Human clinical-trial data (Phase 1/2 studies in wound healing, cardiac injury, and dry eye) exist only for a different, full-length recombinant thymosin beta-4 product, not for the short synthetic fragment marketed as TB-500, so no completed published human trial has evaluated TB-500 specifically for muscle, tendon, or joint recovery
PubMed McGuire F, Hughes E, Maak T, Cushman DM Thymosin Beta-4 and TB-500 in Tissue Healing, Regeneration, and Musculoskeletal Repair: A Scoping Review
Allen AP, Curran EA, Duggan A, et al
Is it placebo
Phase 2 clinical trials involved 338 adults with obesity (BMI 30 or more) and overweight (BMI of 2729.99) with one or more weight-related conditions such as high blood pressure, high cholesterol levels, heart disease, and type 2 diabetes