Q1. How effective is the contraceptive injection?
Hormonal contraceptive injections are a highly effective form of contraception when used correctly.
The progestogen-only contraceptive injection usually provides protection for approximately 3 months, whilst the combined hormonal contraceptive injection usually provides protection for approximately 1 month.
Q2. What are the possible side effects of the contraceptive injection?
Possible side effects may include changes in body weight, mood changes or changes in menstrual pattern.
These symptoms may become milder after the first few months, although individual responses vary.
Q3. How soon does it become effective after injection?
If the injection is given within the first 1–3 days of the menstrual cycle, contraceptive protection usually starts immediately.
If it is given at another time in the cycle, additional contraception is generally recommended for the first 7 days after injection.
Q4. How soon can I become pregnant after stopping the injection?
Fertility usually returns within a few months after stopping the injection, but the timing varies from person to person.
The return of fertility after a progestogen-only contraceptive injection may take slightly longer than after a combined hormonal contraceptive injection.