Flex Peptides reviews
Flex Peptides at a glance
- PepFinder Score
- 6.5/10
- Based in
- United Kingdom
- Products tracked
- 21 across 16 peptides
- Price level
- 13% below the UK market median
- Testing evidence
- Stated by the store, no certificates on file
- Verified store
- Not yet
- Last checked
- 17 Oct 2026
PepFinder currently tracks 21 products from Flex Peptides across 16 peptides. Its listed prices per mg are 13% below the UK market median, across 19 listings we could compare. The cheapest listing we track is £15.95. PepFinder last read its listings on 17 Oct 2026.
PepFinder rating
Out of 10
Customer rating
No customer reviews yet
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Best for: Large product selection
- Large range with 21 listed products
- Refund or returns policy published
- Delivery times not yet confirmed
How its prices compare · 19 listings checked against the market
We may earn a commission. How this works
Flex Peptides review: what we found
Last checked 17 Oct 2026 · All sources
What PepFinder checked
Observed by our checks or taken from public records
- We read 21 listings across 16 peptides from its website.Details · 17 Oct 2026
- Its comparable prices are 13% below the market median per mg (19 listings compared in the same currency).Details · 17 Oct 2026
- Domain age: 2026-01-16 (checked by PepFinder against an independent source)Domain age ↗ · 24 Sept 2026
- The Internet Archive's earliest capture of flexpeptides.co.uk is dated 2026-06-13.Internet Archive: first capture ↗ · 23 Sept 2026
- Recorded as serving the UK: its catalogue is priced in GBP and it appears in the UK search results. Where the business is based is not stated on its website.PepFinder editorial ↗ · 23 Sept 2026
What the store says
The store's own statements, not checked by PepFinder
- The supplier states its products are independently tested: “…de Supplier Precision peptides, verified by science 99%+ purity on every batch, independently verified by HPLC/MS with a published Certificate of Analysis. Suppli…”States independent testing ↗ · 23 Sept 2026
- The supplier's website links to a page of certificates of analysis or lab results.Links a COA / lab results page ↗ · 23 Sept 2026
- Business location: GB (as stated on the supplier's website, reviewed by PepFinder)Business location ↗ · 9 Oct 2026
- The supplier's homepage links to a refund policy page.Linked from the supplier's homepage ↗ · 23 Sept 2026
- The website offers these ways to contact support: WhatsApp, Email.Customer support channels ↗ · 23 Sept 2026
Not yet known
Gaps in the record, not faults
- Whether its testing claims hold up: we have not yet seen and reviewed one of its certificates.
- Not yet found on its website: stated delivery time, payment methods, testing laboratory, public batch numbers.Details
- What ordering is like: no PepFinder customer has reviewed it or reported an order yet.
PepFinder has not bought from or tested this store's products. Request a correction with evidence.
No customer reviews of Flex Peptides yet
Ordered from Flex Peptides? A review or a short report of dispatch, delivery, payment or support helps the next buyer. Reviews are moderated; the store can reply but not remove them.
Rating by category
How we rate- Product selection
- 7.5 / 10
- Value
- 7.0 / 10
- Reliability
- 7.0 / 10
- Delivery
- Not enough data
- Customer service
- 7.0 / 10
- Payment options
- Not enough data
- Review sentiment
- Not enough data
- Testing and traceability
- 4.6 / 10
- Information availability
- Good
Why does PepFinder say this?
We can show a source for 11 of the 15 facts that matter about a store (who runs it, contact details, shipping, payments, testing, prices). Not yet confirmed: stated delivery time, payment methods, testing laboratory, public batch numbers. “Not confirmed” means we have not found it, not that the answer is no. See sources.
Popular products
Checked 17 Oct 2026| Product | Supplier price |
|---|---|
| £39.95 £0.40/mg 13% below average | |
| £24.95 £2.50/mg 17% below average | |
| £59.95 £3.00/mg 45% below average | |
| £49.95 £5.00/mg 29% below average | |
| £24.95 £2.50/mg 11% below average | |
| £15.95 £3.19/mg 6% above average |
We may earn a commission. How this works
Prices as listed by the supplier when we last checked; the supplier confirms the final price. “vs market” compares price per mg with the median across tracked suppliers listing the same peptide in the same currency and serving this store's region, never converted.
How its prices compare
Flex Peptides lists in GBP. We compared 19 of its 21 listings with the median price per mg across the other stores that list the same peptide in GBP and serve the UK (86 to 216 stores per product). Prices are never converted between currencies, so this is a like-for-like comparison for a buyer in the UK.
Taken together, its typical listing sits 13% below that market median. Behind that: 11 products priced below most stores, 4 within 5% of the median, and 4 products priced above most stores. A store is rarely the cheapest or the dearest on everything, so the product you want matters more than the overall figure.
