Simply Peptides
Is Simply Peptides legit? What the records show
We have tracked Simply Peptides since Sep 2026 and follow 27 of their products, covering 24 peptides. Prices run from £14.99 to £99.99. On their own certificates, 6 of 7 measured vials are more than 3% over or under the amount on the label.
Check it yourself: find the report number or QR code on a certificate and look it up on the lab's own website.
Higher than 92% of the 894 shops we score
Max 60 until we lab-test them.
The shaded part is the shops Simply Peptides scores higher than.
Our lab testLocked / 40Not tested yet
We have not sent a Simply Peptides product to an independent lab yet, so these 40 points are locked. The lab report will go on this page when we do.
Reviews6.4 / 20High rating, few reviews
External review sites: ★ 4.5 ± 0.1 average, from under 50 reviews. We show a range because sites round their ratings differently.
That gives 6.4 of 20. We discount review sites a little, so a strong record does not max this on its own.
Community4.5 / 15Little or cautious talk
Forum and Reddit talk is thin or cautious. Nobody has left a review on Peptide Scanner yet.
That gives 4.5 of 15.
Certificates17.3 / 255 of 24 peptides covered
Publishing: 12.4 of 15. We hold 10 lab certificates from their website, naming Janoshik. We found 7 of the 10 on the issuing lab's own website (not every lab has a public lookup). 5 of the 24 peptides we track have a matching certificate from an independent lab (any size counts). 0 of the 10 certificates include a contamination test (endotoxin, sterility or heavy metals). 4 of 8 dated certificates were issued in the last 6 months. Newest: Aug 2026 (3 months old). Oldest: Dec 2025.
Claims match: 4.9 of 10. Their own certificates against their claims: 1 of 7 measured vials are within 3% of the label (1 overfilled, 5 underfilled); 1 of 5 certificates fall below 98% purity.
Their claims against their certificates: 6 of 7 measured vials off label.
A certificate is the shop's own document. It is not our test.
Simply Peptides reviews
No reviews on Peptide Scanner yet.
Bought from Simply Peptides?
Write a reviewSimply Peptides prices
Checked 7 Nov 2026
Show all 27 prices ↓Showing all 27 prices
Ships to: United Kingdom
Their certificates vs their claims
No site-wide purity promise found on their website. Vial content is still checked against the label.
- certificates read
- 9
- vials outside ±3% of label
- 6 / 7
- beyond ±10% (major)
- 3
- site-wide purity claim to check
- None
How this is checked
- Vial content
- Measured net peptide content against the size on the label. Within ±3% is on label, 3 to 10% is off label, beyond ±10% is a major deviation (under- or overfilled). When a certificate weighs several vials of the batch, the vial farthest from the label is the one judged, and with several purity results the lowest counts. Blends are only checked when the certificate lists each component.
- Purity
- HPLC purity on each certificate against the purity the supplier promises site-wide on its own website. Up to 1 point below the claim is amber, more than that is red. Only a direct promise counts (“99%+ purity guaranteed”); explanations of what purity means, one product's figure and page code are not treated as a claim. A certificate that reports only a bound (“>99%”) is judged only when the bound meets the claim, and a specification line is never read as a result.
- Whose certificate
- A certificate is only read once our client-identity review has looked at it, and one issued to a different company is left out. A certificate issued to the company that runs the supplier's own website counts as the supplier's. A file hosted on another supplier's website is not counted for this one. Only peptide certificates are read: bacteriostatic water, acetic acid and other diluents are left out, and so are product data sheets, which state a specification rather than a batch result.
- Main impurity
- Shown when the certificate itemises it: a named impurity (TFA, deletion sequence, oxidation…) or the largest secondary peak in the HPLC peak table. Most certificates report only a purity figure, so the rest of the sample is not itemised.
- Score
- These checks are 10 of the 25 certificate points: vial content 7 (full credit within ±3%, half up to ±10%, none beyond, over- and underfilled alike), purity 3 (98% is the bar when a supplier advertises no figure). Fewer than 5 readable results gives half credit rather than a guess.
- Source and limits
- These are the supplier's own published certificates, read automatically from the PDF or image. Janoshik results tables are read twice from the image, cell by cell, and a figure the two readings disagree on is left out rather than guessed. A certificate covers one batch on one date. We have not tested these batches ourselves.
| Product | Label to measured | Purity | Main impurity | Lab | Certificate |
|---|---|---|---|---|---|
| BPC-157 5mg | 5mg → 5.84mg Overfilled +16.8% | 99.54% | 0.46% not itemised | janoshik | Open certificate BPC-157 5mg |
| GHK-CU 100mg | 100mg → 73.56mg Underfilled -26.4% | 99.365% | 0.64% not itemised | janoshik | Open certificate GHK-CU 100mg |
| Retatrutide 30mg | 30mg → 25.25mg Underfilled -15.8% | 99.854% | 0.15% not itemised | janoshik | Open certificate Retatrutide 30mg |
| GHK-Cu 50mg | 50mg → 46.8mg Under label -6.4% | Not read | Not itemised | janoshik | Open certificate GHK-Cu 50mg |
| Retatrutide 10mg | 10mg → 9.63mg Under label -3.7% | Not read | Not itemised | janoshik | Open certificate Retatrutide 10mg |
| Retatrutide 30mg | 30mg → 27.71mg Under label -7.6% | Not read | Not itemised | janoshik | Open certificate Retatrutide 30mg |
| Retatrutide 10mg | 10mg → 18.13mg Not checked | 92% | 8.00% not itemised | janoshik | Open certificate Retatrutide 10mg |
| TB500 5 mg | 5mg → 11.05mg Not checked | 99.746% | 0.25% not itemised | janoshik | Open certificate TB500 5 mg |
Show all 9 certificates read ↓Showing all 9 certificates read
| Product | Label to measured | Purity | Main impurity | Lab | Certificate |
|---|---|---|---|---|---|
| Tesamorelin 5mg | 5mg → 4.93mg On label -1.4% | Not read | Not itemised | janoshik | Open certificate Tesamorelin 5mg |
Simply Peptides FAQ
Is Simply Peptides legit?
We score Simply Peptides 28 of 60, from reviews, community posts and the certificates they publish. We have not lab-tested them yet. The reasons for each part of the score are in the verdict above.
Does Simply Peptides publish lab reports (COAs)?
Yes. We hold 10 certificates from their website. They cover 5 of the 24 peptides we track. Labs named on them: Janoshik. We found 7 of them on the lab's own website. A certificate is the shop's own document, not our test.
How much does Simply Peptides charge?
On 7 Nov 2026 we tracked 27 prices from £14.99 to £99.99. The cheapest is BPC-157 at £14.99. The full list is in the price table above.
Where does Simply Peptides ship?
They ship to United Kingdom.
Has Peptide Scanner tested Simply Peptides?
Not yet. Lab results are worth 40 points, and those stay locked until we test one of their products at an independent lab.
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