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When taking msm it is suggested that a vitamin C be taken also. MSM needs the vitamin C to help it build healthy cells.
It is recommended that you take at least 1/2 (one half) as much vitamin C as MSM, for example if you are taking 2000 mg of MSM you should take a minimum of 1000 mg of vitamin C.
VC2 - Vitamin C+ 250ct. 500mg capsules 