The Hormonal Contraceptive Injection

The Hormonal Contraceptive Injection releases the hormone progestogen into your bloodstream to prevent pregnancy.
By steadily releases the hormone progestogen into your bloodstream, the Injection prevents the release of an egg each month (ovulation).
It also thickens the cervical mucus, which makes it difficult for sperm to move through the cervix, and thins the lining of the womb so a fertilised egg is less likely to implant itself.

You can have the injection at any time during your menstrual cycle, as long as you're not pregnant.
If you have the injection during the first 5 days of your menstrual cycle, you'll be immediately protected against becoming pregnant.
If you have the injection on any other day of your cycle, you'll need to use additional contraception, such as condoms, for 7 days.


  • Last for between 8-13 weeks depending on the brand.
  • You do not have to think about contraception as long as the injection lasts.
  • May reduce heavy, painful periods for some women.


  • Some people struggle with weight gain.
  • Periods may stop, be irregular or last longer.
  • Periods and fertility may take some time to return to normal after stopping the injections.

(Perfect use means using the method correctly each time. Typical is when you do not always use it correctly)

As a fully qualified member of FMH, Gynäkologie Suisse, E.S.A.G. & ISCG
Dr Wagner is highly qualified and has many years of experience, allowing her to offer first-class advice and treatment of the highest standard in her boutique practice in the heart of Basel.

Don't hesitate to call +41 (0) 61 666 62 10 for an appointment, or book online today.