The contraceptive injection can impact your periods, causing them to be heavier, lighter, shorter or irregular. The majority of women who reviewed any brand of the injection at The Lowdown reported that it stopped their periods. Checkout our side effects section for more info.
How long does Noristerat take to work?
If you have the Noristerat contraceptive injection within the first 5 days of your menstrual cycle, you will be protected from pregnancy straight away. Any other time in your cycle and you'll need to use a barrier method (such as condoms) or other form of contraception for 7 days.
Does the Noristerat injection cause weight gain?
The contraception injection is the only form of injection which may cause weight gain in some women (although studies looking at this looked at Depo-Provera and Sayana Press rather than Noristerat). Whilst this might sound alarming, it's important to note that this doesn't happen for most women. Take a look at our user's reviews to find out how our community report the injection affects their weight. You can also find out more in our guide to contraception and weight.
How soon can I take my next dose of Noristerat?
Further doses of Noristerat should be given 8 weeks (and no later than 10 weeks to maintain the contraceptive effect) after the last dose.
How long does it take to get pregnant after stopping the Noristerat injection?
If you do not have your next injection, it is possible to get pregnant from 10 weeks after your last injection. Research on injectable contraceptives has shown there can be a delay in return of fertility for up to one year in some women. For more info on this, checkout our guide to contraception and return to fertility.
How the Noristerat injection works:
The Noristerat injection contains progestogen and is injected into your body every 2 to 3 months. It works to prevent pregnancy in three ways – by stopping ovulation, making the fluid in your cervix thicker (which makes it more difficult for sperm to enter the womb), and preventing the lining of your womb thickening enough for a fertilised egg to implant in it.
How to use the Noristerat injection:
Noristerat is injected either into either the arm or the buttocks and is typically done by your doctor. Noristerat is a thicker solution so you may find the injection is slightly more painful when it’s given. You'll need to have Noristerat injected once every 8 weeks to stay protected against pregnancy.
The injection can’t be removed from your body. If you have any side effects, you have to be prepared for them to continue during the 8 week period, and for some time afterward. For more information about the contraceptive injection, check out our complete guide.
How safe is the Noristerat injection:
The Noristerat injection is very safe. There are however some small risks associated with the injection. The injection can cause thinning of the bones because it affects your natural oestrogen levels. Thinning of the bones may be more of a problem if you already have risk factors for osteoporosis – if this is the case your doctor or nurse will probably advise you against the injection. In very rare cases you can have an allergic reaction to the injection and there is also a small risk of a reaction at the site the injection is given, which may cause irritation, swelling or a scar.
Evidence has also shown that the contraceptive injection is associated with an increase in weight in some people. For more information on this, you can read our guide to contraception and weight.
It's important to remember that it does not protect you from STIs.;