Case report on interaction of warfarin with herbal medicine “kadha”

Abstract

With the increase in the number of COVID-19 cases worldwide, and a lack of proper preventive and therapeutic treatment, herbal medicine is frequently used by many people to increase the immune status of the body. We describe a case of a 56 year-old-man stabilized on warfarin (7 mg daily) from 12 years, experienced an elevated international normalized ratio (INR) of 5.45 after the consumption of an Indian traditional herbal drink “kadha” as a precautionary measure to prevent COVID-19 infection.

Keywords

• Anticoagulants
• Warfarin
• Drug-herb interactions