Injectable contraceptives: What are the advantages and disadvantages?
How it works ?
Injectable contraceptives consist of injecting medroxyprogesterone acetate into the blood, a substance similar to progesterone produced by the body. This hormone prevents ovulation, causes thickening of the lining of the cervix, making it difficult for sperm to enter the uterus.
- The first injection is made only in the first 5 days of the menstrual cycle or after childbirth.
- The interval between intramuscular injections should not exceed 13 weeks. If this is the case, there will be a pregnancy test before the injection.
Most women must wait 6 to 8 months after the last injection, before ovulation returns.
What are the advantages ?
- Reversible and effective method of contraception
- Does not contain estrogen
- Does not require daily intake
- Menstruation stops or the amount of menstrual flow decreases
- Immediate contraceptive action (when injected within the first 5 days of the menstrual cycle)
- Reduces the risk of endometrial cancer and ovarian cancer
- Can be used in breastfeeding women
Does not affect the conduct of sexual relations
May reduce pain related to menstrual cramps
Are there any disadvantages?
May cause irregular bleeding
Obligation to schedule injections with the doctor.
May cause weight gain
Does not offer protection against STIs
Possibility of a decrease in bone mineral density
Return of fertility between 6 to 8 months after the last injection
Possibility of headache, nausea, dizziness, tenderness to the breasts, etc.
What are the risks of this method of contraception?
Contraceptive injections are not indicated for:
Those wishing to become pregnant immediately after stopping contraception
Those who have unexplained vaginal bleeding
People with cardiovascular problems, high blood pressure, liver disease or breast cancer.
Those who suffer from migraines accompanied by neurological symptoms
Women with a history of stroke, arterial or venous thrombosis.
Diabetic (accompanied by neuropathy, retinopathy or nephropathy)