What Is It?
A long-acting form of the hormone progestin, given by injection.
How Does It Work?
- Thickens cervical mucus, preventing sperm penetration
- Prevents ovulation
How Is It Used?
The woman is given an injection into the upper arm or buttocks every 3 months.
Effectiveness: Almost 100%
- Works for 3 months
- Failure rate increases if shot is not repeated every 3 months
Benefits:
- Works for 3 months
- Does not interfere with sex
- Can be used while breastfeeding
- Can be used by women with a history of seizures or sickle cell anemia
Possible Concerns:
- Need to return for shot every 3 months
- May cause irregular bleeding, spotting, missed periods or no periods
- Side effects may include weight gain, depression, breast tenderness, headaches or allergic reaction
- These side effects may last for up to 6 months after last injection
- May cause delay in ability to get pregnant after stopping shots
- May cause bone loss or density changes with long term use
DOES NOT REDUCE THE RISK OF HIV/AIDS OR STDs
