Dosage Form: Injection
- Indicated for reducing the risk of preterm birth in women with a singleton pregnancy who have a history of singleton spontaneous preterm birth
- Indicated for prevention of preterm labor in a singleton pregnancy for patients aged 16 years or older who have a history of spontaneous preterm birth
The mechanism by which progesterone prevents preterm birth is not well understood, but many pathways are likely involved. (1) Progesterone plays a vital role in regulation of the female reproductive system and is important for successful implantation of the embryo and maintenance of pregnancy. It acts by binding to progesterone receptors in the uterus, ovaries, breasts and in the central nervous system. These receptors exist in 2 isoforms, PR-A and PR-B. Progesterone binding to these receptors ultimately leads to regulation of gene transcription. (2) This results in an anti-inflammatory effect which blunts the proinflammatory state that occurs with initiation of labor, and maintains uterine queiscence by stabilizing progesterone acting on the myometrium.
Administer intramuscularly at a dose of 500 mg or 250 mg once weekly. Begin treatment between 16 weeks, 0 days and 20 weeks, 6 days of gestation. Continue administration once weekly until week 37 (through 36 weeks, 6 days) of gestation or delivery, whichever occurs first.
Route of administration: Intra muscular
No data available.
- Current or history of thrombosis or thromboembolic disorders.
- Known or suspected breast cancer, other hormone-sensitive cancer, or history of these conditions.
- Undiagnosed abnormal vaginal bleeding unrelated to pregnancy.
- Cholestatic jaundice of pregnancy.
- Liver tumors, benign or malignant, or active liver disease.
- Uncontrolled hypertension.
Most Common: Injection site reactions (pain, swelling, pruritus, nodule), Hives, Itching, nausea, and diarrhea. Call your doctor if you get any of the symptoms below:
- Blood clots Symptoms: Leg swelling, Redness in your leg, a spot on your leg that is warm to touch, Leg pain that worsens when you bend your foot.
- Allergic reactions: Hives, Itching, Swelling of the face.
Pregnancy & Lactation:
Pregnancy: Category B. No adequate and well-controlled studies in women during first trimester of pregnancy. Teratogenic risks to infants following in utero exposure to the drug not demonstrated in a study of pregnant women receiving the drug during their second and third trimesters, as well as in a follow-up safety study of their infants. Not intended to stop active preterm labor; effect of drug for this use unknown.
Lactation: Detectable amounts of progestins identified in the breast milk of women receiving progestins. No adverse effects of progestins on breastfeeding performance or on health, growth, or development of infants, Discontinue drug at 37 weeks of gestation or upon delivery.
Precautions & Warnings:
- Thromboembolic disorders: Discontinue if thrombosis or thromboembolism occurs. Allergic reactions: Consider discontinuing if allergic reactions occur.
- Decreased glucose tolerance: Monitor pre-diabetic and diabetic women receiving Caprogen.
- Fluid retention: Monitor women with conditions that may be affected by fluid retention, such as pre-eclampsia, epilepsy, cardiac or renal dysfunction.
- Depression: Monitor women with a history of clinical depression; discontinue Caprogen if depression recurs.
- Jaundice: Carefully monitor women who develop jaundice while receiving Caprogen and consider whether the benefit of use warrants continuation.
- Hypertension: Carefully monitor women who develop hypertension while receiving Caprogen and consider whether the benefit of use warrants continuation.
Hormone preparations for other uses
Store at controlled room temperature between 15°C to 30°C. Protects from light. Keep out of the reach of children.
Manufactured by: Nuvista Pharma Ltd.