What are the side effects of the birth control shot?
Side effects of Depo-Provera Contraceptive Injection include: weight gain and other side effects such as irregular menstrual bleeding, amenorrhea, headache, nervousness, abdominal cramps, dizziness, weakness or fatigue, decreased sexual desire, leg cramps, nausea, vaginal discharge or irritation, breast swelling and
The birth control shot. The birth control shot, Depo-Provera, is a hormonal injection that prevents unplanned pregnancy for three months at a time. The hormone in this shot is progestin. If you have your shot on time without being late, there's a 1 in 100 chance you'll become pregnant during a given year.
- "Depo Provera can cause prolonged spotting (bleeding is usually light and not like a period), especially after the initial administration. The adjustment period is about three months. Usually after the initial dose, the spotting does stop and most women will either have no periods, or very light and short periods."
- Broadly speaking each progesterone contraception injection (Depo-Provera) will last for 10 to 12 weeks, after which there is not enough contraceptive left at the injection site to definitely prevent a pregnancy.
- If you get your first Depo-Provera shot later than five days after your period, you will need to use condoms for the first seven days following the shot. If you want to continue to use Depo-Provera for birth control, you must return for another shot in 11 to 12 weeks, but no later than 13 weeks.
Irregular Menstrual Bleeding. Many women stop using Depo Provera during the first year of use due to prolonged spotting or bleeding. These side effects are especially common during the first three months but can persist in some women for more than a year.
- Some research hints it might be caused by high-dose estrogen, but women in studies who took the progesterone-only shot Depo-Provera have also been found to have higher rates of breast cancer. "It is just not really clear," says Gaudet.
- Less serious side effects may include:
- irregular menstrual periods, changes in bleeding patterns or flow;
- breakthrough bleeding, or heavier menstrual bleeding during the first few weeks after device insertion;
- back pain;
- headache, nervousness, mild dizziness;
- nausea, vomiting, bloating;
- breast tenderness or pain;
- The birth control shot is a very effective method of birth control. Over the course of 1 year, fewer than 3 out of 100 typical couples who use the birth control shot every 3 months will have an accidental pregnancy. The chance of getting pregnant increases if you wait longer than 3 months to receive your next shot.
Updated: 2nd October 2019