Full disclaimer 1.AOD-9604 is a 16-amino acid peptide fragment derived from human growth hormone (hGH residues 177-191) with added tyrosine, developed by Metabolic Pharmaceuticals for obesity treatment 2.Proposed mechanism: selective stimulation of lipolysis (fat breakdown) and inhibition of lipogenesis (fat formation) without growth hormone-like effects on IGF-1 or blood glucose 3.Failed Phase 2b clinical trial for obesity (2007)did not demonstrate statistically significant weight loss versus placebo, terminating clinical development for this indication 4.Received FDA "Generally Recognized as Safe" (GRAS) designation in 2023 as a food substance, but this is NOT a drug approval and does not establish efficacy for weight loss 5.Regulatory status: not FDA-approved as a drug, prohibited by WADA, and insufficient evidence for weight loss efficacy
Others prefer tablets or capsules but mention slower results

Vegan status unknown Unrecognized ingredients: quality-purity-potency-kirkland-signature-vitamin-b12-is-a-factor-in-the-maintenance-of-good-health-and-helps-the-body-to-metabolize-carbohydrates, at, vhelps-to-produce-red-blood-cells-helps-to-prevent-vitamin-b12-deficiency-non-gmo-no-starch-sweeteners, preservatives-vegetari-dosage, adults-19-years-and-older, dissolve-1-tab-der-the-tongue-once-daily, no-lactose-no-icial-each-tablet-contains, medicinal-ingredients-vitamin-b12, methylcobalamin, 1200-mc-non-medicinal-ingredients, alphabetical, croscarmellose-sodun-cospovidone, dimalic-acid, stewvg, vegetable-magnesium-stearate, warning, consult-a-health-care-practitioner-prior-to-use-if-you-are-pregnant-and-breastfeeding, store-between-15c-and-25c, out-of-the-reach-of-children-made-in-canada, fabrique-au-canada-vendor-1-888-446-8874-nutricorp-international, windsor-ontario-n8w-5b5-k2e-1c5, faisant-affaire-au-quebec-sous-le-nom-les-entrepots-costce-do-not-use-if-seal-under-cap-is-broken, manufactured-by, fabrique-par, uaux-for, pour, costco-wholesale-canada-ltd, 415-west-hunt-club-road, ottawa-onta-www-costco-ca-npn-80081901 Some ingredients could not be recognized

For another key nutrient in this space, see our guide on magnesium for anxiety and stress, which covers the GABA and parasympathetic pathways that complement what B12 does on the neurotransmitter side
Stimulation of collagen synthesis: GHK-Cu directly activates dermal fibroblasts, the cells responsible for collagen production