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PrecisionTX works to first create a \u201cshrinkwrap-like\u201d effect by heating the collagen, and then over a longer period encourage the growth of new collagen

This method may help support nerve function more effectively, particularly where deficiency or functional low levels are suspected

Zirngibl et al., 2022)

Zebrafish neurobehavioral phenomics for aquatic neuropharmacology and toxicology research

Thus, supplemental citrulline is usually advisable, especially if you're training hard