n-acetyl-l-carnitine hcl Nutricost Acetyl L-Carnitine HCI (ALCAR) 100 Grams per Container - 1G Per Serving Acetyl L-Carnitine 500 mg Capsules

GHK-Cu is not primarily a performance or injury-repair peptide

"GlyNAC supplementation in old mice improves brain glutathione deficiency, oxidative stress, glucose uptake, mitochondrial dysfunction." J Gerontol A Biol Sci Med Sci

According to manufacturer info, it's also a moisturizer and helps to make the product feel great on the skin

10.3389/fphar.2016.00518 105 MiyauchiS.GopalE.FeiY

(2017) trials both used oral formulations and still documented measurable brightening parenteral routes are expected to produce faster and more pronounced results based on bioavailability data

Walter RB, Milano F, Brasky TM, White E