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A 18-year-old member asked:

I'm taking 400 mg green tea supplements. will this cause me kidney stones?

2 doctor answers7 doctors weighed in
Dr. Stephen Chinn
Urology 38 years experience
Tea/Oxalates/stones: Tea is high in oxalic acid and could increase urinary excretion of oxalates resulting in ca++ oxalate stones. Hydration to achieve a urinary output > 2000ml/24 hours and avoiding salt/sodium may help to mitigate this situation and decrease crystallization/stone formation. Urinary acidifiers may also help..
Dr. Terence Chapman
Urologic Oncology 26 years experience
Not likely: Black tea contains oxalate and excessive levels of oxalate intake is associated with increased risk of calcium oxalate stone formation. Green tea has not been associated with increased risk of stone formation.

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Last updated Sep 28, 2016

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