What are the side effects of injectable contraceptives?

Other possible side effects of the shot include:
  • nausea.
  • weight gain.
  • headaches.
  • breast tenderness.
  • depression.
  • slight bruising where the shot was given.
  • very rarely, a small, permanent dent in the skin where the shot was given.
A.

How effective is the injection birth control?

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. According to Planned Parenthood, when you receive it as directed, the shot is 99 percent effective.
  • Is it better to take birth control pills or the shot?

    Both the pill and the shot are very effective methods of birth control. When combination birth control pills are taken correctly, they are up to 99% effective in preventing pregnancy. The birth control shot (Depo-Provera) also is about 99% effective in preventing pregnancy (average annual failure rate is about 3%).
  • How long does it take for the shot to wear off?

    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.
  • Is the Depo shot effective immediately?

    If you get the birth control shot (also known as Depo-Provera) within the first seven days after the start of your period, you're protected from pregnancy immediately. Each shot will protect you from pregnancy for 12 weeks.
B.

How long does it take for the injection to work?

When it starts to work. You can have the injection at any time during your menstrual cycle, as long as you're not pregnant. If you have the injection during the first 5 days of your menstrual cycle, you'll be immediately protected against becoming pregnant.
  • Do you gain weight on the depo injection?

    Fact 2: The shot can lead to weight gain for some women. Here's what we have seen: the birth control shot (Depo-Provera) can cause weight gain for about a quarter of users. A recent study showed that, in the first six months of use, 1 out of 4 shot users gained 5 percent or more of their starting weight.
  • Can you get pregnant while on the shot?

    Here is some info for you : Pregant While On Depo-Provera Yes, the only protection that's 100% guaranteed is not having sex. It is possible to get pregnant with any other form of birth control. If you think you are pregnant, go see a doctor or take a home test.
  • How long does it take to get pregnant after the shot?

    For some women, it can take up to a year after the last shot to begin having regular periods, but for others it can happen as soon as four months after the last shot. In one large study, the average time to get pregnant after discontinuing Depo-Provera was ten months.

Updated: 20th September 2018

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