Unregulated Peptide Injections Surge in Popularity Despite Safety Concerns

More Americans are turning to unapproved injectable peptides marketed as miracle treatments for everything from muscle building to anti-aging, highlighting the nation’s growing fascination with alternative wellness therapies outside mainstream medicine.

The trend has gained momentum following the popularity of FDA-approved GLP-1 medications for weight loss. However, the peptides being heavily promoted by influencers, celebrities, and wellness entrepreneurs are fundamentally different – many have never undergone rigorous clinical testing for human use, with evidence largely limited to animal studies.

“None of them are proven,” warns Dr. Eric Topol, research methods expert and director of Scripps Research Translational Institute. “None of them have gone through what would be considered adequate clinical trials, but nonetheless many people are taking these. It’s actually quite extraordinary.”

Several popular peptides, including BPC-157 and TB-500, are banned by international sports authorities as performance-enhancing substances. Yet they continue to be marketed aggressively online.

Among those who have publicly praised peptides is Health Secretary Robert F. Kennedy Jr., who has built a substantial following among Americans skeptical of conventional medicine and pharmaceutical companies. Kennedy has pledged to end what he calls “FDA’s war” on peptides and other alternative treatments embraced by his Make America Healthy Again movement.

For years, the Food and Drug Administration has attempted to regulate this space, sending warning letters to clinics promoting unapproved peptides and adding more than two dozen varieties to a list of ingredients that should not be compounded by specialty pharmacies.

Some of Kennedy’s associates directly profit from the peptide industry. Self-described “biohacker” Gary Brecka, who sells peptide injectables, patches, and nasal sprays through his website for $350-$600 each, has featured Kennedy on his podcast. During the appearance, Kennedy reiterated his promise to “end the war at FDA” on peptides and other alternative therapies.

Podcast host Joe Rogan has also promoted peptides to his massive audience, claiming BPC-157 cured his elbow tendonitis in just two weeks. Rogan is among the celebrity clients listed on the website of Ways 2 Well, a Texas-based company offering peptides and other alternative treatments.

For $99, Ways 2 Well provides a “peptide consult” with a physician, after which the company ships peptide vials with instructions and syringes. The company’s founder, Brigham Buhler, is a former pharmaceutical sales representative.

Andrea Steinbrenner, a consulting executive who receives monthly peptide infusions at a clinic near San Diego, represents the typical consumer drawn to these treatments. “I think peptides are popular right now because we are the aging generation and we are looking for alternatives to modern day medicine,” she said.

Proponents often claim peptides are safe because they’re based on substances naturally found in the body. “Unlike synthetic pharmaceuticals, peptides are naturally recognized by your body,” Brecka told his 2+ million Instagram followers.

However, medical experts caution that commercially available peptides are typically synthetic versions administered at doses far higher than naturally occurring levels, increasing risks of allergic reactions and other potential harms.

Many peptide products carry labels stating they’re for “research use only” – language that pervades the industry. One Facebook group even instructs members to avoid saying they’re “taking” peptides and instead say they’re “researching” them. Legal experts say this wording attempts to circumvent FDA regulations, as the agency doesn’t oversee chemicals not intended for human use.

The origin and quality of these products raise additional concerns. It’s often unclear whether peptides are being produced domestically by pharmacies and mislabeled, or imported from chemical manufacturers, many in China, not subject to FDA quality standards.

“Research-grade peptides are going to have junk in them,” warns Paul Knoepfler, a cellular biologist at the University of California Davis. “They’re going to have chemicals used in the purification process and fragments of peptides that you don’t want.”

On platforms like TikTok, overseas companies offer to ship dozens of peptide varieties to the U.S. for as little as $5 per vial, raising serious questions about what customers are actually injecting into their bodies.

During the COVID-19 pandemic, the FDA issued multiple warning letters to businesses promoting peptides with supposed “immune-boosting powers.” In 2023, the agency added nearly 20 peptides to a list of substances that should not be compounded due to safety risks.

This triggered pushback from wellness entrepreneurs and compounding pharmacies, including lawsuits. One coalition, Save Peptides, warned followers that “our basic human rights to access alternative medical care using regenerative peptides is being stripped away by the FDA.”

The regulatory landscape may soon shift. Under Kennedy’s leadership, the FDA recently removed several experts from its compounding advisory panel, potentially clearing the way for appointing more peptide-friendly voices who might vote to permit some previously banned substances.

For now, doctors are increasingly fielding questions from patients intrigued by peptides and seeking prescriptions. Dr. Anita Gupta of Johns Hopkins School of Medicine, who served on FDA’s compounding committee until earlier this year, offers straightforward advice: “Patients should be really asking their health care professionals: Are these medications safe long term? That’s the question I would ask if I was a patient.”