Birth Control Types Compared: Effectiveness, Side Effects & Cost

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Birth Control Types Compared: Effectiveness, Side Effects & Cost

Choosing birth control is a medical decision made with your pharmacist, not your best friend who “loves her pill.” But with 12+ methods available, the options can feel overwhelming.

Here is the honest, no-nonsense comparison of every major method — effectiveness, how it works, what it costs, and the side effects people actually experience.

The Effectiveness Reality Check

Effectiveness is measured in two ways:

• Perfect use — used exactly as directed every time
• Typical use — how it performs in real life (people forget, misuse, etc.)

The gap between the two is where most “oops” pregnancies happen. That is why some methods are “set and forget” and others require daily effort.

The Comparison Chart

The Top 3 “Set and Forget” Methods (Most Reliable)

1. IUD (Intrauterine Device).
A small T-shaped device placed in your uterus by a doctor. Copper versions (Paragard) last 10 years, no hormones. Hormonal versions (Mirena, Kyleena) last 3-8 years and often lighten or stop periods. Insertion is briefly uncomfortable but most women report it is worth the years of zero-effort protection.

2. Implant (Nexplanon).
A matchstick-sized rod placed under the skin of your upper arm. Lasts 3-5 years. The most effective method available at 99.95%. Some women experience irregular bleeding.

3. Depo-Provera shot.
A progestin shot every 12 weeks. Extremely effective, and you can stop it any time (though it can take up to 10 months to conceive afterward). Can cause weight gain and bone density loss with long-term use.

The Daily/Weekly Methods (Good for Some People)

The pill. Still the most popular method. Comes in combined (estrogen + progestin) and progestin-only versions. You must take it at roughly the same time daily — a missed pill is the #1 cause of pill failures. If you have a regular cycle, you know your body’s rhythm — but do not rely on rhythm alone.

The patch. A sticker worn on the skin, replaced weekly. Same hormones as the pill, 3 weeks on, 1 week off.

The ring. A flexible ring inserted vaginally for 3 weeks, removed for 1 week. Lower dose of hormones than the pill because it absorbs directly.

The Non-Hormonal Options

Copper IUD. The only “set and forget” non-hormonal method. It does not stop ovulation — it creates a toxic environment for sperm. Downside: heavier periods and cramps for some women, especially in the first year.

Condoms. The only method that also protects against STIs. Always worth combining with another method if pregnancy prevention is critical.

Diaphragm and sponge. Barrier methods with spermicide. Less popular now but valid options for women who cannot use hormones.

Fertility awareness. Tracking cervical mucus, temperature, and cycle signs. Highly effective with perfect use (99%) but requires strict daily tracking and discipline. Read our signs of ovulation guide to see what is involved. Note: not for irregular cycles.

Withdrawal. Better than nothing, but the least reliable barrier method. Pre-ejaculate can contain sperm.

Emergency Contraception

Plan B (levonorgestrel) works best within 72 hours and becomes less effective with weight over ~165 lbs. Ella (ulipristal) works up to 120 hours and works better at higher weights — ask a pharmacist. The copper IUD inserted within 5 days is the most effective emergency contraception (99.9%).

Which Method Should You Choose?

Ask yourself these questions:

1. Do you want a period or not? Hormonal IUDs, implant, and shot often reduce or stop periods. Copper IUD keeps them.
2. Are you consistent with daily habits? If not, avoid methods requiring daily action.
3. Do you need STI protection? Only condoms provide it.
4. Do you want children eventually? All reversible methods allow it, but some (shot) delay return to fertility longer.
5. Any medical conditions? Migraines with aura, blood clots, high blood pressure, and smoking over 35 affect which methods are safe. Your doctor must rule these out.

When to See a Doctor

• Sudden swelling, pain, or redness in one leg (possible blood clot), or chest pain and breathlessness – seek urgent care
• Severe headache, visual changes, or weakness on one side – stop the combined pill and get medical help the same day
• Migraine with aura – the combined pill raises stroke risk and is usually avoided
• High blood pressure, or a history of clots, stroke, or breast cancer – the options that suit you change
• Possible pregnancy, or pain and fever with an IUD in place
• Irregular bleeding that continues beyond the first 3 months

Frequently Asked Questions

Last updated: July 2026

Sources:

• Centers for Disease Control and Prevention — Contraception
• American College of Obstetricians and Gynecologists — Birth control
• Office on Women’s Health — Birth control methods
• Planned Parenthood — Birth control