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c4urself.org.ukNHS DumfriesDept of Family Planning
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tel: 0845 023 687
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Under 20's » Contraception » Combined Oral Contraception
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COMBINED ORAL

Reliability
Depends on the individual taking it properly.
99% effective.
One woman in 100 will get pregnant a year.

How it works
Each pill contains two hormones (oestrogen and progestogen).
Taken daily at the same time for 21 days and then seven days not taking it at all.
Stops a woman from releasing an egg each month (ovulation).

Possible Side Effects
Major blood clots (thrombosis) - rare.
Minor - temporary nausea / headaches / mood changes / breast tenderness / weight gain or loss.

Advantages / Benefits
Often reduces period pain and bleeding.
Often reduces PMT.
Protects against cancer of womb.
Protects against some pelvic infections.
Reliable if taken properly.

Suitability

  • not for all women
  • not for smokers over 35
  • not when breast feeding
  • not for those with certain types of migraine
  • not for those with a history of blood clots
  • not for those who easily forget to take pills
  • for some women up to age of menopause

Who can provide it?
GP or Family Planning Service

Comments
not effective:

  • if next packet is not started on time
  • if a pill is taken 12 hours late
  • with some antibiotics
  • after vomiting or severe diarrhoea
  • with some other drugs