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Neither trial showed primary-endpoint benefit
Its role complements GHK-Cu: TB-4 helps position the repair cells, while GHK-Cu handles more of the matrix-building work
The addition of benzyl alcohol helps inhibit bacterial growth after the vial has been punctured, enabling multiple withdrawals using sterile technique and reducing the risk of contamination in multi-dose research applications
It can also be made in a lab and is often taken with other B vitamins
1 2 3 Vitamins in Animal and Human Nutrition (2nd ed.)
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