B12 plays a role in how your body processes fats and proteins, so a deficiency can leave you feeling sluggish
Topical protocol guidance Apply GHK-Cu serum or cream once to twice daily, to clean dry skin For anti-aging use: apply after cleansing, before moisturizer Allow 15-20 minutes before applying other actives Best results typically emerge after consistent use over 8-12 weeks Do not combine in the same session with strong vitamin C serums, AHAs, or retinoids Post-procedure use: apply after microneedling, laser, or peel procedures as directed by the provider Injectable protocols general reference Safety profile of GHK-Cu GHK-Cu has one of the best safety profiles of any peptide studied for aesthetic and regenerative use

Popular GLP-1 medications Some of the most well-known GLP-1 drugs include: Semaglutide: Sold under the names Ozempic and Wegovy by manufacturer Novo Nordisk Tirzepatide: Technically a dual GLP-1/GIP agonist, sold as Mounjaro and Zepbound, developed by Eli Lilly Liraglutide: Sold as Saxenda and Victoza (and generically), also manufactured by Novo Nordisk Forms of GLP-1 medications and FDA approval Injections : The name-brand medications listed above have all been FDA approved , but only in injectable form
On top of that, low B12 contributes to high homocysteine levels