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FDA Warning Letter · #735063

Peptide Partners LLC — FDA Warning Letter (August 24, 2026)

Issued August 24, 2026Status: activeCenter for Drug Evaluation and Research (CDER)

Primary Source

View the original FDA letter on fda.gov →

https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/peptide-partners-llc-735063-08242026

Summary

Company
Peptide Partners LLC
Letter number
#735063
Issue date
August 24, 2026
Subject
Unapproved New Drugs/Misbranded

What FDA cited

Based on our review, “GLP-1 S (Semaglutide),” “GLP-2 T (Tirzepatide),” “GLP-3 Reta (Retatrutide),” “SS-31 (Elamipretide),” “Tesa Peptide (Tesamorelin),” “PT-141 (Bremelanotide),” and “Reconstitution Solution (BAC)” are unapproved new drugs under section 505(a) of the Federal Food, Drug, and Cosmetic Act (FD&C Act), 21 U.S.C. 355(a).

How this letter sits against the other 157

Our reading, from the 158 letters on this register — not part of the FDA’s document.

5 letters on this register carry the date August 24, 2026, so this was a small group action rather than a mass sweep.

A warning letter is the agency putting a company on notice, not a court finding and not a ban. What it is worth to you is in what it alleges, so read the original on fda.gov rather than the fact that one exists.

From the letter

Read full letter on FDA.gov →

Word for word, from the letter of August 24, 2026

This warning letter advises you of significant violations observed during a U.S. Food and Drug Administration (FDA) review of your website. Promptly address the violations described herein without delay, including ensuring that appropriate resources are allocated to fully address the violations and prevent their recurrence. This is not intended to be an all-inclusive list of the violations that may exist in connection with your products or operations. It is your responsibility to ensure that your firm complies with all requirements of federal law, including FDA regulations. Failure to adequately address violations may result in regulatory or legal action without further notice including, without limitation, seizure and injunction.

These products are especially concerning from a public health perspective because injectable drug products can pose risks of serious harm to users. Injectable products are delivered directly into the body, sometimes directly into the bloodstream, and therefore, bypass some of the body’s key defenses against toxins and microorganisms that can lead to serious and life-threatening conditions.

Violations were identified and documented during a review of your website https://peptide.partners/ in July 2026. Based on our review,“GLP-1 S (Semaglutide),” “GLP-2 T (Tirzepatide),” “GLP-3 Reta (Retatrutide),” “SS-31 (Elamipretide),” “Tesa Peptide (Tesamorelin),” “PT-141 (Bremelanotide),” and “Reconstitution Solution (BAC)” are unapproved new drugs under section 505(a) of the Federal Food, Drug, and Cosmetic Act (FD&C Act), 21 U.S.C. 355(a). As explained further below, introducing or delivering these products for introduction into interstate commerce violates sections 301(d) and 505(a) of the FD&C Act, 21 U.S.C. 331(d) and 355(a).

This review was conducted as part of FDA’s public health responsibility to protect the public from unsafe, ineffective, and poor-quality drugs.

The following are violations identified during our review. As a reminder, this is not an all-inclusive list of violations that may exist in connection with your products or operations.

Based on a review of your website, “GLP-1 S (Semaglutide),” “GLP-2 T (Tirzepatide),” “GLP-3 Reta (Retatrutide),” “SS-31 (Elamipretide),” “Tesa Peptide (Tesamorelin),” “PT-141 (Bremelanotide),” and “Reconstitution Solution (BAC)” are drugs under section 201(g)(1) of the FD&C Act, 21 U.S.C. 321(g)(1), because they are intended for use in the diagnosis, cure, mitigation, treatment, or prevention of disease, and/or intended to affect the structure or any function of the body.1 Examples from your product labeling, including on your website, that provide evidence of the intended use (as defined in 21 CFR 201.128) of these products as drugs include, but may not be limited to, the following:

GLP-3 Reta (Retatrutide)On the webpage https://peptide.partners/product/glp-3-retatrutide-12mg-vials/:

Reconstitution Solution (BAC)Your firm offers “Reconstitution Solution (BAC)” for sale to be used to reconstitute the peptide products sold on your website, which are drugs intended for injection, including the six above-mentioned products. The sale of these products together demonstrates that you intend for your “Reconstitution Solution (BAC)” to be used in combination for injection. Therefore, your “Reconstitution Solution (BAC)” is a drug.

Quoted word for word from the U.S. Food and Drug Administration. We assert nothing beyond what the agency published, and the full letter is at https://www.fda.gov/inspections-compliance-enforcement-and-criminal-investigations/warning-letters/peptide-partners-llc-735063-08242026

What FDA warning letters mean

It is the agency writing to a company to say it believes something that company is doing breaks the Federal Food, Drug, and Cosmetic Act — usually a claim on a website, a labeling choice, or how a drug is being made. The company has about fifteen working days to write back.

Read carefully what it is not. It is not a recall, not a criminal charge, and not a court deciding anyone broke the law. It is the regulator opening a file. Companies frequently answer a letter, fix what was cited, and carry on trading, and when FDA accepts that it can issue a close-out letter. We do not track close-outs, so the presence of a letter on this page tells you what FDA said on one date — not where the matter stands today. Ask the company; they will usually tell you, and how they answer is informative in itself.

Across this market the same three citations recur: claiming a compounded product is equivalent to an approved one, labeling that misleads, and compounding from bulk substances FDA has not cleared under sections 503A and 503B. If you are reading a letter here, it is probably one of those.

Where to get GLP-1 online, safely: sellers our editors have checked

These are telehealth sellers our editors have checked. For each one we hold a price, the form the drug comes in, and the states it reaches.

No insurance needed · vetted by our editors

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9.4

Trimi Health

Knowing which pharmacy fills the vial: it names VialsRx

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6.4

ShedRx

Oral orforglipron alongside the injectables

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9.0

bmiMD

Starting below a standard dose, with microdose tiers

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Other warning letters in our database

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Editorial Disclaimer

This is a public communication from a regulator, and by itself it settles nothing about whether the company broke any law. Corrective action is a common response, and a fair number of letters end in a close-out. Read the whole thing on fda.gov through the link above rather than taking our excerpt as the full picture.

Glossary

The words sellers use, defined. Tap any term.