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BRIEF: Can you give me some information about sheep sorrel?


QUESTION:
My pharmist looked up all the herbs, and said the sheep sorrel lvs. powder is not safe, (kidneys, liver) can you shed some info on this herb?

ANSWER:

Sheep sorrel tastes sour becuse it has a lot of oxalic acid in it. This can be toxic in several ways at high enough doses. When a couple of sprigs are used on a salad for flavor, there is not enough to hurt anybody, but there is a kind of oxalate toxicity that involves the kidneys, but I don't know if that relates to the doses you are contemplating.