Your glutathione vial is not a bad batch. Glutathione dissolves at 20 to 50 mg mL. When you add 2mL of water to a 600mg vial, that is 300 mg mL. The powder physically Your glutathione vial is not a bad batch. Glutathione dissolves at 20 to 50 mg mL. When you add 2mL of water to a 600mg vial, that is 300 mg mL. The powder physically Glutathione Peptide Foundry Premium Research Peptides Glutathione 1500mg 24Peptides Glutathione (1500 mg) Skin Brightening, Detox & Immune Support COA ELITE BIO COMPOUNDS Bacteriostatic Water for Injection: Package Insert Prescribing Info