Combined pill

Ethinyloestradiol 20mcg / Desogestrel 150mcg

Take one tablet per day, for 21 days, then have a 7 day break allowing for a withdrawal bleed. There are 21 pills per pack.


  • usually makes periods regular, lighter and less painful

  • may help with premenstrual symptoms

  • reduces the risk of cancer of the ovary, uterus and colon

  • improves acne in some women

  • you are protected from pregnancy straight away if you start taking the combined pill in the first five days of your period

  • when you stop using the pill your fertility will return to normal

  • there are safe ways to take the pill where you take packs back to back and bleed less often, read about these methods here

  • this is a type of combined pill that you may want to take if you have experienced side effects with another brand - you may respond better to a slightly different dose of hormone..

What users say

I've been on it for about 3 yrs now and it suits me perfectly. I get much lighter periods and less PMS too!

Angie, Gateshead

I started taking mercilon in my mid teens until my late twenties. Never had any bad side effects with it or any pregnancies.


Not sure what to order?

Learn more about the side effects, suitability, and how the pill works.

Or read our FAQs about ordering contraception from Fettle.