A tri-phasic combined contraceptive pill that’s 99% effective in preventing pregnancy when taken correctly. Logynon causes fewer side effects for some women.

  • Take daily for 21 days, with a 7-day break
  • Need a blood pressure check within the last year to take safely
  • 99% effective when taken correctly


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Taking Logynon

Take the first pill from the section of the pack marked ‘start’. This will be an active pill. Take a pill every day until the pack is finished (21 days). Take the pills in the correct order and try to take them at the same time each day. Then stop taking pills for 7 days. Start the next strip after the 7-day break. Taking the pills in the wrong order could mean you’re not protected from pregnancy.

Side effects

Many women do not experience any side effects, however some will. These can include mood swings, irregular bleeding, skin irritation, headaches, or feeling sick. Rarely, some women develop blood clots. This pill carries a slightly higher risk of blood clots than others. If you have any concerns, send us a message via our contact form.

For full information on side effects and correct use, see the patient information leaflet. If any side effects concern you, contact us via our contact form.


If you start using Logynon on days 1-5 of your period, you will be protected against pregnancy immediately. If you start taking it later (only if you are sure you could not be pregnant), you will need to use condoms for at least seven days until Logynon starts to work.

When taken correctly, Logynon is 99% effective in preventing pregnancy. However, if you are vomiting or have severe diarrhoea you may not be protected against pregnancy. If this happens, continue to take the pill as usual but use a condom whilst you’re ill.

If you miss your pill

This depends on when and how many pills are missed. Missing one pill, at any time, does not compromise contraception.

Up to 48hrs since your last pill – take your next pill as soon as you remember and continue the rest of the pack as usual. This might mean you need to take 2 pills on 1 day.

More than 48hrs – this depends on when you last took your pill and where you are in your pill packet. Please check the patient information leaflet for further information.

How it works

Logynon is a ‘tri-phasic’ combined contraceptive. This means the dose of hormones (levonorgestrel and ethinylestradiol) changes 3 times a month.

The pills must be taken in the prescribed order for the medicine to be effective. After completing 21 days, you will take a seven day break during which your hormone levels will drop (allowing your period to occur), before starting on the next pack.

Important information about Logynon

If you’ve already bought your pill from us, you can request a further 3 or 6-month supply, if you’re medically suitable. If you want to change your pill, please send us a message via our contact form.

Combined contraceptives can cause your blood pressure to rise, which can be dangerous. Your blood pressure needs checking before starting any combined contraceptive, then once a year after that.

Safety: taking other medicines

You should be able to take Logynon alongside other medicines. However, it is important that you let us know which prescription, over-the-counter medicines and recreational drugs you are taking so that we can prescribe Logynon safely.



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