OptiMSM (Bergstrom 4× distilled USA) canon · generic China 99% acceptable if certified purity.
4× distilled crystalline MSM purity 99.9%
Best for
Ideal use: OA · exercise · allergy · canon RCTs · guaranteed purity.
Advantages
Form of canon RCTs (Kim, Withee, Lee, Barrager). USA 4× distillation eliminates contaminants (pesticides, heavy metals). HPLC + GC-MS validated purity.
Disadvantages
Expensive vs generic (~€25-35/month 3 g/d). Premium mark-up for process.
Standard crystalline MSM powder 99% purity
Best for
Ideal use: budget · validate brand with analysis · GMP brands only.
Advantages
Affordable (~€10-15/month 3 g/d). Same CH3-SO2-CH3 molecule if certified purity. Premium generic brands (Now Foods, Solgar) acceptable quality.
Disadvantages
Heterogeneous quality between brands. Contamination risk if no HPLC + heavy metals analysis certified.
Ideal use: OA · exercise · allergy · canon RCTs · guaranteed purity.
Ideal use: budget · validate brand with analysis · GMP brands only.
OptiMSM (Bergstrom 4× distilled USA) canon · generic China 99% acceptable if certified purity.