Contraception

Birth Control Options: A Complete Comparison Guide

Every contraceptive method compared on effectiveness, side effects, and who it suits best — so you can have an informed conversation with your doctor.

There is no single "best" birth control. The right method depends on your health history, how important preventing pregnancy is right now, whether you want to preserve fertility, how you feel about hormones, and your practical lifestyle. This guide gives you the key facts on every major method.

Two numbers you'll see: "Perfect use" = effectiveness when used exactly as directed. "Typical use" = effectiveness accounting for real-world human error (forgotten pills, incorrect condom use, etc.). The gap between these two numbers tells you how much the method depends on you doing everything right.

Long-Acting Reversible Contraceptives (LARCs)

LARCs are the most effective methods because there's no daily user action required. Once fitted, they work.

Hormonal IUD (Mirena, Liletta, Kyleena)
Hormonal 3–8 years
>99% effective

A small T-shaped device inserted into the uterus. Releases low-dose progestogen locally, which thickens cervical mucus and thins the uterine lining. Most women's periods become much lighter or stop entirely. Fertility returns rapidly after removal.

✓ Pros

  • Highly effective, low maintenance
  • Often eliminates periods
  • Reversible immediately
  • Low systemic hormone levels

✗ Cons

  • Irregular spotting in first 3–6 months
  • Insertion can be painful
  • Small risk of expulsion
  • No STI protection
Copper IUD (Paragard)
Non-hormonal Up to 10–12 years
>99% effective

Copper ions create a toxic environment for sperm, preventing fertilisation. Also works as emergency contraception if inserted within 5 days of unprotected sex. Hormone-free — your natural cycle continues unchanged. Can make periods heavier, especially initially.

✓ Pros

  • Most effective non-hormonal method
  • No hormones — cycle stays natural
  • Emergency contraception option
  • Long-lasting (10+ years)

✗ Cons

  • Can make periods heavier and more painful
  • Insertion discomfort
  • No STI protection
Implant (Nexplanon)
Hormonal 3 years
>99% effective

A matchstick-sized rod inserted under the skin of the upper arm. Releases progestogen continuously, preventing ovulation. The most effective reversible method available. Periods often become irregular or stop — this is the main downside for some women.

✓ Pros

  • Most effective reversible method
  • 3 years with zero maintenance
  • Fertility returns within weeks of removal

✗ Cons

  • Unpredictable bleeding patterns
  • Some women experience hormonal side effects
  • Minor procedure to insert/remove

Short-Acting Hormonal Methods

Combined Oral Contraceptive Pill
Hormonal
91–99%

Contains synthetic estrogen and progestogen. Prevents ovulation. Must be taken daily at roughly the same time. Many formulations available with different hormone levels and types. Often improves acne and reduces PMS and period pain.

✓ Pros

  • Lighter, more predictable periods
  • Can improve acne, PMS, endometriosis
  • Easily stopped when ready to conceive

✗ Cons

  • Must remember daily
  • Small increased clot risk (especially with smoking/age)
  • Possible mood changes, reduced libido
  • No STI protection
Progestogen-Only Pill (Mini-Pill)
Hormonal
91–99%

Contains only progestogen. Works mainly by thickening cervical mucus rather than suppressing ovulation in all cases. Suitable for women who can't take estrogen (migraine with aura, history of blood clots, breastfeeding). Must be taken within a stricter time window.

Contraceptive Patch / Ring (NuvaRing)
Hormonal
91–99%

Both deliver combined hormones. The patch is changed weekly (3 weeks on, 1 week off). The ring is worn vaginally for 3 weeks then removed. Similar benefits and risks to the combined pill but with fewer daily tasks.

Barrier Methods

Male / External Condom
Non-hormonal
85–98%

The only contraceptive method that also protects against STIs. Must be used correctly every time. Gap between perfect and typical use is significant — mostly from inconsistent use or breakage.

Fertility Awareness Methods (FAM)

Fertility Awareness / Natural Family Planning
Non-hormonal
76–99%

Tracking your cycle to identify fertile days and avoiding unprotected sex during them. Modern evidence-based methods (Symptothermal Method, Marquette, TCOYF) have up to 99% effectiveness with correct use. Requires consistent tracking of BBT, cervical mucus, and cycle length. Apps like WomensPal help track the data.

✓ Pros

  • No hormones or devices
  • Also helps when trying to conceive
  • Increases cycle awareness

✗ Cons

  • High learning curve
  • Typical-use effectiveness much lower
  • Requires consistent daily tracking
  • No STI protection

Track Your Cycle — Whatever Your Birth Control Choice

Whether you're using hormonal contraception, FAM, or planning to conceive, WomensPal helps you understand your body and take control of your reproductive health.

Start tracking free →

Frequently Asked Questions

What is the most effective form of birth control?

The most effective methods are the implant and hormonal IUDs (over 99% effective with no user error required), followed by the copper IUD. Sterilisation is also over 99% effective but permanent.

What birth control doesn't affect hormones?

Hormone-free options include: the copper IUD (over 99% effective), condoms (85–98%), diaphragm with spermicide, and fertility awareness methods (FAM). The copper IUD is the most effective non-hormonal option.

How soon can I get pregnant after stopping birth control?

After stopping the pill, patch, or ring, fertility typically returns within 1–3 months. After removing an IUD or implant, fertility can return within days. After the injectable (Depo-Provera), it may take 6–12 months for fertility to fully return.

Does birth control affect periods?

Yes. Combined pills often make periods lighter and more regular. The hormonal IUD and implant often reduce or stop periods. The copper IUD can make periods heavier. The progestogen-only pill causes irregular bleeding in many women.

Related: Birth Control & Period Changes · Menstrual Cycle Phases · How to Track Your Period