Want to speed up your recovery after an injury or workout? Some influencers are fans of BPC-157 and TB-500 shots for that. Do you want young, scar-free skin and thick hair? Posts on Reddit praise GHK-Cu and KPV. Do you want to build beautiful, voluminous biceps? Some fitness influencers swear that shots of ipamorelin will work wonders. We’re in the world of peptides — an assortment of chemicals that promise to improve your body and your health — and people are self-injecting these products as part of a growing wellness trend.
Promoted by bodybuilders and influencers, supporters of the “Make America Healthy Again” movement and early adopters in Silicon Valley, peptides promise results that leave people feeling better than good, fitter than fit. Yet despite rave reviews on social media, most peptides have limited clinical evidence demonstrating their health benefits, whether it’s helping heal a rotator cuff injury, improving libido, or building muscle. There is little information on the effectiveness of medications and even less on their safety.
In 2023, the Food and Drug Administration banned the production of several peptides, including BPC-157, GHK-Cu, KPV, and ipamorelin, in the United States by compounding pharmacies – establishments that legally manufacture drugs not approved by the FDA for individual use – due to “significant security risks.” Many peptides are imported from outside the country and many made here are marketed only for research purposes. People who desperately want the promise in the tiny bottles search for them online in legally dubious gray markets.
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But access to photos could soon become easier. On the podcast The Joe Rogan Experience On February 27, Robert F. Kennedy, Jr., secretary of the Department of Health and Human Services, proposed legalizing the 14-peptide combination — and the FDA appears ready to grant his wish. Earlier this week, the agency announced plans to hold a meeting with independent advisers in July to examine whether certain U.S. pharmacies should be allowed to manufacture certain peptidesincluding BPC-157, TB-500 and KPV.
If the increase in peptides occurs, a flood of people could begin using the drugs, regardless of any safety concerns.
A peptide under many names
A peptide is a chain of two or more amino acids, the building blocks of proteins. Cells in the body can produce numerous peptides that perform various tasks or serve as signaling molecules.
Insulin is a peptide. The same is true for human growth hormone and semaglutide, the active ingredient in glucagonlike peptide 1 (GLP-1) receptor agonist drugs such as Ozempic and Wegovy. (GLP-1s are FDA approved for managing type 2 diabetes and for weight loss). Trendy new injections such as BPC-157 and GHK-Cu, touted for tissue repair, are derivatives or synthetic versions of natural peptides. The public and online health retailers are starting to use “peptides” as a catch-all term for any chemical taken for well-being, energy, exercise recovery, and more, says Luke Turnock, a criminologist who studies how people use enhancement drugs at the University of Lincoln in England.
And although people use them as treatments, peptides aren’t often described as medicines. “Drugs have a certain stigma or negative connotation associated with them,” says Turnock. The popularity of peptides has its roots in the bodybuilding and powerlifting communities, he explains, where the “drug” has always been linked to steroids, which are generally banned for professional athletes.
The term “peptides” emphasizes the natural origin of the molecules, explains Flynn McGuire, who studies sports medicine at the University of Utah. “Because it’s ‘natural,’ it’s better or different, even if it’s just drugs,” McGuire says.
A rise in popularity
In recent years, orthopedic surgeon Omar Rahman has seen a surge in interest in peptides. “I’m seeing more and more patients asking about peptides, often motivated by longevity and wellness,” says Rahman, who practices at Pacific Coast Sports Medicine in Los Angeles.
Because peptides span many products — some available by prescription, others on the gray market — it’s difficult to determine exactly how many people are trying them. The subreddit r/peptides currently has more than 70,000 weekly visitors, and the related subreddit r/biohackers, which frequently hosts conversations about peptides, has more than 600,000. Scrolling through TikTok, you get pages of people sharing their “stacks,” combinations of injections people take to achieve their personal goals, from muscle building and post-exercise recovery to increased brain power or a better tan.
