recombinant glutathione s transferase S-Transferase from E. coli recombinant, expressed in E. coli, buffered aqueous solution larger fusion tags such as

Key trends include advancements in delivery science, with liposomal encapsulation, sustained-release antioxidant complexes, and synergistic nutrient stacks combining glutathione, NAC, ALA, vitamin C, and citrulline-malate gaining traction for enhanced cellular defense and performance recovery

Guzzo LS, Perez AC, Romero TR, Azevedo AO, & Duarte ID (2012)

In humans, hyperhomocysteine is related to cobalamin deficiency [52], whereas in dogs, homocysteine can be used mainly in the diagnosis of familiar cobalamin deficiency specifically in the Chinese Shar-Pei [53], but only after other diseases have been ruled out [54]

The other is because you were seeing adverse events. Neither is good news for BPC-157