828 results
Methadone Drug-Drug Interactions
Meds that increase methadone metabolism/decrease methadone effect (INCREASED RISK FOR OPIOID WITHDRAWAL):
 • Phenytoin,
Methadone Drug-Drug ... that increase methadone ... metabolism/decrease methadone ... that decrease methadone ... #Drug #Interactions
Torsades de Pointes 
•Precipitated by drugs that prolong the QT interval 
•Class IA antidysrhythmics (procainamide, quinidine)
Precipitated by drugs ... Erythromycin •Methadone
Drug-Induced Prolonged QTc

QTc >500ms is an independent risk factor for developing Torsades des Pointes (TdP)
Drugs causing
Drug-Induced Prolonged ... Pointes (TdP) Drugs ... Prochlorperazine • Opioids: Methadone ... Kat_Watson #Drug
Rifampin Drug Interactions and Monitoring
Rifampin Drug Interactions of Major Clinical Significance:
Oral anticoagulants, Oral contraceptives, Cyclosporine, Digitoxin,
Rifampin Drug Interactions ... Monitoring Rifampin Drug ... Glucocorticoids, Methadone ... Verapamil Rifampin Drug ... Tocainide #Rifampin #Drug
Torsades de Pointes
• "Twisting of the pointes" 
• QRS axis swings from positive to negative direction
precipitated by drugs ... Azithromycin Methadone
False Positive Urine Drug Screens
Amphetamines - Amantadine, brompheniramine. bupropion, chlorpromazine, desipramine, ephedrine, isometheptene, isoxsuprine, labetalol, phentermine,
Positive Urine Drug ... promethazine, sumatriptan Methadone ... Positive #UDS #Urine #Drug
Medications that Can Cause False Positives on Drug Tests

Urine drug screens (UDSs) are simple to use,
False Positives on Drug ... Tests Urine drug ... false positives on drug ... doxylamine (Unisom) Methadone ... False #positive #drug
Summary of Agents Potentially Contributing to False Positives on Urine Drug Screens (UDS)
Marijuana Metabolites
 • dronabinol,
Positives on Urine Drug ... ibuprofen, naproxen Methadone
Recurrent Polymorphic VT/Torsades de Pointes - Management Algorithm
Drugs that prolong QT interval:
 • Class 1a (quinidine,
Management Algorithm Drugs ... • Cocaine • Methadone
Methadone.  Long half-life opioid originally developed in  1930s Germany.

#Pharmacology #Methadone #Methadose #Dolophine #Overview #Review
Methadone. ... #Pharmacology #Methadone ... #Methadose #Dolophine