What are contraceptive pills?

Contraceptive pills are oral tablets taken daily to prevent pregnancy. There are two main types:

  • Combined Pill (COC) – contains oestrogen and progestogen
  • Progestogen-Only Pill (POP) – contains only progestogen

Both types are highly effective when taken correctly.

Combined Oral Contraceptive Pill (COC)Progestogen-Only Pill (POP / Mini Pill)
How it works:
-Stops the release of an egg (ovulation)
-Thickens cervical mucus (blocks sperm)
-Thins the womb lining (prevents implantation)
How it works:
-Thickens cervical mucus (all POPs)
-Some types (desogestrel) also stop ovulation
Effectiveness:
-Over 99% effective if taken correctly
-Around 91% effective with typical use (due to missed pills)
Effectiveness:
-Over 99% effective with perfect use
-Around 91% effective with typical use
How to take it:
-21 days on, 7-day break (or take placebo pills)
-Some brands allow continuous use (tailored regimens)
How to take it:
-Take at the same time every day
-No break – continuous use
Benefits:
-Lighter, more regular periods
-May reduce acne, cramps, PMS
-Can help with endometriosis or PCOS symptoms
-Protective against ovarian, endometrial, and bowel cancers
Benefits:
-Safe for people who can’t take oestrogen
-Suitable for breastfeeding
-Fewer hormonal side effects for some
-Can help with period pain and endometriosis
Risks:
-Slightly increased risk of blood clots, stroke, or breast cancer (rare)
-Not suitable for smokers over 35 or people with certain health conditions (e.g. migraines with aura)
Risks:
-Irregular bleeding or spotting
-No periods (which is safe)
Side effects may include:
-Nausea, breast tenderness, mood changes, spotting
-Most settle within 2–3 months
Side effects may include:
-Headaches, mood changes, breast tenderness

Who can use contraceptive pills?

Most people can take either type of pill, but your GP or nurse will check for:

  • Medical history (e.g. high blood pressure, clotting risk)
  • Migraine types
  • Smoking status and age
  • Breastfeeding status

Things to remember:

  • Take pills at the same time every day
  • Some medications (e.g. antibiotics, epilepsy drugs) may interfere
  • If you miss a pill, follow the instructions in the leaflet or speak to a healthcare provider
  • Pills don’t protect against STIs – use condoms for protection

When to seek advice:

  • Missed pills or vomiting/diarrhoea
  • Side effects you’re struggling with
  • Wanting to switch methods
  • Unplanned pregnancy concerns

Need support choosing?

WWWW can help you choose the pill that’s right for your body and lifestyle, book a consultation today to find a contraception method that suits you.