CNS depressants (eg, alcohol)
Use with caution because of additive CNS effects. CYP1A2 inducers (eg, cigarette smoking, rifampin)
May increase metabolic Cl of ropinirole. CYP1A2 inhibitors (eg, ciprofloxacin, erythromycin, fluvoxamine)
May decrease metabolic Cl of ropinirole. Dopamine antagonists (eg, butyrophenones, metoclopramide, phenothiazines, thioxanthenes)
May reduce effectiveness of ropinirole. Estrogen
May reduce Cl of ropinirole. Levodopa
Ropinirole mat potentiate dopaminergic adverse reactions of levodopa, and may cause or exacerbate preexisting dyskinesias. Warfarin
An increase in INR was reported in a patient stabilized on warfarin 9 days after starting ropinirole.
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