S-Methyl-L-cysteine is a natural product that acts as a substrate in the catalytic antioxidant system mediated by methionine sulfoxide reductase A (MSRA), with antioxidative, neuroprotective, and anti-obesity activities.
S-Methyl-L-cysteine (100 mg/kg) results in significant attenuation of plasma glucose, insulin, tumor necrosis factor-alpha, insulin resistance and improved antioxidant enzyme activities[1].
References:
[1]. Thomas S, et al. Effect of s-methyl-L-cysteine on oxidative stress, inflammation and insulin resistance in male wistar rats fed with high fructose diet. Iran J Med Sci. 2015 Jan;40(1):45-50.