Priced below most stores (11)
| Product | Price | vs market median |
|---|---|---|
| TB-500 10mg | £19.95 | 50% below |
| NAD+ 1000mg | £49.95 | 50% below |
| Tesamorelin 20mg | £59.95 | 45% below |
| Ipamorelin 10mg | £23.95 | 37% below |
| Tesamorelin 10mg | £34.95 | 36% below |
| AOD-9604 10mg | £49.95 | 29% below |
And 5 more in the full catalogue below.
Priced above most stores (4)
| Product | Price | vs market median |
|---|---|---|
| Kisspeptin-10 5mg | £23.95 | 21% above |
| KLOW blend 80mg | £79.95 | 7% above |
| BPC-157 5mg | £15.95 | 6% above |
| Selank 5mg | £15.95 | 6% above |
Price per mg lets vials of different sizes be compared. A higher price can reflect a smaller vial, included shipping, or testing the store pays for; the per-peptide price pages show every store side by side. Prices are as the store listed them when we last checked.
Pros and things to consider
Pros
- Large range with 21 listed products
- Refund or returns policy published
Things to consider
- Delivery times not yet confirmed
- Has not completed PepFinder verification (most suppliers have not)
From PepFinder's own checks of the supplier's website and public records. “Not confirmed” means we have not found it yet. Request a correction.
About Flex Peptides
Who they are and what they sell
Flex Peptides is based in the United Kingdom. It lists 21 products across 16 peptides. It states it ships to the United Kingdom. Payment methods are not stated. Its PepFinder Score is 6.5 out of 10. It has no customer reviews on PepFinder yet. PepFinder last read its website on 17 Oct 2026.
Flex Peptides is a research-peptide store based in United Kingdom. We track 21 of its listings across 16 peptides, including BPC-157, GHK-Cu, MOTS-c, TB-500, Tesamorelin and AOD-9604. It has no customer reviews on PepFinder yet.
To see whether Flex Peptides is good value, compare its prices per mg with other stores on BPC-157 prices in the UK, GHK-Cu prices in the UK and MOTS-c prices in the UK. The “Is Flex Peptides legit?” checks below cover contact details, payment, delivery and testing. Before a first order, read how to read a peptide COA and compare other suppliers in the UK.
Store and verification
Unclaimed · 8 legitimacy checks
Store information
- Trading name
- Flex Peptides
- Location
- United Kingdom
- Domain first seen
- 16 Jan 2026
- First tracked by us
- 23 Sept 2026
- Estimated time active
- 9 months
- info@flexpeptides.co.uk
Is Flex Peptides legit? What we can check
No website can promise that a supplier is trustworthy. These are the checks we can make from public records, the supplier’s own website and our reviews. They are the same checks as in our guide to spotting an unreliable supplier.
Website history (Not known)
Domain first seen less than a year ago. Most peptide stores are new, so PepFinder does not count this against a store.
Ways to get in touch (In place)
WhatsApp, Email.
Written policies (In place)
Refund policy and terms published.
Independent testing (Not known)
Flex Peptides states that its products are independently tested, links a certificates-of-analysis or lab-results page. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
PepFinder verification (Not known)
Not verified. Most suppliers are not; verification is voluntary.
Regulator notices and warnings (In place)
None found in our records.
Card payments (Not known)
Payment methods not yet recorded.
Customer reviews (Not known)
No reviews on PepFinder yet.
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Shipping and payments
What we know about delivery and paying
Testing and certificates of analysis
Flex Peptides states that its products are independently tested, links a certificates-of-analysis or lab-results page. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
Testing transparency
- Certificates of analysis
- Testing claimed, not reviewedSupplier claims
Flex Peptides states that its products are independently tested, links a certificates-of-analysis or lab-results page. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
- Batch-specific COAs
- Not yet assessed
- States third-party testing
- ✓ Yes
- Laboratories named by the supplier
- None found
- Lab accreditation identifiable
- Not yet assessed
- Batch numbers public
- Not yet assessed
- Manufacturing/source location disclosed
- Not yet assessed
- Testing documents we hold
- None yet
We record what testing documents state and where they came from. We do not test products, and a certificate is not evidence that a product is safe for any use.
