Regulatory Guide
FDA Status of Common Research Peptides
A factual reference page covering approved pharmaceutical equivalents, related brand names, and what those approvals do and do not mean for research-grade products.
The Core Distinction
A pharmaceutical version of a compound may be FDA-approved even when the research-grade version is not. That approval applies to the specific drug product, its dosage form, its manufacturing pathway, and its labeled medical indication — not to every vial or every research supplier using the same molecule name.
OSYRIS products are not those pharmaceutical brands. They are research-grade compounds sold for laboratory research only. The table below is included for regulatory context, not as a claim of equivalence.
FDA Context Table
| Compound | FDA-Approved Equivalent | Brand Name | Indication |
|---|---|---|---|
| PT-141 / Bremelanotide | Yes | Vyleesi | HSDD |
| Sermorelin | Former (discontinued) | Geref | GH deficiency testing |
| Tesamorelin | Yes | Egrifta | HIV lipodystrophy |
| Thymosin Alpha 1 | Non-US (35+ countries) | Zadaxin | Immune indications |
What the Table Does Not Mean
FDA approval of a pharmaceutical equivalent does not automatically convert a research-grade product into a legal prescription drug, a compounded medication, or a therapeutically marketed product. It also does not remove the RUO framework that applies to research-only sales.
Featured Links
Browse the current certificate archive and download batch-specific COA documentation for the catalog.
Open → Regulatory Guide Research-Grade vs Pharmaceutical-GradeUse the quality-tier guide to understand why an approved drug and a research-grade compound are different product categories.
Read → Shop Collection Metabolic CollectionBrowse the current metabolic research catalog.
Browse →Questions
Common Questions
Does FDA approval of a pharmaceutical version make the research version legal?
No. The approval applies to the approved drug product and its regulated manufacturing pathway, not automatically to research-grade material sold under RUO terms.
Are OSYRIS products compounded drugs?
No. OSYRIS sells research-grade compounds for laboratory use. The catalog is not a compounding-pharmacy offering.
What is the difference between research-grade and pharmaceutical-grade?
Research-grade material is intended for laboratory use and analytically verified for research standards. Pharmaceutical-grade products are manufactured for human use under cGMP and release controls.
Why are some peptides FDA-approved and others not?
Approval depends on whether a sponsor has completed the clinical, manufacturing, and regulatory process for a specific drug product and indication.
Can a doctor prescribe OSYRIS products?
No. OSYRIS products are not sold as prescription pharmaceuticals.