NOW Glutathione is the best. I think it's only sold in the US but some shops have it. It is so effective. I used one bottle lang and my skin was whiter and glowing. Though I kinda overdose myself with that brand. You are just suppose to have 1 capsule a day which is 500mg. However, I had it three times a day so the result was faster. Up to now, my skin is still fair even if I don't use it anymore. Plus, it doesn't have bad side effects. Gluta is intended to make liver healthier and the side effect is that it whitens skin.