Disclaimer  Ginger is not suitable for pregnant or breastfeeding women, people with heart conditions and diabetes  should . DO NOT take ginger if you have a bleeding disorder or if you are taking blood-thinning medications, including aspirin. Blood thinners: Turmeric or curcumin supplements can increase the risk of bleeding in people taking warfarin. Immunosuppressive drugs: People taking a medication called tacrolimus may experience increased side effects if they consume high amounts of curcumin.