daily requirement of glutathione Glutathione: Benefits and Supplements Read "Dietary Reference Intakes: The

It is found that increase glutathione interacts with melanin production, the main pigment resulting in pigmentation of the skin and darker skin tone

Liposomes: an emerging carrier for targeting Alzheimers and Parkinsons diseases

Otsuka, M., Kato, N., Ichimura, T., Abe, S., Tanaka, Y., Taniguchi, H., Hoshida, Y., Moriyama, M., Wang, Y., Shao, R., Narayan, D., Muroyama, R., Kanai, F., Kawabe, T., Isobe, T., & Omata, M

O'Connor 2015

Quick Answer: Neither is objectively "better" because they serve different functions

That said: human data remains limited, sample sizes are small, and no studies have directly compared direct glutathione supplementation against precursor approaches on meaningful clinical endpoints