In stock
Retatrutide
Metabolic
Metabolic
£69.99
From
Free 24-hour delivery over £75 · Same-day dispatchOrder before 2pm - same-day dispatch · Free 24-hour delivery over £75
The shortlist
Our most-ordered peptides
Independently HPLC-tested, dispatched same-day from our Greater London facility. The products our researchers come back to.
- Retatrutide
£69.99
In stockGHK-CuGHK-Cu
Tissue Repair
Tissue Repair
£34.99
From
£34.99
In stockMOTS-CMOTS-C
Metabolic
Metabolic
£29.99
£29.99
In stockBPC-157BPC-157
Tissue Repair
Tissue Repair
£19.99
£19.99
In stockTB-500TB-500
Tissue Repair
Tissue Repair
£24.99
£24.99
In stockTesamorelinTesamorelin
GH Axis
GH Axis
£49.99
£49.99
What is the Best Sellers collection?
The Best Sellers collection groups the research reference compounds most frequently ordered from Kovalabs by UK laboratories and independent researchers. "Best-selling" here is a sales fact about order volume, not a statement about how any compound behaves or performs. The current members are BPC-157, DSIP, Retatrutide and TB-500. These four are shown as examples of what other buyers order most often; they are not ranked, combined or recommended for any purpose. The full range is on the store page.
What does the research investigate?
Each of these compounds appears in the published peptide research literature, studied in pre-clinical, in-vitro and animal models across separate fields of investigation. None of that work establishes a benefit, effect or outcome in humans. Nothing on this page is a medical claim, none of these materials is a licensed medicine, and a compound being among our most ordered says nothing about any result. Where a member shares a name with a licensed product, Kovalabs supplies the reference material for laboratory work only and does not position it as that medicine, a generic or a treatment.
Are these research peptides legal in the UK?
The compounds in this collection are not controlled drugs under the Misuse of Drugs Act 1971 and may be bought and held in the UK as laboratory reference materials. They are supplied strictly for research use only and are not for human or veterinary consumption. The buyer is responsible for handling, storing and using them in line with the applicable laws and institutional rules. See the research disclaimer for the full terms that apply to every order.
How does Kovalabs assure quality?
Every compound in the Best Sellers collection ships with a per-batch Certificate of Analysis confirming identity and a purity specification of 99% or higher by HPLC. Batch CoAs are published so the documentation can be checked against the vial before any work begins; browse them on the CoAs page. Orders are despatched from the UK. The same standard applies to every product across the store, not only to the most ordered items.
Where to go next
To compare the most ordered reference compounds, open the individual pages for BPC-157, DSIP, Retatrutide and TB-500, each with its own CoA and specification. For compounds outside this short list, the full catalogue is on the store page.
Common questions
- What is the Best Sellers collection?
- It groups the research reference compounds most frequently ordered from Kovalabs by UK laboratories and researchers. Best-selling describes order volume, a sales fact, and nothing more. The current members are BPC-157, DSIP, Retatrutide and TB-500, shown as examples of what other buyers order most often rather than as a ranking or a recommendation for any use.
- Which compounds are in the Best Sellers collection?
- The current members are BPC-157, DSIP, Retatrutide and TB-500. These four appear here because of how often they are ordered, not because one is preferred over another. They are not ranked against each other or intended to be combined. Compounds outside this short list are available across the full Kovalabs store range.
- Are these research peptides legal to buy in the UK?
- Yes. The compounds in this collection are not controlled drugs under the Misuse of Drugs Act 1971 and may be bought and held in the UK as laboratory reference materials. They are supplied for research use only and the buyer is responsible for handling, storage and use in line with applicable law and institutional rules.
- Are these peptides for human use?
- No. Every item in this collection is supplied strictly for laboratory research use only. None of these materials is for human or veterinary consumption, and nothing about a compound being among our most ordered changes that. They are not licensed medicines and Kovalabs makes no medical or therapeutic claim about any of them.
- How is the quality of these peptides assured?
- Every compound ships with a per-batch Certificate of Analysis confirming identity and a purity specification of 99% or higher by HPLC. Batch CoAs are published so the paperwork can be checked against the vial label before work begins. Orders are despatched from the UK, and the same standard applies across the whole store.
- Does best-selling mean a compound is the most effective?
- No. Best-selling reflects how many times a compound has been ordered, which is a commercial fact about demand. It says nothing about how any compound behaves in research and implies no benefit, effect or outcome. Kovalabs does not rank these compounds by performance and makes no efficacy claim for any of them.
- How do I identify which compound I have received?
- Match the compound name and the batch number printed on the vial label to the corresponding per-batch Certificate of Analysis on the CoAs page. The CoA states the identity and the HPLC purity result for that specific batch, so you can verify exactly what was supplied. Each member also has its own product page with its full specification.
- What is the difference between BPC-157 and TB-500?
- They are two distinct peptide sequences studied separately in the research literature, not interchangeable forms of one compound. Each is sold as its own reference material with its own per-batch CoA and HPLC specification. See the individual BPC-157 and TB-500 product pages to compare their identities and documentation.