PT-141 vs TB-500
Overview
PT-141 is primarily a hormonal peptide, while TB-500 is used for healing & recovery.
This page compares PT-141 and TB-500 across their primary use, typical dosing, reported benefits and side effects, and U.S. regulatory status. For the full monograph on either compound — mechanism of action, clinical research, and references — follow the article links.
Side-by-side comparison
| PT-141 | TB-500 | |
|---|---|---|
| Category | Hormonal | Healing & Recovery |
| Regulatory status (US) | FDA approved | Compounding (Rx) — Apr 2026 |
| Typical dosage | 1.75 mg | 2-5 mg |
| Frequency | as needed | weekly |
| Reported benefits | Enhanced libido, improved sexual function, arousal support | Tissue repair, improved flexibility, reduced inflammation, enhanced recovery, hair growth stimulation |
| Reported side effects | Nausea, flushing, blood pressure changes | Minimal side effects. Rare: headache, nausea, injection site reactions |
Key differences
Primary use. PT-141 is categorised under Hormonal, while TB-500 falls under Healing & Recovery. Their differing categories mean they are usually chosen for different goals rather than as direct substitutes.
Regulatory status. PT-141: FDA-approved. TB-500: not FDA-approved; compounding permitted with a prescription as of April 2026.
Dosing. PT-141 is typically dosed at 1.75 mg (as needed). TB-500 is typically dosed at 2-5 mg (weekly).
Can you stack them?
Some protocols combine peptides, but stacking PT-141 and TB-500 has not been validated for safety or efficacy in controlled trials. Combining compounds can change their effects and risks. Nothing here is medical advice — consult a qualified healthcare provider before starting or combining any protocol.
Frequently asked questions
- What is the difference between PT-141 and TB-500?
- PT-141 is primarily a hormonal peptide, while TB-500 is used for healing & recovery. PT-141 is FDA-approved for one or more indications, whereas TB-500 is not FDA-approved; compounding permitted with a prescription (as of April 2026).
- What is PT-141 used for?
- Sexual function peptide.
- What is TB-500 used for?
- Tissue repair, flexibility, inflammation.
- Can you take PT-141 and TB-500 together?
- Some users combine peptides within a single protocol, but stacking PT-141 and TB-500 has not been established as safe or effective in controlled trials. Neither this comparison nor PeptideSciences101 is medical advice — consult a qualified healthcare provider before combining any compounds.
- Is PT-141 or TB-500 FDA-approved?
- PT-141 is FDA-approved for one or more indications. TB-500 is not FDA-approved; compounding permitted with a prescription (as of April 2026).