Peptide Potential

It’s fair to say that peptides are having a moment, with global search trends experiencing a significant surge. But why are peptides so popular and what does this surge in interest mean for professionals and patients? Elizabeth Philp, CEO & Founder of Roseway Labs, an award-winning private compounding pharmacy in the UK, explains. 

Peptides have become a prominent topic in recent months.¹ Most consumers are aware of topical peptides, which have been around since the early 1970s², but gained significant traction in the early 2000s with the introduction of palmitoyl pentapeptide-4 (Matrixyl) to specifically address ageing concerns.³ However, the medical application of injectable peptides began approximately a century ago with the advent of insulin therapy in the 1920s.^4-5
 
This latest surge in interest can be partly attributed to the continued popularity of topical peptides alongside an increased awareness of using peptides for therapeutic purposes, such as weight loss and injury recovery, as well as trends such as ‘biohacking’. One class of peptides that consumers may have heard of without realising it are GLP-1 receptor agonists, such as semaglutide and tirzepatide, which are now widely prescribed for weight management and type 2 diabetes.  
 
The US Food and Drug Administration (FDA) has recently announced that it is considering reversing restrictions on several peptide compounds, and interest has surged globally. Compounds like BPC-157, widely used in the US for inflammation and tissue healing, are generating significant attention. The science is genuinely compelling, and clinicians are increasingly being asked about them. The issue is that demand has outpaced regulation, with many peptides on the market not undergoing the strict regulatory processes like those used in medications, including clinical trials.”

Are peptides legal in the UK? 
In the UK, peptides such as BPC-157 cannot be sold for use in humans. At Roseway Labs, we are asked regularly to supply peptides, and our position is clear. 

The MHRA will not permit them for human use because the active ingredients are not manufactured at sites regulated by a recognised authority such as the MHRA, FDA, or equivalent.  Ingredients that are not approved for human use cannot be present in facilities that make human medication.  Roseway Labs has engaged with multiple manufacturers globally, and the answer is consistently the same: no suitable certifications exist. 
 
Without that regulatory infrastructure, these ingredients cannot and should not move through legitimate pharmaceutical channels. What fills the void instead is a grey market, where products are labelled “for research use only,” sold with unknown purity, and consumed with no clinical oversight or industry-wide protocols.  We have seen this pattern before. It looks very much like the early steroid market.
 
The real risk isn’t the science – it’s the supply chain  
Peptide molecules themselves are worth taking seriously. The issue is the absence of the infrastructure needed to use them safely. There is no recognised analysis and quality control of the active pharmaceutical ingredient, no requirement to manage the temperature of the product during transit and storage, no adverse event tracking and ultimately, no way to verify what is in the vial.   

For patients, this matters enormously. Purchasing peptides through grey market channels means you have no assurance of purity, dosage accuracy, or safety. Any UK clinician currently prescribing these compounds is taking on significant personal and professional risk.
 
For those patients curious about peptides, the science is worth exploring, but the black market is not the appropriate route, and we strongly recommend that the advice given to patients is that they wait until regulations for peptides in the UK are introduced. By July 2026, seven peptides may become FDA-approved for human use, with a further five considered by February 2027. If this happens, it will be a game-changer. However, should appropriate ingredients be accepted into the UK market, there still needs to be agreement about clinical protocols, dosage forms, expiry dates, storage conditions and temperature control during transit.  

Any of these peptides offered in the UK would be prescribed as unlicensed medication and should be packed in a sterile facility rather than a compounding pharmacy.

^References

1. ^{The Independent. “Influencers selling peptides on TikTok…”
   https://www.independent.co.uk/news/uk/home-news/influencers-selling-peptides-tiktok-b2859168.html}
2. ^{Pickart L, Vasquez-Soltero JM, Margolina A.
   GHK Peptide as a Natural Modulator of Multiple Cellular Pathways in Skin Regeneration.
   BioMed Research International. 2015;2015:648108.
   doi: 10.1155/2015/648108}
3. ^{Robinson LR, Fitzgerald NC, Doughty DG, Dawes NC, Berge CA, Bissett DL.
   Topical Palmitoyl Pentapeptide Provides Improvement in Photoaged Human Facial Skin.
   International Journal of Cosmetic Science. 2005 Jun;27(3):155-160.
   doi: 10.1111/j.1467-2494.2005.00261.x}
4. ^{Almeida JR.
   The Century-Long Journey of Peptide-Based Drugs.
   Antibiotics (Basel). 2024 Feb 20;13(3):196.
   doi: 10.3390/antibiotics13030196}
5. ^{Lau JL, Dunn MK.
   Therapeutic Peptides: Historical Perspectives, Current Development Trends, and Future Directions.
   Bioorganic & Medicinal Chemistry. 2018 Jun 1;26(10):2700-2707.
   doi: 10.1016/j.bmc.2017.06.052}