Hydroxyprogesterone Caproate is a synthetic progestin hormone used to help lower the risk of recurrent preterm birth.
Hydroxyprogesterone Caproate is commonly used for:
• Prevention of recurrent preterm birth: It has been used to help reduce the risk of recurrent preterm birth in selected pregnant women with a previous spontaneous preterm birth. Its use should follow current local guidelines and specialist advice.
• Support during pregnancy: Helps support pregnancy by promoting a uterine environment that is less likely to trigger early labour, although its exact mechanism is not fully understood.
This medicine is typically given as an injection starting in the second trimester of pregnancy and is used only under close medical supervision.
Injection site reactions
Urticaria
Pruritus
Nausea
Diarrhea
Hydroxyprogesterone Caproate is a synthetic form of the hormone progesterone.
Progesterone naturally rises during pregnancy to support the uterine lining and keep the uterus relaxed. By supplementing progesterone levels, this medicine helps maintain the uterine lining and reduces the frequency and strength of uterine contractions.
This supportive action helps to reduce the likelihood of the uterus contracting too early, lowering the risk of premature labour in women who have previously had a preterm birth.

Doctor of Medicine

BAMS, FMC, MD Resident
Hydroxyprogesterone Caproate is available as an injection intended for intramuscular administration.
The medication is usually administered into the muscle, typically in the upper outer quadrant of the buttocks.
This medicine is specifically meant for adult women who are pregnant and have a history of preterm birth.
Hydroxyprogesterone Caproate is contraindicated in individuals with a current or past history of thrombosis or thromboembolic disorders. It should not be used in cases of known or suspected hormone-sensitive cancers, such as breast cancer, or individuals with undiagnosed abnormal vaginal bleeding unrelated to pregnancy. Additionally, it is contraindicated in those with cholestatic jaundice of pregnancy, liver tumors or active liver disease, and uncontrolled hypertension.
Hydroxyprogesterone Caproate may interact with several medications, including corticosteroids (such as prednisone), anticoagulants (like warfarin), and certain anticonvulsants (such as phenytoin or carbamazepine).
As this medicine is given on a fixed weekly schedule by a doctor or nurse, contact your healthcare provider as soon as possible if you miss your scheduled appointment, so the next dose can be arranged promptly. Do not attempt to self-administer a missed or extra dose.
Most side effects are temporary and generally harmless and resolve when discontinuing this medicine. However, if you experience any severe side effects or worsening of any of the symptoms, please consult your doctor.
To manage nausea, try eating smaller, more frequent meals and avoid rich or fatty foods.
For injection site reactions such as pain or swelling, applying a cold compress can provide relief.
Hydroxyprogesterone Caproate does not typically affect the ability to drive or operate machinery. However, individual reactions can vary.
Hydroxyprogesterone Caproate is specifically indicated for use during pregnancy to help prevent preterm births. It is classified under Pregnancy Category B.
The medication is minimally excreted in breast milk and has not shown adverse effects on breastfed infants; however, it is advisable to consult your doctor before use during breastfeeding.
Caution should be used when administering this medicine to women with diabetes, depression, or a history of major mood disorders.
Obesity and age over 35 may also require cautious use and close monitoring during treatment with Hydroxyprogesterone Caproate.
Since Hydroxyprogesterone Caproate is used to manage risks associated with preterm birth, maintaining a healthy lifestyle during pregnancy is crucial.
Follow a balanced diet rich in fruits, vegetables, whole grains, and lean proteins to support overall health.
Adequate hydration is important; aim for at least eight glasses of water per day.
Regular prenatal check-ups are vital for monitoring the health of both mother and baby.
Frequently asked questions
Hydroxyprogesterone Caproate is used to manage the risk of preterm birth in women who have had a previous preterm birth.
It is given as an injection by a healthcare provider, typically into the upper outer quadrant of the buttocks.
No, Hydroxyprogesterone Caproate cannot stop preterm labor that has already started. It is used to manage the risk of preterm birth before it begins.
Rare but serious potential adverse effects include thrombotic events (blood clots), allergic reactions, jaundice, and depression. It is important to seek medical attention if you experience symptoms of these conditions while using this medicine.
There is no evidence suggesting it causes harm to the baby. It has been used for many years to help reduce the risk of preterm birth, but always discuss its benefits and risks with your doctor.
If you have a known allergy to progesterone or any ingredients in Hydroxyprogesterone Caproate, you should inform your doctor. They may suggest an alternative treatment.
Yes, weight gain can occur as a side effect due to fluid retention and hormone-related changes in the body. If you experience rapid or significant weight gain, consult your doctor.

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