United States · improvedpeptides.com · last reviewed 24 Sept 2026
PepFinder Score
ProvisionalElsewhere: 3.8★ on Trustpilot across 2 reviews, as read on 24 Sept 2026. Read them on TrustpilotTrustpilot’s figure, not ours; it does not affect the PepFinder Score.
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Each rating shows where it comes from. Automated data is what we read from the supplier's website and listings; customer ratings take over as reviews come in. No customer has reviewed this supplier yet. Be the first. Payment for a listing never changes a rating.
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.
Named company (Not known)
Not yet checked.
Website history (Not known)
Domain age not yet recorded.
Ways to get in touch (Not known)
Contact channels not yet recorded.
Written policies (In place)
terms published.
Independent testing (Not known)
Improved Peptides states that its products are independently tested, links a certificates-of-analysis or lab-results page, names Freedom Diagnostics. 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 (In place)
Card payment shown on the website, which usually allows a chargeback if an order goes wrong.
Customer reviews (Not known)
No reviews on PepFinder yet.
| Product (as listed) | Price | Per mg | Stock |
|---|---|---|---|
| US$75.00 As listed | — | ||
| US$69.00 10mg | US$6.90 | ||
| US$120.00 20mg | US$6.00 | ||
| US$52.00 5mg | US$10.40 | ||
| US$65.00 10mg | US$6.50 | ||
| US$45.00 As listed | — | ||
| US$69.00 10mg | US$6.90 | ||
| US$79.00 As listed | — | ||
| US$56.00 10mg | US$5.60 | ||
| US$65.00 10mg | US$6.50 | ||
| US$56.00 10mg | US$5.60 | ||
| US$56.00 10mg | US$5.60 | ||
| US$85.00 As listed | — | ||
| US$150.00 10mg | US$15.00 | ||
| US$105.00 As listed | — |
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.
Pros and cons appear here once at least 5 customers have rated the same part of the experience. We don't write them ourselves. Write a review
United States · Estimated delivery times: 2 to 3 business days.
Tracked since Sept 2026
United States
Tracked since Sept 2026
United States
Tracked since Sept 2026
Improved Peptides vs Instant PeptidesImproved Peptides vs Iron Core ResearchImproved Peptides vs IRON Peptides
For readers who want the detail: what Improved Peptides says about testing, the certificates of analysis we hold, and our Transparency Score. This is separate from the PepFinder Score above.
Transparency review · updated 24 Sept 2026
Improved Peptides is a United States-based research-peptide supplier listing 13 of the peptides we track, priced in USD. Where it does well: states independent testing and names Freedom Diagnostics; links a certificates-of-analysis page (not yet reviewed by us). Where it falls short: prices 38% above the market median per mg; we found no company name or registration number on its website. Our Transparency Score is 4.2/10, provisional until more of our criteria have been assessed.
Transparency Score
Testing transparency
Names Freedom Diagnostics
Names Freedom Diagnostics
6.1
Business transparency
Company identity, contact details, sourced evidence
Company identity, contact details, sourced evidence
3.2
Shipping and policies
Delivery information, refund, terms and privacy
Delivery information, refund, terms and privacy
3.3
Longevity
No outside date yet
No outside date yet
–
Customer reviews
No reviews yet
No reviews yet
–
Value for money· not scored
38% above the market median per mg
38% above the market median per mg
4.1
Out of 10. A dash means not assessed yet. Value compares listed prices per mg with other suppliers in the same currency and does not affect the score. How we score
Out of 10 · methodology v1 · updated 24 Sept 2026 · 47% of criteria assessed
Testing, documentation and business transparency. Separate from the PepFinder Score. Paid plans and sponsorship cannot change it. How it is calculated
Testing transparency — 6.1
Business transparency — 2.7
Documentation — 3.8
User reviews
No approved reviews yet.
Customer service
Not yet assessed by the editorial team.
Shipping transparency — 0.0
Longevity
No domain record or founding date researched yet.
Policy transparency — 6.7
Improved Peptides states that its products are independently tested, links a certificates-of-analysis or lab-results page, names Freedom Diagnostics. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
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.
We cannot vouch for any supplier, but we can report what the record shows. Improved Peptides meets 3 of the 9 checks we make, with nothing flagged. Each check, and its source, is listed on this page.
Our records place Improved Peptides in United States.
Improved Peptides states that its products are independently tested, links a certificates-of-analysis or lab-results page, names Freedom Diagnostics. PepFinder has not yet collected or reviewed any of its certificates, so this is the supplier's own claim.
The website shows: Visa, Mastercard, Card, American Express, PayPal, Zelle, Venmo.
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 | 34 minutes ago |
| Company behind the website | Not known | — |
| Company registration | Not known | — |
| Contact details | Known, sourced | 34 minutes ago |
| Business address | Not known | — |
| Shipping destinations | Not known | — |
| Stated delivery time | Not known | — |
| Payment methods | Known, sourced | 34 minutes ago |
| Customer support channels | Not known | — |
| Refund or returns policy | Not known | — |
| Terms of sale | Known, sourced | 34 minutes ago |
| Domain age | Not known | — |
| Certificates of analysis | Known, sourced | 34 minutes ago |
| Independent testing | Known, sourced | 34 minutes ago |
| Testing laboratory | Known, sourced | 34 minutes ago |
| Public batch numbers | Not known | — |
| Product catalogue | Known, no source shown | — |
| Prices | Known, no source shown | — |
| Topic | Claim | Basis | Source type | Captured | Last checked | Source |
|---|---|---|---|---|---|---|
| Company identity | Business location recorded as US. | Supplier-stated | Supplier website | 24 Sept 2026 | 34 minutes ago | Source |
| Contact details | The website publishes an email address. | Supplier-stated | Supplier website | 24 Sept 2026 | 34 minutes ago | Publishes contact details |
| Certificates of analysis | The supplier's website links to certificates of analysis or lab results. Documents are not reviewed until an editor checks them. | Supplier-stated | Supplier website | 24 Sept 2026 | 34 minutes ago | Links a COA / lab results page |
| Testing claim | The supplier states its products are independently tested: “…Research Peptides with Independent Lab Testing…” | Supplier-stated | Supplier website | 24 Sept 2026 | 34 minutes ago | States independent testing |
| Testing claim | The supplier names Freedom Diagnostics in connection with testing: “…Lab Freedom Diagnostics .…” | Supplier-stated | Supplier website | 24 Sept 2026 | 34 minutes ago | Names Freedom Diagnostics |
| Terms | The website links to its terms page. | Supplier-stated | Supplier website | 24 Sept 2026 | 34 minutes ago | Linked policy page |
| Pricing | 15 peptide listings read from the supplier's own catalogue. Prices and stock are as the site listed them at capture. | Supplier-stated | Supplier website | 24 Sept 2026 | 34 minutes ago | Supplier's public product catalogue |
| Other | The website links to its privacy page. | Supplier-stated | Supplier website | 24 Sept 2026 | 34 minutes ago | Linked policy page |
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.
This page provides supplier and market information only and is not medical advice. Disclaimer
