7 Best Glutathione Supplements For Cellular Health The Good Trade Glutathione Collagen 0.53 oz. (1.5g) x 30packets CELLREON Collagen vs Glutathione which one should YOU choose? Let's decode it in under 30 seconds Collagen = The Builder Strengthens your skin's structure, smooths fine lines, and boosts The best glutathione supplement is the one that works for your body. Sounds simple, doesn't it? But regular, run of the mill oral glutathione is only absorbed by the body at about 3 5%