The coarse flakes powder form of MSM is totally FREE of ANY additives (such as silicon dioxide)! MSM "coarse flakes" are Cardinal Nutrition's patented and superior form of MSM obtained by distillation instead of by crystallization. This technology ensures the highest quality of MSM on the market to-day, entirely free of any contaminants.
Ester-C® is an innovative form of vitamin C. It is patented, non-acidic vitamin C with metabolites, primarily threonate. It does not cause stomach upset or digestive problems ordinary vitamin C can cause.