Do turmeric and curcumin supplements contain significant amounts of oxalates? Can this increase my risk of kidney stones?
Yes, turmeric can contain a significant amount of oxalate, which can form calcium oxalate kidney stones (the most common type of kidney stone). However, some curcumin products (which are derived from turmeric) are believed to contain very little, if any, oxalates. For details, see the "Concerns and Cautions" section of Turmeric/Curcumin Supplements Review >>
See the Encyclopedia article about Kidney Stones for information about other supplements which may be helpful or harmful.