Contraceptive injection: what is it, how does it work and how to use it

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The contraceptive injection is a type of contraceptive method that can be indicated by the gynecologist, which consists of the application of an injection every month or every 3 months, with the objective of preventing the body from releasing eggs and making it last for the baby. uterine cuello becomes thicker, thus avoiding embarazo.

The injection must be applied intramuscularly by the gynecologist and it can be constituted only by progesterone or be a combination of progesterone and estrogen. In this way, some of the injectable contraceptives that can be indicated by the doctor are: Patector, Cyclofémina, Perlutal, Perludil, Patector NF, Cyclofem, Mesygina, Soluna, Nofertil, Depo-provera, Famy-Depo and Depotrim.

How it works

The injectable contraceptive works similarly to contraceptive pills. Due to its hormonal composition, it is capable of inhibiting the release of eggs, in addition to thickening the cervical spine and reducing the thickness of the endometrium, preventing the step of spermatozoides and, therefore, fertilization and embarrassment.

However, in spite of avoiding embarrassment, it is recommended to use condoms in all sexual relationships, as the contraceptive cannot be used to prevent sexually transmitted infections. Asimism, in case one of the applications is not carried out, there is a risk of embarrassment due to the decrease in the levels of circulating hormones.

monthly injectable contraceptive

The monthly injectable contraceptive must be applied until the 5th day after the beginning of the menstrual cycle and another dose must be taken at 30 days, since the application of the injection method, the levels of estrogen and progesterone will vary with time, That’s why these levels must be restored to have the contraceptive effect.

Despite the fact that this type of contraceptive is made up of progesterone and estrogen, the amount of progesterone is not high, which is why it is possible for women to have fewer side effects.

Find out how the monthly injectable contraceptive works.

Quarterly injectable contraceptive

Normally, the quarterly injectable contraceptive is composed only of progesterone, which is slowly absorbed by the body, guaranteeing the contraceptive effect for longer. This contraceptive can be applied until the 5th day after the beginning of the menstrual cycle and it works until 3 months in the woman’s organism, therefore it is necessary to carry out another application during this period, with the end of maintaining the moment. thicker neck and lessening the risks of embarrassment.

If this contraceptive has the advantage that it must be applied every 3 months, if the woman decides to be embarrassed, fertility returns very slowly, for general months after the administration of the last injection, apart from being associated with a major cant of side effects.

Find out how the quarterly injectable contraceptive works.

How to use the injectable contraceptive

The injectable contraceptive must be used according to the orientation of the gynecologist, varying according to the menstrual cycle of each woman and if she uses another contraceptive method.

For women who have a normal menstrual cycle and do not use pills without another contraceptive injection, the first application can be taken until the 5th day after the start of menstruation and the following should be administered every 30 days, between a range of 3 days before or 3 days after, regardless of menstruation. This is because, if there is a delay of more than three days of the new injection, you should tell the woman to use a condom.

To start the injections after childbirth, the woman must receive it between the 21st and the 28th day after the birth of the baby; and to start using them when having an abortion or after having taken the pill for the next day, the injection can be administered immediately.

You can also apply the first injection the same day you decide to change the contraceptive pills or quarterly injection. However, if the woman did not use a contraceptive method before and had sexual relations, it is necessary to carry out the embarazo prueba before receiving the injection.

Know how to change contraceptives without running the risk of falling embarassed.


The injection of the monthly contraceptive is not indicated in women with hypersensitivity to any component of the formula, those who are pregnant, breastfeeding until 6 weeks after childbirth, those who have current breast cancer or suspect a hormone receptor tumor. Also, tampoco is indicated in women who have severe headaches with focal neurological symptoms, severe hypertension, vascular disease or a history of thrombophlebitis, thromboembolic disorder, ischemic heart disease or complicated valvular heart disease.

The tampoco injection should be used in women suffering from diabetes with nephropathy, retinopathy, neuropathy or another vascular disease, diabetes lasting more than 20 years, systemic lupus erythematosus with positive antiphospholipid antibodies, history of liver diseases, those that have been performed A major surgery with prolonged immobilization, which suffers from abnormal uterine or vaginal bleeding, which is smoked more than 15 cigarettes a day, with age over 35 years.

Main side effects

The injection of the monthly contraceptive can generate the onset of pain in the breasts, nausea, vomiting, headache, seas and weight gain.

In addition, menstrual alterations can arise, such as profuse bleeding, and in these cases, the woman must be evaluated by a gynecologist to carry out exams with the purpose of identifying if there is any other cause for this alteration, such as pelvic inflammatory disease, for example. . If there is no apparent cause for the bleeding, and the woman is not comfortable with this method, it is advisable to replace this injection with another contraceptive method.

Verified by RJ9823 – Public Utility – cc2.0

Consult a Doctor | Translated by User2937

Content for educational purposes only

The translator user relied on the following text:

Tua Saude Website – REF93782 – Verified

Disclaimer – (English version>) This content has been prepared based on information from research, additional publications, or the translation/verification work of a volunteer editor of this web council. This is a non-profit service. It is strongly recommended that all details and information published be carefully verified. We never allow medication recommendations, medication package inserts or any medication guidance. We never allow partisan politics as information.

Isenção de responsabilidade – (versão em português): Este conteúdo foi preparado com base em informações de pesquisas, publicações adicionais ou no trabalho de tradução/verificação de um editor voluntário deste conselho web. Este é um serviço sem fins lucrativos. É altamente recomendável que todos os detalhes e informações publicadas sejam verificadas cuidadosamente. Nunca permitimos recomendações de medicamentos, bulas ou qualquer orientação sobre medicamentos. Nunca permitimos a política partidária como base para checagem. Para mais informações, leia nossos termos.

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