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Semaglutide: Standard shelf life: 30-45 days refrigerated Maximum: 56 days (some clinical protocols allow) More stable than research peptides Pharmaceutical-grade formulations include additional stabilizers Tirzepatide: Standard shelf life: 30-45 days refrigerated Maximum: 56 days Similar stability to semaglutide Important note: Research chemical versions of semaglutide/tirzepatide may be less stable than pharmaceutical versions

N., & Khavinson, V

2021 Dec 11;398(10317):2160-2172

Since Dihexa (HGF pathway) and Semax (BDNF pathway) target independent neurotrophic systems, researchers hypothesize that combining them could produce additive or synergistic effects on synaptic density and cognitive performance