Source comparison
TB-500 Legal 2026 Status: Research Use Comparison
TB-500 (Thymosin Beta-4) Not FDA-approved; no NDA filed Legal for research; illegal for human consumption Yes. Banned under S0 and S2 Wound healing, angiogenesis, tissue repair models Legal to buy for labs, illegal to use therapeutically or in sports BPC-157 N
This comparison does not assign a generated winner or score.
- TB-500 (Thymosin Beta-4)
- Not FDA-approved; no NDA filed
- Legal for research; illegal for human consumption
- Yes. Banned under S0 and S2
- Wound healing, angiogenesis, tissue repair models
- Legal to buy for labs, illegal to use therapeutically or in sports
- BPC-157
- Not FDA-approved; preclinical only
- Yes. Banned under S0
- Gastrointestinal repair, tendon healing in animal models
- Same legal framework as TB-500; research-only
- Thymosin Alpha-1
- FDA-approved outside US (Zadaxin); investigational in US
- Legal for research; prescription-only in approved jurisdictions
- No. Not on WADA list
- Immune modulation, hepatitis B/C treatment trials
- Approved abroad; IND status in US; not banned in sports
- Semaglutide (GLP-1)
- FDA-approved (Ozempic, Wegovy)
- Prescription required; legal with valid Rx
- Type 2 diabetes, obesity treatment
- Fully approved drug; legal only by prescription
- Ipamorelin
- Yes. Banned under S2
- Growth hormone secretagogue research
- Research-only; banned in competitive athletics