Choriogonadotropin Alfa

Generic Name: choriogonadotropin alfa

Over-the-Counter (OTC)

Brand Names:

Pregnyl

DESCRIPTION Chorionic gonadotropin, a gonadotropin, is a polypeptide hormone produced by the human placenta and obtained from the urine of pregnant persons. Chorionic gonadotropin is a purified preparation composed of an alpha and a beta subunit. The alpha subunit is essentially identical to the alpha subunits of the human pituitary gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), as well as to the alpha subunit of human thyroid-stimulating hormone (TSH).

Overview

DESCRIPTION Chorionic gonadotropin, a gonadotropin, is a polypeptide hormone produced by the human placenta and obtained from the urine of pregnant persons. Chorionic gonadotropin is a purified preparation composed of an alpha and a beta subunit. The alpha subunit is essentially identical to the alpha subunits of the human pituitary gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), as well as to the alpha subunit of human thyroid-stimulating hormone (TSH).

Uses

INDICATIONS AND USAGE HCG HAS NOT BEEN DEMONSTRATED TO BE EFFECTIVE ADJUNCTIVE THERAPY IN THE TREATMENT OF OBESITY. THERE IS NO SUBSTANTIAL EVIDENCE THAT IT INCREASES WEIGHT LOSS BEYOND THAT RESULTING FROM CALORIC RESTRICTION, THAT IT CAUSES A MORE ATTRACTIVE OR “NORMAL” DISTRIBUTION OF FAT, OR THAT IT DECREASES THE HUNGER AND DISCOMFORT ASSOCIATED WITH CALORIE-RESTRICTED DIETS. Prepubertal cryptorchidism not due to anatomical obstruction. In general, hCG is thought to induce testicular descent in situations when descent would have occurred at puberty. hCG thus may help predict whether or not orchiopexy will be needed in the future. Although, in some cases, descent following hCG administration is permanent, in most cases, the response is temporary.

Dosage

DOSAGE AND ADMINISTRATION For intramuscular use only. Each multiple-dose vial is to be used for one patient. The dosage regimen employed in any particular case will depend upon the indication for the use, the age and weight of the patient, and the physician’s preference. The following regimens have been advocated by various authorities: Prepubertal cryptorchidism not due to anatomical obstruction. Generally, institute therapy in children between the ages of 4 and 9. 4000 USP units 3 times weekly for 3 weeks. 5000 USP units every second day for 4 injections. 15 injections for 500 to 1000 USP units over a period of 6 weeks. 500 USP units 3 times weekly for 4 to 6 weeks. If this course of treatment is not successful, another series is begun 1 month later, giving 1000 USP units per injection.

Side Effects

ADVERSE REACTIONS For males and females: Immune system disorders Hypersensitivity reactions, both localized and systemic in nature, including anaphylaxis have been reported. In rare cases, generalized rash or fever may occur (see CONTRAINDICATIONS and WARNINGS ). If a hypersensitivity reaction is suspected, discontinue PREGNYL and assess for other potential causes for the event. Psychiatric disorders Irritability Restlessness Depression Nervous system disorders Headache General disorders and administration site conditions PREGNYL may cause reactions at the site of injection, such as bruising, pain, redness, swelling and itching. Occasionally, allergic reactions have been reported, mostly manifesting as pain and/or rash at the injection site (see CONTRAINDICATIONS and WARNINGS ).

Warnings

WARNINGS Use hCG in conjunction with gonadotropin therapy only if the physician is experienced with infertility problems and is familiar with the criteria for patient selection, contraindications, warnings, precautions, and adverse reactions described in the package insert for gonadotropins. Gonadotropin therapy, including hCG, requires a certain time commitment by physicians and supportive health professionals, and requires the availability of appropriate monitoring facilities (see PRECAUTIONS/Laboratory Tests ). Safe and effective induction of ovulation with use of PREGNYL requires monitoring of ovarian response with serum estradiol and transvaginal ultrasound on a regular basis. Anaphylaxis Anaphylaxis has been reported with urinary-derived hCG products. CONTRAINDICATIONS Prior hypersensitivity reactions to human gonadotropins, including hCG, or any of the excipients (see ADVERSE REACTIONS ). High serum FSH, indicating primary gonadal failure in women. Presence of uncontrolled non-gonadal endocrinopathies (e.g., thyroid, adrenal, or pituitary disorders).

