Shell-based calcium: Calcium preparations that are prepared from seashells and oyster shells may contain toxic components, such as mercury, cadmium, and lead. Please check the USP mark on a supplement indicates that it meets governmental standards for purity and quality.
Answered 1/15/2015
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A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
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