Optima Supply scored across our four rubric factors — COA practices (40%), reputation, transparency, and operations (20% each).
COA practices 40%10/10
Reputation 20%7/10
Transparency 20%7.5/10
Operations 20%8/10
Weighted factor result: 8.5/10. The published score follows the weighted result after rounding.
8.5/10Quality rating
233Public reviews
★ 4.7/5Trustpilot average
47Catalog
15%Reader discount
Evidence summary
Why Optima Supply is rated 8.5/10
Our conclusion
Yes on the testing — it's one of the more thorough programs we track. Optima publishes batch-linked COAs through a dedicated /lab-results library and QR codes on every vial, and the reports come from three named third-party labs (Janoshik, Chromate Labs, ILS Labs) across a full panel including endotoxin, heavy-metals, and sterility. We confirmed real reports at 99%+ purity, all panels passing.
The main caveats sit outside the lab work: reputation is real but single-platform (233 positive Trustpilot reviews, no Reddit/Eroids history yet), and the GLP line uses codenames — Opti-(R)=Retatrutide, Opti-(S)=Semaglutide, and Opti-(C)=Cagrilintide are confirmed, while Opti-(T)=Tirzepatide is our read of the pattern. US-based with a disclosed Milwaukee address; pays by card (Visa/MC/Amex/Discover) or Venmo. Code PEPTIDEPRICES gives customers 15% off.
Verification notes
What we reviewed, with the limits of that evidence kept explicit.
01
Company & checkout
Optima Supply (optimasupply.is) is a US-based (Milwaukee, WI) research-peptide supplier whose clear strength is verification. It runs a dedicated /lab-results library and puts a QR code on every vial linking to that batch's Certificate of Analysis, and the testing isn't from one lab but three named third parties — Janoshik, Chromate Labs, and ILS Labs. The panel is unusually complete: HPLC purity and identity, two or more endotoxin screens, heavy-metals, TAMC/TYMC sterility, and multi-vial dosage-accuracy checks rather than a single spot test. We read real reports across the catalog and confirmed 99%+ purities (for example Opti-(T) 10mg at 99.66% with passing endotoxin and sterility panels, the CagriSema blend at 99.91%, and Cagrilintide at 99.93%).
02
COA review
That public, multi-lab, full-panel, per-batch testing is exactly what our 40% COA factor rewards most, and it anchors the score at the top of the range. The rest of the picture is solid rather than exceptional: reputation is real but single-platform (233 positive Trustpilot reviews, no Reddit/Eroids corroboration), transparency is good (a disclosed Milwaukee address, branded email and phone, a wholesale program, and a roughly two-year domain), and operations are strong (real card processing plus Venmo, deep stock). The GLP-1/2/3 line is sold under Opti-(R/S/T/C) codenames — we decoded Opti-(R)=Retatrutide and Opti-(S)=Semaglutide from the product slugs, Opti-(C)=Cagrilintide from the CagriSema COA, and inferred Opti-(T)=Tirzepatide from the pattern and its size ladder.
Standout public COA program: a dedicated /lab-results library plus per-vial QR-code access to batch-specific certificates, drawing on three named third-party labs — Janoshik, Chromate Labs, and ILS Labs
Genuinely full testing panel — HPLC purity + identity, 2+ endotoxin screens, heavy-metals, TAMC/TYMC sterility, and multi-vial dosage-accuracy — verified from real reports at 99%+ (Opti-(T) 10mg 99.66%, CagriSema 99.91%, Cagrilintide 99.93%)
Real, single-platform reputation: 233 positive Trustpilot reviews (shipping, customer service, product quality) plus a mention in outliyr's legit-vendors roundup
US-based with a disclosed physical address (Milwaukee, WI), branded email + phone, a wholesale program, and real card processing (Visa/MC/Amex/Discover) plus Venmo
PeptidePrices readers receive 15% off with code PEPTIDEPRICES
Watch-outs
Reputation rests on a single platform (Trustpilot) with no Reddit/Eroids/Meso-Rx track record yet
GLP-class products use compliance codenames (Opti-(R/S/T/C)); R/S/C are proven from slugs/COAs, but Opti-(T)=Tirzepatide is inferred and still to be confirmed with the vendor
Ownership isn't named, and the on-site COA identity labels use the codenames rather than the plain compound names
Sourced customer review highlights
Positive
★★★★
The exact-domain profile averages 4.7/5 across 233 reviews. Common themes include fast delivery, responsive support, and repeat orders. Customer reviews do not verify composition or vial content.
Yes — Optima Supply scores 8.5/10 in our methodology (40% COA practices, 20% reputation, 20% transparency, 20% operations) and is rated "Trusted".
Is optimasupply.is legit? Are Optima Supply reviews trustworthy?
optimasupply.is is the official website of Optima Supply. Optima Supply scores 8.5/10 in our published evidence rubric (Trusted). Trustpilot currently shows 4.7/5 from 233 public reviews. Customer opinions do not verify composition or laboratory quality.
Does Optima Supply publish COAs?
COA status: COA ✓ with third-party testing. Standout public COA program: a dedicated /lab-results verification library plus per-vial QR-code access to batch-specific Certificates of Analysis on every product. Testing draws on THREE named third-party labs — Janoshik, Chromate Labs, and ILS Labs — across a genuinely full panel: HPLC purity + identity, 2+ endotoxin screens, heavy-metals, TAMC/TYMC sterility, and multi-vial dosage-accuracy validation (batch-wide, not a single spot-check). Real report data verified across many SKUs at 99%+ pur
Is there a Optima Supply discount code?
Yes — use code PEPTIDEPRICES for the current PeptidePrices partner discount. Open the vendor through the referral link, then enter the code separately at checkout and confirm the discount before payment.
Where is Optima Supply based?
Optima Supply operates out of Milwaukee, WI.
How does Optima Supply compare to other peptide vendors?
See our /vendors page for the full ranked list. We use the same rubric for every vendor on the site, so direct comparison is straightforward.
How we rate vendors
Our quality scores are based on a weighted rubric: 40% COA practices (named third-party lab, batch linkage, public availability), 20% community reputation, 20% transparency, and 20% operations. We are independently owned; affiliate status is not a scoring factor.
PeptidePrices is independently owned and participates in Optima Supply's affiliate program. We may be paid for qualifying purchases through our links. Optima Supply cannot edit or approve this review, and the relationship does not add points to its score.
