TB‑500 vs TB4‑Frag for hamstring tendon recovery: dosing and timing question

Posted by casey613 in Healing & Recovery - 1 points, 0 comments.

I tore my right hamstring about two months ago after a sprint in the training hall and have been cycling through a low‑dose TB‑500 regimen (2 mg twice a week for the first two weeks, then 1 mg weekly) while staying mobile, but the tendon still feels stiff and the pain flares up when I run on the track – it’s like a lingering ghost. I’ve read that the full‑length Thymosin Beta‑4 can be as effective as TB‑500, but I also saw some posts about the TB4‑Frag fragment (200–500 µg daily or every other day) offering quicker tissue penetration and less injection site irritation. For my rehab I’d love to know if switching to TB4‑Frag would give a faster improvement in flexibility or if the full‑length peptide might be better for sustained tendon healing over three months.

What dosing, frequency, and timing do people find most reliable for tendon recovery, especially after an ACL reconstruction or a severe hamstring strain? Any personal anecdotes or observations about injection site reactions and fatigue would be appreciated.

Community discussion - research and educational context only. Not medical advice.