Glutathione (Reduced?GSH) Appearance: White to off?white lyophilized powder Purity: ≥99% by HPLC, COA available for each batch Specifications: 5mg /10mg per sterile glass vial Storage: Unopened lyophilized powder store at ?20℃, avoid light and moisture. After reconstitution store at 2?8℃, use within 30 days, do not repeat freeze?thaw cycles.