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(levomethadyl acetate hydrochloride)
Due to its potential for serious and possibly life-threatening, proarrhythmic effects, LAAM should be reserved for use in the treatment of opiate-addicted patients who fail to show an acceptable response to other adequate treatments for opiate addiction, either because of insufficient effectiveness or the inability to achieve effective dose due to intolerable adverse effects from those drugs (see WARNINGS and Contraindications ).
Cases of QT prolongation and serious arrhythmia (torsade de pointes) have been observed during post-marketing treatment with ORLAAM (levomethadyl acetate) . Based on these reports, all patients should undergo a 12-lead ECG prior to administration of ORLAAM (levomethadyl acetate) to determine if a prolonged QT interval (QTc greater than 430 [male] or 450 [female] ms) is present. If there is a prolonged QT interval, ORLAAM (levomethadyl acetate) should NOT be administered. For patients in whom the potential benefit of ORLAAM (levomethadyl acetate) treatment is felt to outweigh the risks of potentially serious arrhythmias, an ECG should be performed prior to treatment, 12-14 days after initiating treatment, and periodically thereafter, to rule out any alterations in the QT interval.
ORLAAM (levomethadyl acetate) should be administered with extreme caution to patients who may be at risk for development of prolonged QT syndrome (e.g., congestive heart failure, bradycardia, use of a diurectic, cardiac hypertrophy, hypokalemia, or hypomagnesemia).
ORLAAM (levomethadyl acetate) is metabolized to active metabolites by the cytochrome P450 isoform, CYP3A4. Therefore, the addition of drugs that induce this enzyme (such as rifampin, phenobarbital, and phenytoin) or inhibit this enzyme (such as ketoconazole, erythromycin, and saquinavir) could increase the levels of parent drug or its active metabolites in a patient that was previously at steady-state, and this could potentially precipitate serious arrhythmias, including torsade de pointes (see PRECAUTIONS , Drug Interactions ).
CONDITIONS FOR DISTRIBUTION AND USE OF ORLAAM (levomethadyl acetate) (42 CFR Part 8)
ORLAAM (levomethadyl acetate) , used for the treatment of opiate addiction, shall be dispensed only by Opioid Treatment Programs (OTPs) certified by SAMHSA under 42 CFR Part 8, and registered by the Drug Enforcement Administration under 21. U.S.C. 823(g)(1). This does not preclude the maintenance or detoxification treatment of a patient who is hospitalized for medical conditions other than opiate addiction and who requires temporary maintenance for concurrent opiate addiction during the critical period of the patients hospitalization. Failure to abide by these requirements may result in injunction precluding operation of the program, revocation of the program approval, and possible criminal prosecution.
ORLAAM (levomethadyl acetate) has no recommended uses outside of the treatment of opiate addiction.
ORLAAM (levomethadyl acetate) (brand of levomethadyl acetate hydrochloride) is a synthetic opiate agonist. Chemically, it is levo-alpha-6- dimethylamino-4, 4-diphenyl-3-heptyl acetate hydrochloride, C 23 H 31 NO 2 · HCl. It is also known as levo-alpha-acetyl-methadol hydrochloride (LAAM).
The compound is a white crystalline powder, soluble in water (>15 mg/mL), ethanol, and methyl ethyl ketone. The octanol:water partition coefficient of LAAM is 405:1 at physiologic pH. Doses of ORLAAM (levomethadyl acetate) (LAAM) are always expressed as the weight of the hydrochloride salt (molecular weight 389.95).
ORLAAM (levomethadyl acetate) is an aqueous solution which is diluted for oral administration. Each one mL of ORLAAM contains: Levomethadyl acetate hydrochloride (LAAM) 10 mg. Inactive ingredients: Methylparaben, propylparaben, hydrochloric acid and water.
Last reviewed on RxList: 12/8/2004
This monograph has been modified to include the generic and brand name in many instances.
Additional Orlaam Information
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