Stalled Achilles rehab is frustrating, and a small pilot study suggests a 5 g/day collagen peptide supplement might help early progress. Over the first 3 months, the collagen group's VISA-A score rose 12.6 points versus 5.3 on placebo, with a clinically meaningful threshold of about 6.5. Everyone, however, was doing the same bi-daily calf-strengthening program, so exercise remains the backbone. Here's the protocol, the numbers, who it applies to, and why the 20-patient sample means we should stay cautious.
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