Contraceptive injections contain a progestogen hormone which is similar to the natural progesterone that women produce in their ovaries. Learn more about the injections here
There are three types of injection. DepoProvera and Sayana Press protect you from pregnancy for 13 weeks. Noristerat protects you for eight weeks; it’s not commonly used in the UK.
The main way they work is to stop your ovaries releasing an egg each month (ovulation). They also:
The injection is most effective when used perfectly. It’s 99% effective at preventing pregnancy with perfect use and 94% effective with typical use.
You’ll need to have an injection once every 13 weeks if you have Depo-Provera or Sayana Press or once every eight weeks for Noristerat.
You can get this form of long-acting reversible contraception from a Spectrum Sexual Health clinic and some GP surgeries – Please check with your registered practice.
Spectrum Head Office
Wakefield Sexual Health
Barnsley Sexual Health
Wigan & Leigh Sexual Health