C4: C4 is a supplement mixture with no data to support its use. Multivites, fish oil and calcium supplements have at least some reason to think they will be a positive action. I personally wouldn't recommend taking C4 but have no more data support not recommending it than there is to say it is beneficial. Eat a good diet and have a good exercise program, the supplements might or might not help.
Answered 2/13/2015
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