Peptides: The Gray Market Injectables Going Mainstream

Editor’s Note: An earlier version of this column appeared online in early July 2026, before the Pharmacy Compounding Advisory Committee meeting. This version has been updated to include information from that session.

In the wellness world, the experimental injectable peptide craze is the latest trend getting a lot of attention. Health and wellness influencers are hawking unapproved treatments on the gray market. The future of the US FDA and the health of consumers is at stake.¹

The FDA² met on July 23-24, 2026 with Pharmacy Compounding Advisory Committee and voted in favor of easing restrictions on six or seven peptides, which are up for consideration, following strong warnings from the agency’s scientists against it. These peptides are available in formulations including injections, nasal sprays and topical creams. They have limited clinical studies and a lack of evidence indicating their effectiveness. Because of inconsistent chemical descriptions and names, it was argued that it is impossible to know exactly which substances are being compounded. They also stated that there are FDA drugs already approved for the same conditions being currently evaluated.

Along with voting in favor of BPC-157, the committee approved TB-5OO. BPC-157 was evaluated for use in ulcerative colitis and TB-5OO for wound healing. These two are often sold together online and is called the “Wolverine Stack” with claims it can help with everything from muscle and tissue repair to reduced inflammation. The committee also voted favorably for the peptides KPV Epitalon and Semax. The committee voted against one peptide called Emideltide, evaluated for opioid withdrawal, chronic insomnia and narcolepsy. Some patients voiced that gray-market products had really helped them when the traditional medical system drugs did not. The FDA generally follows advisory committee recommendations, but has no obligation to do so.

It is now up to the FDA to decide whether to greenlight the drugs for compounding pharmacies to make and pave the way for a peptide gold rush.

According to the Dermatologist Dr. Hopkins³, in dermatology “we are moving beyond passive prevention into active regeneration-leveraging peptide therapies and photo bio stimulation to support cellular repair, improve mitochondrial function and enhance the skin’s ability to heal and maintain itself over time. Peptides and retinoids that stimulate cellular renewal are top picks in the longevity space.”

This column will briefly review injectable peptide craze that is sweeping on the social media.

 Let us understand what peptides are. Peptides are composed of amino acids, and the number of amino acids determines the peptide category.⁴ Two amino acids are a dipeptide, three amino acids are a tripeptide, four amino acids are tetrapeptide, etc. The term oligopeptide can be used to describe peptides built from two to 20 amino acids. The number, type and the order of amino acids determine the properties of peptides. Peptides can interact with selective skin target sites in extremely low concentration and are short-lived. Because peptides facilitate cellular communication, they provide interesting functionality to antiaging  topical formulations. They are extraordinarily expensive and are thus used at the PPM levels in cosmeceutical formulations.

The global peptide therapeutic market was valued at $49.7 billion in 2025 by IMARC, a market research company. It estimates the market to reach $92.6 billion by 2034, exhibiting a CAGR of 6.95% during 2026-2034.

Unproven Peptides

Most of unproven peptides promoted online are technically sold illegally. Any substance that is injected to generate a health benefit or prevent a medical condition is classified as a drug, which cannot be sold without FDA approval.⁵  The FDA considers many peptides to be “biologics,” potentially high-risk type of drugs requiring extra precautions in their manufacture and storage.

In recent times, FDA has added more than two dozen peptides that should not be produced by pharmacies due to lack of safety risks. Some companies market their peptides as dietary supplements, particularly those sold as pills, gummies or powders. Dietary supplements are less tightly regulated than drugs. The FDA still require them to only contain ingredients found on a list of approved substances.

Most peptides are not on that list and therefore aren’t eligible to be sold as supplements. It is generally agreed that consuming peptides orally will have little or no effect since they will dissolve in the gut. Most of the injectable peptides sold in the US are produced by compounding pharmacies, which custom-mix medications that are not available from drug manufacturers. Pharmacies are regulated at the state level and are generally not subject to the same scrutiny as companies overseen by FDA. Some in the peptide field expect Health & Human Services Secretary Robert F. Kennedy, Jr. to roll back FDA’s restrictions on the industry, which could include releasing a list of peptides that the agency will no longer try to keep off the market. The growing popularity of peptides comes as federal officials debate how tightly the products should be regulated. Secretary Kennedy has expressed support for easing some FDA restrictions surrounding peptides.

