Overview
11 DESCRIPTION Rasagiline tablets contain rasagiline (as the mesylate), a propargylamine-based drug indicated for the treatment of idiopathic Parkinson's disease. Rasagiline mesylate is designated chemically as: 1H-Inden-1-amine, 2, 3-dihydro-N-2-propynyl-, (1R)-, methanesulfonate. The empirical formula of rasagiline mesylate is C 12 H 13 N∙CH 4 SO 3 and its molecular weight is 267.34.
Mechanism of Action
12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Rasagiline is a selective, irreversible MAO-B inhibitor indicated for the treatment of idiopathic Parkinson's disease. The results of a clinical trial designed to examine the effects of rasagiline on blood pressure when it is administered with increasing doses of tyramine indicates the functional selectivity can be incomplete when healthy subjects ingest large amounts of tyramine while receiving recommended doses of rasagiline. The selectivity for inhibiting MAO-B diminishes in a dose-related manner. MAO, a flavin-containing enzyme, is classified into two major molecular species, A and B, and is localized in mitochondrial membranes throughout the body in nerve terminals, brain, liver and intestinal mucosa.
Indications
- 1 INDICATIONS AND USAGE Rasagiline tablets are indicated for the treatment of Parkinson's disease (PD). Rasagiline Tablets, a monoamine oxidase (MAO)-B inhibitor (MAOI), is indicated for the treatment of Parkinson's disease ( 1 )
Common Doses
- 1 mg
- 0.5 mg
Dosage
2 DOSAGE AND ADMINISTRATION Monotherapy: Rasagiline Tablets 1 mg once daily (2.1) As adjunct without levodopa: Rasagiline Tablets 1 mg once daily (2.1) As adjunct to levodopa: Rasagiline Tablets 0.5 mg once daily. Increase dose to 1 mg daily as needed for sufficient clinical response (2.1) Patients taking ciprofloxacin or other CYP1A2 inhibitors: Rasagiline Tablets 0.5 mg once daily (2.2, 5.4) Patients with mild hepatic impairment: Rasagiline Tablets 0.5 mg once daily. Rasagiline Tablets should not be used in patients with moderate or severe hepatic impairment (2.3, 5.5) 2.
Contraindications
- 4 CONTRAINDICATIONS Rasagiline is contraindicated for use with meperidine, tramadol, methadone, propoxyphene and MAO inhibitors (MAOIs), including other selective MAO-B inhibitors, because of risk of serotonin syndrome [See Warnings and Precautions (5.2)] . At least 14 days should elapse between discontinuation of rasagiline and initiation of treatment with these medications. Rasagiline is contraindicated for use with St. John's wort and with cyclobenzaprine. Rasagiline is contraindicated for use with dextromethorphan because of risk of episode of psychosis or bizarre behavior.
Side Effects
- 6 ADVERSE REACTIONS The following adverse reactions are described in more detail in the Warnings and Precautions section of the label: Hypertension [ see Warnings and Precautions (5.1) ] Serotonin Syndrome [ see Warnings and Precautions (5.2) ] Falling Asleep During Activities of Daily Living and Somnolence [ see Warnings and Precautions (5.3) ] Hypotension / Orthostatic Hypotension [ see Warnings and Precautions (5.6) ] Dyskinesia [ see Warnings and Precautions (5.7) ] Hallucinations / Psychotic-Like Behavior [ see Warnings and Precautions (5.
Interactions
- 7 DRUG INTERACTIONS Meperidine: Risk of serotonin syndrome (4, 7.1) Dextromethorphan: Risk of psychosis or bizarre behavior (4, 7.2) MAO inhibitors: Risk of non-selective MAO inhibition and hypertensive crisis (4, 7.3) 7.1 Meperidine Serious, sometimes fatal reactions have been precipitated with concomitant use of meperidine (e.g., Demerol and other tradenames) and MAO inhibitors including selective MAO-B inhibitors [see Contraindications (4)] . 7.2 Dextromethorphan The concomitant use of rasagiline tablets and dextromethorphan was not allowed in clinical studies.