What is Depo Provera?
Depo Provera, DMPA, birth control shot or simply “the shot” contains a progestin. This is similar to the hormone progesterone, which is naturally produced by the female body. DMPA is given by injection every 12 weeks and is slowly absorbed into the blood stream to prevent pregnancy. Depo-Provera is the brand name of DMPA.
How does DMPA work?
DMPA works by:
- preventing ovulation (egg release from the ovary)
- thickening of the mucus of the cervix so that sperm cannot enter the uterus (womb)
How effective is DMPA?
DMPA is up to 99% effective. This means that of 100 women using DMPA consistently over a year, it is possible that 1 woman may become pregnant.