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LYRICA® CR, CV Drug Interactions (pregabalin extended-release)

7 DRUG INTERACTIONS

Since pregabalin is predominantly excreted unchanged in the urine, undergoes negligible metabolism in humans (less than 2% of a dose recovered in urine as metabolites), and does not bind to plasma proteins, its pharmacokinetics are unlikely to be affected by other agents through metabolic interactions or protein binding displacement. In vitro studies showed that pregabalin is unlikely to be involved in significant pharmacokinetic drug interactions [see Clinical Pharmacology (12)].

The interactions of LYRICA CR with co-administration of other drugs have not been systematically evaluated. Co-administration of the prokinetic drug erythromycin with LYRICA CR did not result in any clinically important changes in the pharmacokinetics of LYRICA CR [see Clinical Pharmacology (12)].

Additional studies have been performed with LYRICA. No pharmacokinetic interactions were observed between LYRICA and carbamazepine, gabapentin, lamotrigine, oral contraceptive, phenobarbital, phenytoin, topiramate, and valproic acid. A similar lack of pharmacokinetic interactions would be expected to occur with LYRICA CR.

Pharmacodynamics

Although no pharmacokinetic interactions were seen with LYRICA and ethanol, lorazepam, or oxycodone, additive effects on cognitive and gross motor functioning were seen when LYRICA was co-administered with these drugs. No clinically important effects on respiration were seen in studies of LYRICA.

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