Turmeric / Curcumin Side Effects & Safety

Safety Profile

Potential Side Effects

• Mild GI discomfort (nausea, diarrhea, bloating) reported at doses above 1500mg, particularly without food
• Yellow staining of teeth, skin, and clothing with powder forms
• May increase oxalate levels — use caution in individuals with a history of calcium oxalate kidney stones
• Iron absorption may be modestly reduced with chronic high-dose use due to iron chelation
• Headache reported rarely, typically at higher doses

Drug & Supplement Interactions

• Blood thinners (warfarin, aspirin, clopidogrel) — curcumin has antiplatelet and mild anticoagulant activity; may increase bleeding risk
• Diabetes medications (metformin, sulfonylureas, insulin) — curcumin may lower blood glucose; monitor closely to avoid hypoglycemia
• Piperine/BioPerine drug interactions — piperine inhibits CYP3A4, CYP2D6, and P-glycoprotein, potentially increasing plasma levels of many medications including statins, SSRIs, and immunosuppressants
• Chemotherapy agents — curcumin may interact with certain chemotherapy drugs (both synergistically and antagonistically); always consult an oncologist before combining
• Pre-surgery — discontinue curcumin supplements 2 weeks before elective surgery due to antiplatelet effects

Maximum Dose