Physician Concerns

The rise of  peptides has been controversial. Doctors have cited health risks, and the substances have not been studied extensively. Some compounders have already begun making the drugs despite FDA restrictions.

According to Dr. Chen, a lifestyle medicine physician,⁶ patients are hearing a lot on social media about the benefits of peptides. Some companies are touting anti-aging peptides for skin wrinkles, boosting the immune system, muscle tone and strength. All of this is untrue and unfounded. Many of the claims circulating online are not supported by scientific research. Unfortunately, none of the scientific evidence that has been done in terms of research studies supports any of those claims about the peptides. Physicians are increasingly concerned about contaminants and misleading labeling products sold directly to consumers online. Manufacturers who are selling peptides on the market with no regulation, often contain toxins like arsenic or lead. These can be dangerous to a person’s health. She also warns that some products marketed as peptides may contain little or none of the advertised ingredient.

According to Dr. Chen, most doctors feel injectable peptide products are concerning because of the risks tied to impurities and lack of oversight. Some of the most heavily marketed peptides target skincare concerns like wrinkles and acne. According to her, oral and topical peptide products marketed for acne or anti-aging have not been backed by high-quality clinical trials. None of the trials or meta-analysis, which are high-quality trials of these peptides has proven any benefit whatsoever for the skin.

Marketing Claims

Some marketing claims that have been promoted include:

• Anti-aging and longevity benefits: The promise of reversing cellular decline and promoting youthful vitality is enticing, but there is very little true data.

• Athletic performance enhancement: Claims regarding improved muscle mass, exercise recovery time and joint healing are anecdotal without much outcome. There is still need for large-scale human studies.

• Cognitive enhancement: Claims that peptide can improve brain fog and increase mental clarity are mostly marketing.

• Skin and hair regeneration: It is suggested that the consumers stick to more proven regimens like minoxidil and tretinoin.

• Immunity boost: This is a dubious claim. It is meaningless without a more specific claim.

Conclusions

Anti-aging peptide injections are an exciting development in regenerative medicine, but the evidence is not strong enough to say they are proven anti-aging treatment. Peptide injections have become the wellness world’s biggest health hack. It has a devoted following among social media influencers, alternative medicine doctors, biohackers, health optimizers and everyday people. Gray-market peptides exist in a legal and regulatory middle zone. They are not illegal to buy or own, but they are not approved for human use, so are not subject to the quality controls that govern pharmaceutical manufacturing.  Experts say non-FDA approved injectable peptides are not worth putting your health at risk.

Navin Geria

Chief Scientific Officer, Ayurderm Technologies, LLC
[email protected]

Navin Geria, former Pfizer Research Fellow is a cosmetic and pharmaceutical product development chemist and the chief scientific officer of AyurDerm Technologies LLC, which provides Ayurvedic, natural and cosmeceutical custom formulation development and consulting services to the spa-wellness-dermatology industries. He has launched dozens of cosmeceutical and ayurvedic anti-aging products. Geria has more than 30 years of experience in the personal care industry and was previously with Clairol, Warner-Lambert, Schick-Energizer, Bristol-Myers and Spa Dermaceuticals. He has nearly 20 US patents and has been published extensively. Geria edited the Handbook of Skin-Aging Theories for Cosmetic Formulation Development focus book published in April 2016 by Harry’s Cosmeticology. He is a speaker, moderator and chairman at cosmetic industry events. 

References:

1. Pick your poison Dr. Khullar, “New Yorker”, April 13, ‘26
2. FDA committee votes—-peptides, S. O’brien et al., WSJ, July 25, 26.
3. A. Hogan, The Longevity Era, “New Beauty”, Summer’26
4. Dr. Zoe Diana Draelos MD, Professor of Dermatology, Wake Forest University, NC.
5. M. Perrone, The Associated Press, Nov. 14’25
6. A. Longo, ABC News on your side, 5.55 AM, May 18’26