When is the contraceptive injection effective? What side effects can contraceptive injections bring

What is a contraceptive needle?

The general contraceptive needle is composed of progesterone derivative medroxyprogesterone acetate (Mpa), which has many different therapeutic functions, one of which can be used to delay estrus and mating.

Each injection of 25-100mg of this drug can inhibit estrus for 2-4 months. This drug can also be taken orally, taking 5mg daily for five consecutive days. If you want to control your estrus for the long term, you can take 0.5-5mg orally twice a week.

2. How much is the contraceptive needle?

The contraceptive effect of the contraceptive needle can last for 3 months. Compared to the contraceptive pill, the contraceptive needle is more effective, and the unexpected pregnancy rate is only 3%. Contraceptive needles may cause skin spots or other adverse reactions.

Advantages: Very effective, only 4 injections per year are required.

Disadvantages: High cost, $240 per year, unable to effectively prevent sexually transmitted diseases, adverse reactions.

How to get a contraceptive injection?

The commonly used contraceptive needle in China is called a single progesterone contraceptive needle. Monoprogesterone, we are not unfamiliar with this name. Among many contraceptive pills, progesterone is the main ingredient. The contraceptive mechanism of contraceptive needles is to inhibit ovulation and change the uterine cavity environment. The usage is to inject once every 2-3 months.

The effect of a single progesterone contraceptive needle lasts for 2-3 months at a time, with an effective rate of over 99%. However, the disadvantage is that it takes some time to restore normal fertility after discontinuing the contraceptive needle. Usually, after 6 to 24 months of the last injection, there are side effects such as irregular bleeding, prolonged menstruation, and increased menstrual volume, leading to significant weight gain in some women. Its side effects are identical to those of long-term contraceptives: high levels of progesterone are stored in the body, which is not conducive to reversible changes and has a significant impact on the human cycle.

Each injection of a long-acting contraceptive needle requires professional medical staff from the hospital, so it is quite troublesome., Doctors rarely proactively recommend this method. The number of women who automatically choose long-term contraceptive needles is also significantly decreasing.

Side effects of contraceptive needles

1. Prolonged menstrual cycle and shortened menstrual cycle.

When the menstrual cycle is shorter than 20 days, it is called cycle shortening. The menstrual cycle is shortened after long-term contraceptive injection., Starting from the 10th day after injection, take the short acting contraceptive pill No.1 or No.2, 1-2 tablets per time, once a day, for 4-6 consecutive days. The menstrual cycle can be maintained at around 28 days.