Full catalogue (21 products)
Every listing we track, with search, price per mg and price history
Listed catalogue and prices
21 products · last checked 17 Oct 2026| Product (as listed) | Price | Per mg | Stock |
|---|---|---|---|
| £49.95 10mg | £5.00 | ||
| £15.95 5mg | £3.19 | ||
| £24.95 10mg | £2.50 | ||
| £21.95 50mg | £0.44 | ||
| £39.95 100mg | £0.40 | ||
| £67.87 As listed | — | ||
| £29.95 1500mg | £0.02 | ||
| £23.95 10mg | £2.40 | ||
| £79.95 80mg | £1.00 | ||
| £29.95 10mg | £3.00 | ||
| £23.95 5mg | £4.79 | ||
| £36.95 20mg | £1.85 | ||
| £78.50 As listed | — | ||
| £49.95 1000mg | £0.05 | ||
| £24.95 10mg | £2.50 | ||
| £15.95 5mg | £3.19 | ||
| £19.95 5mg | £3.99 | ||
| £19.95 10mg | £1.99 | ||
| £34.95 10mg | £3.50 | ||
| £59.95 20mg | £3.00 | ||
| £34.95 10mg | £3.50 |
The supplier confirms the final price and availability when you order. Product names, photos, quantities and prices are as publicly listed by the supplier; photos load from the supplier’s own website. “vs market” compares price per mg with the median across tracked suppliers listing the same peptide in the same currency; prices are never converted between currencies. We do not sell these products and give no guidance on their use.
Sources and evidence
Where each fact came from · information availability: good
Evidence Coverage: 79%
What we know about this supplier, and whether we can show you where it came from. “Not known” means we have not found it, not that the answer is no.
| Fact | Status | Last observed |
|---|---|---|
| Business location | Known, sourced | 30 days ago |
| Contact details | Known, sourced | 46 days ago |
| Shipping destinations | Known, sourced | 30 days ago |
| Stated delivery time | Not known | — |
| Payment methods | Not known | — |
| Customer support channels | Known, sourced | 46 days ago |
| Refund or returns policy | Known, sourced | 46 days ago |
| Terms of sale | Known, sourced | 46 days ago |
| Domain age | Known, sourced | 45 days ago |
| Certificates of analysis | Known, sourced | 46 days ago |
| Independent testing | Known, sourced | 46 days ago |
| Testing laboratory | Not known | — |
| Public batch numbers | Not known | — |
| Product catalogue | Known, sourced | 23 days agoDue a re-check |
| Prices | Known, sourced19 of 21 listed prices can be compared per mg | 23 days agoDue a re-check |
Evidence and sources
| Topic | Claim | Basis | Source type | Captured | Last checked | Source |
|---|---|---|---|---|---|---|
| Shipping policy | Business location: GB (as stated on the supplier's website, reviewed by PepFinder) | Supplier-stated | Supplier website | 1 Oct 2026 | 30 days ago | Business location |
| Domain | Domain age: 2026-01-16 (checked by PepFinder against an independent source) | Verified fact | Other | 24 Sept 2026 | 45 days ago | Domain age |
| Pricing | 20 peptide listings read from the supplier's own catalogue. Prices and stock are as the site listed them at capture. | Supplier-stated | Supplier website | 23 Sept 2026 | 23 days ago | Supplier's public product catalogue |
| Contact details | The website offers these ways to contact support: WhatsApp, Email. | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | Customer support channels |
| Pricing | 14 peptide listings read from the supplier's own catalogue (product-pages). Prices and stock are as the site listed them at capture. | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | Supplier's public product catalogue |
| Testing claim | The supplier states its products are independently tested: “…de Supplier Precision peptides, verified by science 99%+ purity on every batch, independently verified by HPLC/MS with a published Certificate of Analysis. Suppli…” | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | States independent testing |
| Contact details | The website publishes an email address, a contact page. | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | Publishes contact details |
| Domain | The Internet Archive's earliest capture of flexpeptides.co.uk is dated 2026-06-13. | Verified fact | Domain record | 23 Sept 2026 | 46 days ago | Internet Archive: first capture |
| Certificates of analysis | The supplier's website links to a page of certificates of analysis or lab results. | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | Links a COA / lab results page |
| Pricing | 14 peptide listings read from the supplier's own catalogue (product-pages). Prices and stock are as the site listed them at capture. | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | Supplier's public product catalogue |
| Shipping policy | Recorded as serving the UK: its catalogue is priced in GBP and it appears in the UK search results. Where the business is based is not stated on its website. | Editorial assessment | PepFinder editorial | 23 Sept 2026 | 46 days ago | Source |
| Pricing | 14 peptide listings read from the supplier's own catalogue (product-pages). Prices and stock are as the site listed them at capture. | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | Supplier's public product catalogue |
| Refund policy | The supplier's homepage links to a refund policy page. | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | Linked from the supplier's homepage |
| Terms | The supplier's homepage links to a terms policy page. | Supplier-stated | Supplier website | 23 Sept 2026 | 46 days ago | Linked from the supplier's homepage |
Verified fact: checked by us against an independent source. Supplier-stated: what the supplier says, not independently confirmed. User report: submitted by a user. Editorial assessment: our judgement. Spotted an error? Request a correction.
