If you are currently being treated with any of the following medications, you should not use turmeric or curcumin in medicinal forms without first talking to your health care provider.

Blood-thinning medications: Tumeric may make the effects of these drugs stronger, raising the risk of bleeding. Blood-thinners include warfarin (Coumadin), clopidogrel (Plavix), and aspirin, among others.

Drugs that reduce stomach acid: Turmeric may interfere with the action of these drugs, increasing the production of stomach acid:

• Cimetidine (Tagamet)
• Famotidine (Pepcid)
• Ranitidine (Zantac)
• Esomeprazole (Nexium)
• Omeprazole
• Lansoprazole (Prevacid)

Drugs for diabetes (that lower blood sugar): Turmeric may make the effects of these drugs stronger, increasing the risk of hypoglycemia (low blood sugar).