He is blunt about online vendors: lots of these come from China, are fraught with heavy metals, and some have been tested to contain no actual peptide at all (source)
Avoid injecting directly into the tendon itself, as this can cause additional trauma
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Mark the 28-day discard date alongside the puncture date calculating it once at puncture is faster than recalculating at each use
The peptide appeared to promote migration of the tendon fibroblasts