Real-World Use, Dosing, and Reported Side Effects of BPC-157 and TB-500 for Musculoskeletal Injury: An Analysis of Online Communities

Among 5,588 Reddit users (2021–2026) using BPC-157 and/or TB-500 for musculoskeletal injuries, 27.2% reported at least one side effect, with anhedonia at 10.2%.

• Why it matters: Real-world dosing and safety signals for these unapproved peptides are unclear, especially in largely unsupervised settings where products come from grey-market sources.
• What they did: A validated large language model analyzed 92,254 posts and comments from 28,652 users in Reddit peptide communities, comparing reported side effects with four other peptides.
• The result: Most use was for chronic shoulder, knee, or elbow tendon problems, with limited physician involvement (3.8%) and rising BPC-157 dosing; reported improvement was 79.3% among those stating an outcome.

AI summary of the abstract · may contain errors · not medical advice · read the paper.