Lupron Depot 22.5
"By Peter Russell
WebMD Health News
Reviewed by Arefa Cassoobhoy, MD, MPH
They say the research could lead to better treatment, because doctors would be able to know which tumors are more likely to grow and spread."...
Lupron Depot 22.5
Isolated cases of worsening of signs and symptoms during the first weeks of treatment have been reported with LH-RH analogs. Worsening of symptoms may contribute to paralysis with or without fatal complications. For patients at risk, the physician may consider initiating therapy with daily LUPRON® (leuprolide acetate) Injection for the first two weeks to facilitate withdrawal of treatment if that is considered necessary.
Patients with metastatic vertebral lesions and/or with urinary tract obstruction should be closely observed during the first few weeks of therapy (see WARNINGS section).
Response to LUPRON DEPOT (leuprolide acetate for depot suspension injection) –3 Month 22.5 mg should be monitored by measuring serum levels of testosterone, as well as prostate-specific antigen and prostatic acid phosphatase. In the majority of patients, testosterone levels increased above baseline during the first week, declining thereafter to baseline levels or below by the end of the second week. Castrate levels were reached within two to four weeks and once achieved were maintained for as long as the patients received their injections.
Two-year carcinogenicity studies were conducted in rats and mice. In rats, a dose-related increase of benign pituitary hyperplasia and benign pituitary adenomas was noted at 24 months when the drug was administered subcutaneously at high daily doses (0.6 to 4 mg/kg). There was a significant but not dose-related increase of pancreatic islet-cell adenomas in females and of testicular interstitial cell adenomas in males (highest incidence in the low dose group). In mice no pituitary abnormalities were observed at a dose as high as 60 mg/kg for two years. Patients have been treated with leuprolide acetate for up to three years with doses as high as 10 mg/day and for two years with doses as high as 20 mg/day without demonstrable pituitary abnormalities.
Mutagenicity studies have been performed with leuprolide acetate using bacterial and mammalian systems. These studies provided no evidence of a mutagenic potential.
Clinical and pharmacologic studies in adults ( ≥ 18 years) with leuprolide acetate and similar analogs have shown reversibility of fertility suppression when the drug is discontinued after continuous administration for periods of up to 24 weeks.
Pregnancy, Teratogenic Effects
Pregnancy Category X (see CONTRAINDICATIONS section).
See LUPRON DEPOT (leuprolide acetate for depot suspension injection) -PED® (leuprolide acetate for depot suspension) labeling for the safety and effectiveness of the monthly formulation in children with central precocious puberty.
In the clinical trials for LUPRON DEPOT (leuprolide acetate for depot suspension injection) – 3 Month 22.5 mg, the majority (80%) of the subjects studied were at least 65 years of age. Therefore, the labeling reflects the pharmacokinetics, efficacy and safety of LUPRON DEPOT (leuprolide acetate for depot suspension injection) in this population.This monograph has been modified to include the generic and brand name in many instances.
Last reviewed on RxList: 6/2/2010
Additional Lupron Depot 22.5 Information
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