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.
