Depo-Provera starts to work as a contraceptive immediately if given within the first 5 to 7 days of the menstrual period. If the injection is received at any other time during the cycle, it may take up to 7 to 10 days to become effective, during which additional contraception like condoms should be used. This timing ensures the prevention of ovulation effectively to avoid pregnancy.
Details
- If Depo-Provera is given within the first 5 days of the menstrual period, protection is immediate.
- If given beyond that, users should use backup contraception for about 7 days.
- The injection prevents pregnancy primarily by stopping ovulation and thickening cervical mucus.
- For safety, if the shot is administered later in the cycle or if there is any risk of pregnancy, a backup method for the first week after injection is advised.
- Consistent injections every 12-14 weeks are necessary to maintain contraceptive effectiveness.
This timing is generally recommended to ensure full contraceptive protection starting soon after the shot is given.
