OSYRIS

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.

2 min read Reviewed 2026-10-01
FDA Status of Common Research Peptides — OSYRIS Health

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.

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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.