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A lyophilized peptide that survives years in the freezer may last only weeks once reconstituted

Endoscopic or surgical intervention for painful obstructive chronic pancreatitis

L. I. Fedoreyeva, I. I. Kireev, V. Kh. Khavinson, and B. F. Vanyushin, Penetration of short fluorescence-labeled peptides into the nucleus in HeLa cells and in vitro specific interaction of the peptides with deoxyribooligonucleotides and DNA, Pleiades Publishing Ltd, Nov. 2011. doi: 10.1134/s0006297911110022

Freezing extends this to 90 days but requires aliquoting into single-use portions to avoid freeze-thaw damage

Peptides improve cellular signaling and efficiency, helping mitochondria produce more usable energy over time

Never freeze reconstituted peptides