Beauty

Are Peptide Injections Worth the Hype? We Asked Three Doctors

BYKhaoula Ghanem

April 29, 2026

At some point in the last year, peptide injections went from something your very specific, very biohacking friend wouldn’t stop talking about to something that keeps popping up where you least expect it. Case in point: I went in for a routine root touch-up, fully prepared to zone out for a couple of hours, when my hairdresser casually started telling me about the peptides she orders online and injects herself at home, suggesting I look into it too.

It feels like the kind of treatment that starts as a niche wellness hack and ends up casually mentioned between a Pilates class and a skincare appointment. Supposedly, they can fix everything from your sleep to your skin to your metabolism. Naturally, that raises a few questions.

To cut through the noise, I asked three doctors the same set of questions: What exactly are peptides? Do they actually work? And more importantly, are they as safe as they’re being sold?

First Thing’s First: What Even Are Peptides?

If you strip away the marketing language, peptides are not some futuristic, lab-invented miracle. They already exist inside your body.

“They are short chains of amino acids… smaller and more targeted, and they act as biological messengers, telling specific cells to do specific things,” explains Dr. Mahmoud Al Darabie, Medical Manager at Valeo Health. “Produce more of this hormone. Repair that tissue. Calm this inflammatory response.”

In other words, peptide therapy is less about introducing something new and more about amplifying signals your body already produces.

Award-winning expert in Aesthetic Medicine and Antiaging, Dr. Raquel Fernández De Castro from Hortman Clinics echoes that idea, describing peptides as compounds that “interact with processes and mechanisms to reduce inflammation, stress, or support healthy synapses,” ultimately helping the body restore balance on its own.

The reason they’re injected rather than taken orally comes down to biology. As Dr. Al Darabie notes, peptides are “largely destroyed by the digestive system,” which is why they’re delivered via small subcutaneous injections so they can actually reach the bloodstream intact.

Not All Peptides Are Doing the Same Thing

One of the biggest misconceptions around peptide therapy is that it is a single, uniform treatment. “‘Peptide’ is a category, not a treatment,” says Dr. Al Darabie. “Different peptides act on entirely different systems, through entirely different mechanisms.”

That means what you take depends entirely on what you’re trying to fix. Some peptides stimulate growth hormone release, which can influence sleep, recovery, and body composition. Others are used for tissue repair, helping muscles, tendons, and ligaments recover faster. Some target inflammation, others gut health, others skin quality.

Dr. Raquel points to examples like “GHK-Cu for skin, Epithalon for longevity, or CJC Ipamorelin for enhanced body mass and improving sleep,” alongside BPC-157, which is often used for gut health and muscle recovery.

The takeaway is simple: this is not a one-size-fits-all situation. Or, as Dr. Al Darabie puts it, the real starting point is not “which peptide?” but “what are we actually trying to achieve?”

So… Do They Actually Work?

“Peptide therapy produces gradual, cumulative changes, not dramatic overnight transformations,” says Dr. Al Darabie, noting that most people begin to see meaningful results “between four and twelve weeks.”

Those results are often subtle but meaningful: better recovery from workouts, improved sleep, reduced chronic pain, or gradual shifts in body composition.

Dr. Raquel frames it more poetically: peptides “open the doors to different needs of the body… clean up, recover, restructure,” but she’s quick to add that they are “not the only superhero,” and need to be paired with healthy habits.

The Side Effects No One on TikTok Is Talking About

In a clinical setting, side effects tend to be relatively mild, notes Dr. Al Darabie, pointing to things like “injection site bruising,” or temporary water retention and joint stiffness with certain protocols. But that’s only half the story. The real risks start when peptide use moves outside of medical supervision—which, increasingly, it has.

A large portion of peptides circulating online are sold as “research chemicals,” with no regulation, no quality control, and no guarantee of what is actually inside the vial. As Dr. Al Darabie puts it bluntly: “Injecting a product of unknown purity is not a wellness practice—it is a genuine risk.”

Dr. Mohsen Soofian from Hortman Clinics reinforces this, warning that these products often contain “contamination, incorrect dosing, and unknown impurities,” with “no reliable way to verify what is actually contained.” Then there’s the issue of self-experimentation. Without proper testing, dosing becomes guesswork, and internal changes—like blood glucose shifts or hormone imbalances—can go completely unnoticed.

