Research links GHK-Cu to collagen stimulation, elastin production, and improved skin elasticity
Mood-related symptoms of B12 deficiency include persistent irritability, low mood or emotional flatness that doesn't respond to typical coping strategies, restlessness, difficulty concentrating, and a general sense of being "off" that's hard to articulate
PMID: 32945357
Sublingual and oral forms show similar absorption in most research
Pick BPC-157 if: You have a localized overuse injury (tennis elbow, rotator cuff, jumper's knee) and want highly targeted healing You're recovering from a recent surgery and want to speed tendon or skin recovery at a specific site You need GI tract repair (oral BPC-157 for harsh orals, ulcer, leaky gut, IBD) You want a daily, low-side-effect peptide you can self-administer easily You're looking for a cost-effective entry point for healing peptides Pick TB-500 if: You have diffuse or systemic tendon/joint issues (multiple nagging sites, generalized aches) Injury covers a large area or involves chronic soft-tissue dysfunction (e.g