glutathione orally effective for skin whitening Augmented Absorption from Oral Mucosa and its Effect on Pigmentation: A Clinical Review Glutathione Tablets For Skin Whitening:

GHK-Cu (Copper Tripeptide-1)

Consider: daily multivitamin, vitamin D 2,000-4,000 IU daily (most people are deficient), vitamin B12 if energy is low, calcium 1,000-1,200mg daily (especially for women), fiber supplement if constipated, protein powder if struggling to hit 80-100g daily from food

The influence of a novel pentadecapeptide, BPC 157, on N(G)nitroLarginine methylester and Larginine effects on stomach mucosa integrity and blood pressure

Lions mane (Hericium erinaceus), an edible mushroom that raises nerve growth factor in animal studies, has human evidence that, while from small and short trials, includes real positive signals, such as faster processing on a Stroop task in healthy adults and earlier improvement in people with mild cognitive impairment