The Long-Term Question Mark

Peptides are often marketed as “natural,” which can create a false sense of security. Dr. Al Darabie points to an ongoing scientific question around peptides that elevate growth hormone and IGF-1 levels, noting that “chronically high IGF-1” has been associated in some studies with increased cancer risk. That doesn’t mean these treatments are inherently dangerous, but it does mean they are not designed to be used indefinitely without monitoring. There are also specific peptides, like tanning agents Melanotan I and II, that he says he would not prescribe at all due to links to changes in moles and potential melanoma risk.

The broader point is that peptide therapy still lacks decades of long-term safety data, which makes proper medical oversight non-negotiable.

Who Should Avoid Peptides?

Not everyone is a good candidate. Across the board, doctors flagged several groups who should avoid peptide therapy or approach it with extreme caution. “Pregnant patients, breastfeeding patients, cancer patients,” says Dr. Raquel, noting that similar precautions apply as with many other treatments.

Dr. Al Darabie adds that anyone with hormone-sensitive cancers or certain autoimmune conditions should be particularly cautious, especially with peptides that influence growth hormone or immune response.

Then there’s a more universal category: people unwilling to do proper testing. “Anyone who is unwilling or unable to commit to baseline testing and periodic monitoring should not be starting a peptide protocol,” he says.

The Cost of Peptides

In the UAE, peptide therapy can range from around 1,400 AED per month for simpler protocols to several thousand dirhams for more complex treatments.

And while cheaper options exist online, every doctor I spoke to warned against them. “The apparent cost savings… are not real savings when the actual risk profile is accounted for,” says Dr. Al Darabie, pointing to the potential cost of complications or ineffective products.

Are the Results Permanent?

Some peptides, particularly those used for tissue repair, create structural changes that persist after treatment ends. As Dr. Al Darabie explains, once tissue healing has occurred, “that healing is real and does not require ongoing administration.”

Others require maintenance. As Dr. Mohsen notes, stopping treatment doesn’t cause withdrawal, but “the benefits… will gradually diminish over time, and the body will return to its baseline state.”

The Part No One Likes to Hear: Lifestyle Still Matters

If there is one thing all three doctors agreed on, it is this: peptides are not a shortcut. “They enhance the body’s natural processes, but they cannot compensate for fundamental deficiencies in lifestyle,” says Dr. Mohsen.

Dr. Al Darabie puts it even more directly: “Peptides don’t replace the fundamentals, nothing does.” Sleep, nutrition, exercise, and stress management still do most of the heavy lifting.

So, Are They Worth It?

Peptide therapy is not snake oil, but it is also not the miracle fix it is sometimes marketed as. It sits somewhere in between; a precision tool that can be genuinely useful when used correctly, and potentially risky when it is not.

Under proper medical supervision, with clear goals and realistic expectations, peptides can support recovery, improve certain biological functions, and complement a well-built lifestyle. Outside of that framework, they quickly move into experimental territory.

And if there is one takeaway from speaking to three different doctors, it is this: peptide therapy is less about chasing shortcuts, and more about understanding your body well enough to know whether you need them in the first place.

Are Peptide Injections Worth the Hype? We Asked Three Doctors

First Thing’s First: What Even Are Peptides?

Not All Peptides Are Doing the Same Thing

So… Do They Actually Work?

The Side Effects No One on TikTok Is Talking About

The Long-Term Question Mark

Who Should Avoid Peptides?

The Cost of Peptides

Are the Results Permanent?

The Part No One Likes to Hear: Lifestyle Still Matters

So, Are They Worth It?

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Are Peptide Injections Worth the Hype? We Asked Three Doctors

First Thing’s First: What Even Are Peptides?

Not All Peptides Are Doing the Same Thing

So… Do They Actually Work?

The Side Effects No One on TikTok Is Talking About

The Long-Term Question Mark

Who Should Avoid Peptides?

The Cost of Peptides

Are the Results Permanent?

The Part No One Likes to Hear: Lifestyle Still Matters

So, Are They Worth It?

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