is glutathione a peptide L-Glutathione 500mg

The absorption of vitamin B12 depends on a protein produced in your stomach, called intrinsic factor

Features Major Ingredients Aqua , Malachite Extract , Glycosyl Trehalose , PPG-12-Buteth-16 , "Ammonium Acryloyldimethyltaurate/VP Copolymer" , Chlorphenesin , Panthenol , -Tocopherol , Ammonium Glycyrrhizate , Polysorbate 60 , o-Cymen-5-ol , Allantoin , Dipotassium Glycyrrhizate , Mannitol , Betaine , Raffinose , Sodium Hyaluronate , Copper Tripeptide-1 , Tetrasodium EDTA , Aesculus Hippocastanum Extract , Caffeine , Fragrance , Zinc Gluconate , Hydrolyzed Hyaluronic Acid , Tremella Fuciformis Sporocarp Extract , Butylene Glycol , Alteromonas Ferment Extract Ingredients subject to change at manufacturer's discretion

It is not a medicine, medical device, or a product intended for human or veterinary use, diagnosis, treatment, or consumption

Because injections are thought to be cumbersome, and painful, and expensive