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Stier H., Vos E., Kenley D
DSIP (Delta Sleep-Inducing Peptide) is a naturally occurring peptide that plays a vital role in regulating sleep patterns and promoting restful sleep
However, some researchers apply small amounts of reconstituted GHK-Cu topically to targeted areas
And the rat data here is extensive
Some symptoms may not show up for a few years until the deficiency worsens and affects other parts of your body
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