NEW Zealand regulator Medsafe has issued an alert around a drug-drug interaction observed with turmeric and warfarin.
A stabilised warfarin patient began taking a turmeric-containing product and within a few weeks the patient's INR increased to more than 10, a level at which there is a risk of serious bleeding.
Curcumin, an active ingredient in turmeric, is known to have anticoagulant activity.
Products containing turmeric/curcumin are marketed as dietary supplements for joint, digestive and cardiovascular support.
Medsafe said the warning does not apply to turmeric used in food.
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