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doi: 10.2147/HMER.S428161 5 ZhouWChengXZhangY

It was first characterized by Predrag Sikiric and colleagues at the University of Zagreb in the early 1990s, and a 2025 literature and patent review cataloged its effects across gastrointestinal, musculoskeletal, and neural models

Since B12 plays a role in reducing homocysteine levels and promoting heart health, it may indirectly support erectile function by improving circulation and vascular health

KEY INGREDIENTS How it works GHK-Cu (Copper Peptide) A protein that responds to tissue injuries by activating blood vessel growth and anti-inflammatory agents

If they are not working, these byproducts could build up

In the research literature and in usage reports, DSIP is employed in comparatively low microgram quantities