Pregnancy

Pregnancy PREGNYL is not indicated in pregnancy. PREGNYL may be used for luteal phase support, but is discontinued upon confirmation of pregnancy. There are no data on the use of hCG in pregnancy. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively.

Storage

Storage: Store unopened vial at controlled room temperature 15°C to 25°C (59°F to 77°F). If reconstituted solution in vial is not used immediately, then store refrigerated [2°C to 8°C (36°F to 46°F)] until use and discard after 60 days. Do not shake. Do not freeze.

Frequently Asked Questions

What is Choriogonadotropin Alfa used for?

INDICATIONS AND USAGE HCG HAS NOT BEEN DEMONSTRATED TO BE EFFECTIVE ADJUNCTIVE THERAPY IN THE TREATMENT OF OBESITY. THERE IS NO SUBSTANTIAL EVIDENCE THAT IT INCREASES WEIGHT LOSS BEYOND THAT RESULTING FROM CALORIC RESTRICTION, THAT IT CAUSES A MORE ATTRACTIVE OR “NORMAL” DISTRIBUTION OF FAT, OR THAT IT DECREASES THE HUNGER AND DISCOMFORT ASSOCIATED WITH CALORIE-RESTRICTED DIETS. Prepubertal cryptorchidism not due to anatomical obstruction. In general, hCG is thought to induce testicular descent in situations when descent would have occurred at puberty. hCG thus may help predict whether or not orchiopexy will be needed in the future. Although, in some cases, descent following hCG administration is permanent, in most cases, the response is temporary.

What are the side effects of Choriogonadotropin Alfa?

ADVERSE REACTIONS For males and females: Immune system disorders Hypersensitivity reactions, both localized and systemic in nature, including anaphylaxis have been reported. In rare cases, generalized rash or fever may occur (see CONTRAINDICATIONS and WARNINGS ). If a hypersensitivity reaction is suspected, discontinue PREGNYL and assess for other potential causes for the event. Psychiatric disorders Irritability Restlessness Depression Nervous system disorders Headache General disorders and administration site conditions PREGNYL may cause reactions at the site of injection, such as bruising, pain, redness, swelling and itching. Occasionally, allergic reactions have been reported, mostly manifesting as pain and/or rash at the injection site (see CONTRAINDICATIONS and WARNINGS ).

Can I take Choriogonadotropin Alfa during pregnancy?

Pregnancy PREGNYL is not indicated in pregnancy. PREGNYL may be used for luteal phase support, but is discontinued upon confirmation of pregnancy. There are no data on the use of hCG in pregnancy. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2% to 4% and 15% to 20%, respectively.

What are the important warnings for Choriogonadotropin Alfa?

WARNINGS Use hCG in conjunction with gonadotropin therapy only if the physician is experienced with infertility problems and is familiar with the criteria for patient selection, contraindications, warnings, precautions, and adverse reactions described in the package insert for gonadotropins. Gonadotropin therapy, including hCG, requires a certain time commitment by physicians and supportive health professionals, and requires the availability of appropriate monitoring facilities (see PRECAUTIONS/Laboratory Tests ). Safe and effective induction of ovulation with use of PREGNYL requires monitoring of ovarian response with serum estradiol and transvaginal ultrasound on a regular basis. Anaphylaxis Anaphylaxis has been reported with urinary-derived hCG products. CONTRAINDICATIONS Prior hypersensitivity reactions to human gonadotropins, including hCG, or any of the excipients (see ADVERSE REACTIONS ). High serum FSH, indicating primary gonadal failure in women. Presence of uncontrolled non-gonadal endocrinopathies (e.g., thyroid, adrenal, or pituitary disorders).

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Medical Disclaimer

This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.