How Long Does A Contraceptive Injection Takes To Work Effectively?

The contraceptive injection can be administered at any time during a woman's menstrual cycle though different times will mean different lengths of time before it starts to work. Ideally, the injection is given within five days of a woman's period which means that it is effective immediately. If the injection is received any time after the fifth day, other contraception such as condoms will be required for up to 7 days.

• How does it work?

The contraceptive injection works in the same way as the pill only with this, you don't have to worry about taking a pill every day at a specified time. The injection can be effective for either twelve or eight weeks and works by thickening the mucus in the cervix and preventing ovulation. This form of contraception is very reliable being at 99 percent effective and has been used since the sixties.

• There are many advantages to the injection. These include:

It does not interrupt sex.
You don't have to be concerned about contraception.
It works for women that can't use other methods of contraception.
It can alter periods which is very useful for women who suffer heavy and uncomfortable periods.
It is safe to be used alongside breastfeeding.

• There are however some disadvantages. These include:

Mood changes, increased appetite and headaches.
It cannot be removed once given.
It can take longer than stated to wear off.
Although it can be beneficial to people who suffer a lot from uncomfortable periods, it can alter periods for the worst.

If your on your period when it is injected, it starts to work straight away x

A week as is takes awhile for the hormones to be released it does not take 2-3 days or 2hours as my doctor told me so do not belive this.

Two to three days

As soon as you get the contraceptive injection you can enjoy sex after 2 hours