less effective: fertility awareness or calendar (1-9 perfect / 24 typical), withdrawal (4 / 22)

1. Combined pill (estrogen + progestin): Makes periods more regular, eases period pain, and can clear up acne. Not suitable if you: smoke and are over 35, have migraine with aura, have had a deep vein thrombosis (blood clot), have untreated high blood pressure, have had breast cancer, or are less than 6 weeks postpartum. Possible side effects: nausea, breast tenderness, changes in sex drive, and, rarely, blood clots.

2. Mini pill (progestin only): An option when estrogen isn't right for you, and safe while breastfeeding. Take it at the same time every day. How late you can be depends on the product (3 hours for some, 12-24 hours for others), so check your pill's leaflet. Spotting between periods is common.

3. Hormonal IUD (Mirena, Kyleena): How long it lasts depends on the product (Mirena up to 8 years, Kyleena 5 years), and once it's in, you don't have to think about it. Periods get lighter or stop altogether (especially with Mirena). It can be placed within 48 hours after birth or from 4 weeks postpartum. Side effects: spotting in the first 3-6 months, and about a 5% chance the IUD slips out (expulsion). You can use one even if you have never given birth.

4. Copper IUD: Hormone-free. How long it works depends on the model: the TCu380A (Paragard) lasts 10 years, while the Nova-T 380 lasts 5 years, so ask your doctor which model you have. It can make periods heavier and crampier. It is also the most effective emergency contraception: placed within 5 days of unprotected sex, it is more than 99% effective.

5. Implant (Nexplanon, formerly Implanon): A 4 cm (about 1.5 inch) rod placed under the skin of your upper arm. It contains only progestin and works for 3 years. Bleeding often becomes irregular (about 20% of users stop having periods). It is the most effective reversible method.

6. Ring (NuvaRing) / patch (Xulane, Twirla): Used for 3 weeks, followed by a 1-week break. The same "not suitable if" list as the combined pill applies. You put the ring in yourself.

7. Barrier methods (condom, diaphragm, spermicide): Condoms are the only method that also protects against sexually transmitted infections (STIs). If you have a latex allergy, polyurethane condoms are an alternative.

8. Fertility awareness (natural family planning): Basal body temperature + cervical mucus + calendar. It needs regular cycles and a lot of discipline, and mistakes are common. It can't be used as emergency contraception.

Permanent methods:

• Tubal ligation (for women): Done laparoscopically and hard to reverse
• Vasectomy (for men): Simpler, cheaper, and safer, so it's worth talking about your partner's options too

Emergency contraception (after unprotected sex):

• Levonorgestrel 1.5 mg (e.g. Plan B One-Step and generics, sold over the counter in the US with no age limit or prescription): take it within 72 hours, about 85% effective; the sooner, the better
• Ulipristal acetate 30 mg (ella, prescription only in the US): works up to 120 hours (5 days) after sex and is more effective than levonorgestrel
• Copper IUD: the most effective option, more than 99% effective when placed within 5 days
• Rules and brand names differ by country; a pharmacist can tell you what is available where you live

The "right" method depends on your needs, lifestyle, and health, and it's normal to try more than one. At your appointment, bring up: whether you smoke, any chronic conditions, your pregnancy plans (in 1 year or in 5?), what your periods are like, and what you hope for (lighter periods, or none at all?). The decision is yours; your doctor is there to guide you.