igf 1 lr3 log IGF-1 (Bovine), Recombinant Protein, HEK293, Tag Free Recombinant Human LR3 IGF-I/IGF-1 GMP

The synthesis involves two steps

Lyophilized vs liquid stability Extremely stable Water removed = minimal degradation 2-3 years shelf life (refrigerated) 3-5 years (frozen) Can survive room temp short periods Liquid (reconstituted) : Much less stable Degradation begins immediately 28 days max with bacteriostatic water 1-3 days with sterile water Must stay refrigerated This is why peptides ship as powder : Stability during shipping, longer shelf life, easier storage

Forensic Sci Int 179, 23-33 (2008)

But there are significant downsides to supplementing HGH directly

This is the gold standard for peptide stacking in GH research