TB-500 for chronic Achilles tendinopathy — 8 week update
Wanted to share my experience since there aren't many detailed TB-500 logs here. I'm a marathon runner with chronic Achilles tendinopathy that's plagued me for 2 years. Tried PT, eccentric exercises, shockwave therapy — marginal improvement at best. Started TB-500 at 5mg/week for the first 4 weeks (loading), then dropped to 2.5mg/week for maintenance. Injected subQ in the abdomen. Weeks 1-2: No noticeable change. Kept running easy miles. Weeks 3-4: Started noticing less morning stiffness. The first-step pain that used to be a 6/10 dropped to maybe a 3. Weeks 5-8: Steady improvement. I'm back to tempo runs without significant pain. Not 100% but honestly better than I've felt in over a year. Anyone else use TB-500 specifically for tendon issues? Curious how your timeline compared.
Replies (2)
This tracks with what we know about Thymosin Beta-4's mechanism. TB-500 promotes cell migration to injury sites and upregulates actin, which is critical for tissue repair. Tendons are notoriously slow to heal because of poor blood supply, so the 3-4 week delay before noticeable improvement makes sense — you're waiting for actual structural remodeling, not just anti-inflammatory masking. The loading/maintenance protocol you used is one of the more common approaches. Glad you're seeing results. Keep up the eccentric exercises alongside — the peptide and mechanical loading are synergistic.
Had almost identical results with a patellar tendon issue. Took about 3 weeks before I noticed anything, then improvement was steady. I stacked it with BPC-157 (250mcg 2x/day) which some people say accelerates things, though hard to know which one did the heavy lifting. Finished my protocol about 4 months ago and the improvement has held.