l carnitine and taurine MycoHair, highest quality from Germany by MycoVital L-Carnitine vs Taurine for Dogs:

Moreover, riboflavin pathway derivatives, such as 5-(2-oxopropylideneamino)-6-d-ribitylaminouracil (5-OP-RU), 5-(2-oxoethylideneamino)-6-D-ribitylaminouracil (5-OE-RU) and 6,7-Dimethyl-8-(1-D-ribityl)lumazine (RL-6,7-diME), function as evolutionarily conserved non-peptidic antigens to a subpopulation of innate-like T cells, Mucosal Associated Invariant T (MAIT) cells, particularly enriched at mucosal surfaces of mammals, such as the gut, bronchea, skin and uterus 187,188,189

& Meade, B

Shortens the duration of colds and infections

Antioxidant balance plays a role in overall skin appearance

J Diabetes Res

taking NAC signals the body to produce more glutathione from available raw materials