Critical Rev Food Sci Nutr
Lyophilized powder is more stable and can be stored longer according to powder form storage protocols
Nilsson TK, Boman K, Jansson JH, Thgersen AM, Berggren M, Broberg A, Granlund A (2005) Comparison of soluble thrombomodulin, von Willebrand factor, tPA/PAI-1 complex, and high-sensitivity CRP concentrations in serum, EDTA plasma, citrated plasma, and acidified citrated plasma (Stabilyte) stored at -70 degrees C for 811 years
Glutathione is a requirement for processing and removing all the bad stuff from your body, which includes environmental contaminants and substances in food
Chronic uninterrupted use beyond 4 weeks lacks safety data