Zeni Injection

Zeni Injection is used to prevent premature labor in pregnant women in order to reduce the risk of giving birth too early (preterm birth). It prevents miscarriage and lowers the risk of premature birth in women who have had one premature delivery in the past.

Zeni Injection is administered only by or under the supervision of a doctor. It should be taken as your doctor advice. Your doctor will decide how much you need to take and for how much time. You should take this injection for as long as it is prescribed for you.

The most common side effects of this medicine include local site reactions at the injection site, nausea, itching, diarrhea, and hives. If any of these bothers you, let your doctor know. There may be ways of reducing or preventing them. It may affect blood sugar levels, so monitor your blood sugar regularly. It is better to inform the doctor if you notice yellowing of eyes or skin, dark urine, or stomach pain while using this medicine.

Before taking this medicine inform doctor, if you have ever had any problems with your blood circulation or have diabetes, or any liver disease. Your doctor should also know about all other medicines you are taking as many of these may make this medicine less effective or change the way it works.

• Prevention of Premature Labor

Prevention of Premature Labor
Zeni Injection is a man-made, injectable form of the female hormone called progesterone, that helps lower the risk of delivering the baby too early (premature labor), particularly in women who have had this complication in an earlier pregnancy. Progesterone is a hormone that thickens the lining of the uterus and prepares it for the growth and development of the baby. So, it helps your uterus grow during pregnancy and also prevents any contractions that can otherwise lead to miscarriage.

Most side effects do not require any medical attention and disappear as your body adjusts to the medicine. Consult your doctor if they persist or if you’re worried about them

Common side effects of Eerise

• Injection site pain
• Injection site swelling
• Red spots or bumps

Your doctor or nurse will give you this medicine. Kindly do not self administer.

Zeni Injection is a progestin (female hormone). It works by modulating the immune response of the mother to prevent rejection of the embryo and allow its attachment to the uterus. This prevents miscarriage and helps lower the risk of premature birth in women who have had one premature delivery in the past.

• Zeni Injection is used in pregnant women to help lower the risk of giving birth too early (preterm birth).
• It is only given to a woman who has had a preterm delivery in the past.
• It is not for use in women who are pregnant with more than one baby (twins, triplets, etc.).
• It is administered only by or under the immediate supervision of your doctor. Your doctor can start giving you the injection every week between 16 and 20 weeks and continue through week 37, or until you deliver.
• It may affect blood sugar levels. Monitor your blood sugar regularly.
• Inform your doctor if you notice yellowing of eyes or skin, dark urine, or stomach pain. These could be symptoms of a serious liver problem.
• Inform your doctor immediately if you have pain in the chest, groin or legs, difficulty with breathing, sudden severe headache, slurred speech, sudden unexplained shortness of breath, a sudden loss of coordination, or vision changes while using this medicine.

Briggs GG, Freeman RK, editors. A Reference Guide to Fetal and Neonatal Risk: Drugs in Pregnancy and Lactation. 10th ed. Philadelphia, PA: Wolters Kluwer Health; 2015. pp. 671-72.

Mayo Clinic. Hydroxyprogesterone. [Accessed 03 Apr. 2019] (online) Available from:

Drugs.com. Hydroxyprogesterone. [Accessed 03 Apr. 2019] (online) Available from:

Chaves RG, Lamounier JA. Breastfeeding and maternal medications. J Pediatr (Rio J). 2004;80(5 Suppl):S189-S198. [Accessed 03 Apr. 2019] (online) Available from: