The drug has been shown to increase the serum concentration or effects of theophylline, propranolol, and warfarin, although significant increase in prothrombin time is not obvious.
Additionally, the sparrow is known to have been poisoned by the rodenticide warfarin, though more research is needed to determine the effects of pesticides on the rufous-crowned sparrow.
A cost-effectiveness analysis found that dabigatran was more effective than warfarin for prevention of stroke in patients with atrial fibrillation and a history of prior stroke or transient ischemic attack.
