leuprolide, (Lupron, Lupron Depot, Lupron Depot-Ped) (cont.)

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Medical and Pharmacy Editor:

Testosterone promotes the growth of prostate cancer. Therefore, leuprolide is used in treating prostate cancer to slow the growth of the cancer. In children with central precocious puberty (puberty caused at an early age because of too much LH and FSH) leuprolide, by suppressing LH and FSH, reduces the levels of estrogen and testosterone and allows for more normal timing of puberty. Estrogens promote the growth of fibroids (benign tumors of the uterus) and areas of endometriosis (abnormal uterine tissue that exists outside of the uterus). Leuprolide is used to reduce the production of estrogen and treat both fibroids and endometriosis. The FDA approved leuprolide in April 1985.

PRESCRIPTION: Yes.

GENERIC AVAILABLE: Yes.

PREPARATIONS: Leuprolide injection: 5 mg/ml and 3.75 mg . Lupron Depot microspheres for injection: 3.75, 7.5, 15, 11.25, 22.5, 30, and 45 mg/vial.

STORAGE: Leuprolide should be stored at room temperature, between 15 C to 30 C (59 F to 86 F).

PRESCRIBED FOR: Leuprolide is used for the treatment of advanced prostatic cancer, endometriosis, fibroids, and central precocious puberty.

DOSING: Leuprolide is injected under the skin (subcutaneously). Lupron Depot is injected into muscle (intramuscularly).

For prostate cancer, leuprolide can be given daily or Lupron Depot can be given monthly or at 3 to 4 month intervals. The daily dose of leuprolide is 1 mg. The 3.5 and 7.5 mg doses of Lupron Depot are injected monthly, the 11.25 and 22.5 mg doses every three months, the 30 mg dose every four months, and the 45 mg dose every 6 months.

For endometriosis, the recommended dose of Lupron Depot is 3.75 mg monthly or 11.5 mg every 3 months. The recommended duration of treatment is 6 months.

Fibroids are treated with either a single 11.5 mg dose of Lupron Depot or 3.75 mg doses given monthly for up to 3 months.

The recommended starting dose of leuprolide for treating central precocious puberty is 50 mcg/kg/day. This dose can be increased by 10 mcg/kg/day depending on the response of the patient. Alternatively, Lupron Depot-Ped can be given at 7.5 mg (25 kg), 11.25 mg (25 to 37.5 kg), or 15 mg (>37.5 kg) intramuscular injection once a month. Alternatively 11.25 mg or 30 mg single dose can be administered every 3 months.

DRUG INTERACTIONS: No drug interaction studies have been done for leuprolide.

PREGNANCY: Leuprolide should not be administered to pregnant women because there is a high chance of harm to the fetus.

NURSING MOTHERS: The effects of leuprolide on the infant have not been studied in women who are breastfeeding.



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