Supplier history
- 28 Sept 2026ScoreTransparency Score changed from 4.5 to 6.5Scoring methodology updated
- 25 Sept 2026CatalogueNew listing: KLOW 80mg (80mg)
- 25 Sept 2026CatalogueNew listing: BPC-157 + TB-500 Blend 10mg (10mg)
- 25 Sept 2026CatalogueNew listing: BPC-157 + TB-500 + GHK-Cu
- 25 Sept 2026CatalogueNew listing: NAD+ 1000mg (1000mg)
- 25 Sept 2026CatalogueNew listing: BPC-157 10mg (10mg)
- 25 Sept 2026CatalogueNew listing: Glutathione 1500mg (1500mg)
- 25 Sept 2026CatalogueNew listing: Kisspeptin 5mg (5mg)
- 24 Sept 2026ScoreTransparency Score changed from 5.0 to 4.4Integrity pass: validated data changed
- 23 Sept 2026ScoreTransparency Score changed from 2.5 to 5.0Importer evidence pass: testing claims, contact, company identity, domain age, logos
- 23 Sept 2026ListingSupplier added to the directoryFound in search results and read from its own website by the catalogue importer. Pending editorial review.
How PepFinder rates suppliers
What the rating and the customer rating each measure
The PepFinder rating (out of 10) is our own assessment of a supplier across reliability, product selection, pricing, delivery, customer service, website, payment options, packaging and how much information the supplier makes available. Each part is scored from what we can observe on its website, from public records and from customer reviews; parts we cannot observe are left unscored rather than marked down, and the rating is only shown once enough of them are known. It can move as more of the inputs become available.
The customer rating (out of 5 stars) is simply the average of approved customer reviews, shown from three reviews. Reviews are moderated before publication and suppliers can reply but not remove them.
The price comparison puts each listing's price per milligram against the median across every tracked supplier listing the same peptide in the same currency and serving the same region, so a UK store is measured against stores a UK buyer could order from. Prices are never converted between currencies. Suppliers cannot pay to change any of this; claiming or verifying a profile does not change the rating either.
Transparency Score
Out of 10 · methodology v1 · updated 9 Oct 2026 · 50% of criteria assessed
Testing, documentation and business transparency. Separate from the PepFinder Score. Paid plans and sponsorship cannot change it. How it is calculated
Show every factor
Testing transparency — 4.6
- ◐ Links a certificates-of-analysis page (not yet reviewed by us)12.5/25
- ? COAs are batch-specificnot assessed
- ✓ States third-party (independent) testing20/20
- ✕ Names the testing laboratories0/10
- ? Laboratory accreditation is identifiablenot assessed
- ✕ COAs reviewed by us in the last 12 months0/15
Contact transparency — 10.0
- ✓ Contact details are public15/15
- ? Manufacturing/source location disclosednot assessed
Documentation — 5.2
- ✓ Sourced evidence on record40/40
- ◐ Share of evidence independently verified4.3/30
- ? Batch numbers are publicnot assessed
- ✕ A testing document checked in the last 6 months0/15
User reviews
No approved reviews yet.
Customer service
Not yet assessed by the editorial team.
Shipping transparency — 5.0
- ? Shipping policy is clearnot assessed
- ✕ Delivery estimate stated0/30
- ✓ Shipping destinations listed30/30
Longevity — 3.2
- ✓ Earliest recorded activity 0.7 years ago
Policy transparency — 10.0
- ? Refund policy is clearnot assessed
- ? Terms of sale are clearnot assessed
- ✓ Refund or returns policy published20/20
- ✓ Terms of sale published20/20
- ✓ Privacy policy published20/20
Compare Flex Peptides with other suppliers
| Supplier | Rating | Customer rating | Prices | Products | |
|---|---|---|---|---|---|
 Research Peptides | 6.3 | No reviews yet | 8% above | 74 | Visit store |
 UK Peptide Lab | 7.2 | No reviews yet | 3% below | 57 | Visit store |
 Simply Peptides | 8.1 | No reviews yet | 37% below | 62 | Visit store |
We may earn a commission. How this works
Flex Peptides vs Research PeptidesFlex Peptides vs UK Peptide LabFlex Peptides vs Simply PeptidesAll alternatives to Flex Peptides
Flex Peptides: common questions
Is Flex Peptides legit?
We cannot vouch for any supplier, but we can report what the record shows. Flex Peptides meets 3 of the 8 checks we make, with nothing flagged. Each check, and its source, is listed on this page.
Where is Flex Peptides based?
Our records place Flex Peptides in United Kingdom.
Which countries does Flex Peptides ship to?
Flex Peptides states that it ships to United Kingdom. Check the supplier's own shipping policy before ordering.
Does Flex Peptides publish certificates of analysis?
Flex Peptides states that its products are independently tested, links a certificates-of-analysis or lab-results page. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
Ready to shop at Flex Peptides?
- Large range with 21 listed products
- Refund or returns policy published
We may earn a commission. How this works
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This page provides supplier and market information only and is not medical advice. Disclaimer