Life Extension Essential Youth L-Ergothioneine 5 mg - 30 Vegetarian Capsules
From Macy's
Ergothioneine is an amino acid that s widely distributed throughout your body, but levels have been shown to decline as we age. Your body can t produce it, so you must get it through your diet—it s found in a variety of food sources, but with the highest concentrations in certain types of mushrooms.