Caution is advised in pregnant women, as fetotoxic effects have been documented in rats and rabbits at doses exceeding 0.5 mg/kg, though no teratogenic effects have been observed (Jiangbo et al., 2009)
Japanese-made supplement with 5000mg Glutathione, 1000mg Collagen, 500mg Vitamin C, and 100mg Alpha Lipoic Acid
In addition, gastric acid and digestive enzymes can destroy glutathione, leading to its premature breakdown during digestion and limiting its bioavailability
Med Hypotheses 143 , 110185 (2020)
The pattern is consistent: peptides rich in polar residues such as arginine and lysine establish solution quickly in neutral water, while peptides carrying non-polar, lipophilic (fat-loving) side chains tend to aggregate
And when you do it that way, it should give you a 1:22concentration of about 100 milligrams per milliliter