“The real cultural turning point in my mind seems to have been around 2022, when GLP-1s really exploded,” says Turnock, who studies the peptide boom. He claims that injection drug use became “normalized” when GLP-1 drugs approved to treat diabetes, like Ozempic, were also shown to be effective for weight loss and eventually became an approved treatment for obesity.
Some people turn to peptides because they feel doctors aren’t giving them the help they need, says Dan Cushman, a sports medicine doctor at the University of Utah. Injuries to certain tissues, such as tendons, “heal very slowly” with conventional treatments, he says. Traditional treatments can also be expensive and painful. For someone desperate for relief, peptides may seem worth a try.
The use of peptides is also linked to a growing interest in health self-care, Turnock says. This is the idea “that doctors, if they do not prescribe what you ask for or do not offer you these solutions, act as an obstacle to your good health”.
Stack
McGuire, Cushman and colleagues published a review last year on a peptide they encountered frequently: BPC-157. The peptide is touted as a way to stimulate several cellular pathways involved in blood vessel formation, cell growth, muscle repair and inflammation. Their examination, however, revealed that most evidence for these health effects came from rodent studiesand only three small pilot studies had examined the use of BPC-157 in humans.
In a diet called “Wolverine,” many people combine BPC-157 with injections of TB-500, another peptide that is believed to promote healing but is the subject of even less research. The “Wolverine” stack is named after the fast-healing X-Men character. Add injections of GHK-Cu and KPV, and the stack is called “glow” or “KLOW”. People claim that GHK-Cu increases wound healing, decreases scarring, and helps regenerate collagen, and that KPV, derived from a hormone naturally found in the body, reduces inflammation. GHK-Cu is found in blood plasma and is an FDA-approved ingredient in topical anti-aging cosmetics, but it is currently banned as an injectable product due to safety concerns, such as the risk of immune reactions caused by impurities.
For muscle development, the peptides ipamorelin and CJC-1295 are shown to stimulate the release of growth hormone. However, both have little clinical evidence behind them. Some people combine ipamorelin with GLP-1 medications to try to lose fat while building muscle, although the effects of taking these injections together have not been studied.
Use at your own risk
Clinical trial data for most of these peptides is thin. Not only are the effects anecdotal, but so are the doses. Drugs approved by the FDA, Cushman says, have been tested and reviewed not only for their effectiveness but also for their safety. There is very little information about most of these peptides, he says, and even less about what happens if they are combined.
In many cases, the provenance of these peptides is even murkier than the gray market suggests. “Patients access peptides through online sellers, wellness clinics, and compounding pharmacies,” says Rahman. “This variability in supply is one of the biggest concerns, particularly around purity, dosing consistency and overall quality control.”
The FDA does not permit the production of BPC-157, GHK-Cu, KPV, and ipamorelin in the United States, such as by compounding pharmacies. for security reasonsso people order them from abroad, usually from China. Some buy peptides labeled “for research only.” Not everyone is stuck in legal gray areas; other peptides are available from compounding pharmacies.
In Kennedy’s February remarks on his goal of allowing more than a dozen peptides to be prepared in the United States, he suggested that peptides made domestically would be safer than those acquired abroad.
“Americans deserve to know the quality of the products they purchase and deserve medicines proven to be safe and effective,” an HHS spokesperson said. Scientific American in response to questions about Kennedy’s comment and the elevator moment. “The FDA’s goal is to ensure that patients can obtain FDA-approved products and that, when these are not available or cannot work due to a patient’s unique situation, they are manufactured by licensed U.S. pharmacies.”
But even if Kennedy’s plan to make certain peptides easier to manufacture in the United States passes, that doesn’t necessarily mean the drugs are safe or effective. THE The FDA does not approve or review drugs from compounding pharmacies – it simply monitors the active ingredients used by the facilities.
If peptides become more readily available in the U.S. market, Cushman predicts, more “people will just start trying.” [them]” – whether there is data to support them or not. The public can experience the benefits – and dangers – of peptides before scientists quantify them in the clinic.