Hormonal injections refer to a form of contraception where specific hormones are injected into a woman’s body to stop egg production. A popular alternative to pills, hormonal injections contain progestogen to thicken the mucus of the cervix. These hormones also thin the lining of the uterus which can stop the womb from releasing an egg. The injections are 99% effective in preventing unwanted pregnancies. However, they do offer no protection from sexually transmitted diseases.
Hormonal injections can last from eight to thirteen weeks depending on the specific type of hormones. These can be quite a helpful alternative to women who are prone to forgetting their contraceptive pills. These injections are also suited to women who can’t use estrogen for medical reasons. Unlike some contraceptive pills, hormonal injections are not affected by other forms of medication.
This form of birth control does come with a few side effects such as mood swings, headaches, weight gain, irregular menstrual bleeding, and breast tenderness. According to the NHS, hormonal injections can also trigger amenorrhea.