Vendor review · #4 of 24
GenPeptide review
Checked October 1, 2026 · No commercial relationship with this vendor. Links to vendors are marked as sponsored.
Score 100/100 · position 4 of 24
Excellent
Indiana-based WooCommerce shop (operated by Debonaire LLC d/b/a GP Research) selling retatrutide as "Reta-GP (GLP-3RT)" in 6, 10, 12, 24 and 48 mg vials and 5-vial kits, shipped from the US mainly via UPS. Recent Janoshik reports (September 2026) cover the 6 mg and 10 mg batches, plus endotoxin, heavy-metal and sterility tests.
Worth knowing (not scored)
- Product page names the compound only as Reta-GP (GLP-3RT) but lists CAS 2381089-83-2 (retatrutide) and molecular weight 4731.33; the Janoshik reports identify the content as retatrutide.
- Janoshik reports show overfill: 6 mg batch measured 7.27-7.60 mg; 10 mg batch measured 11.53-11.95 mg.
- Janoshik's verification page confirmed that task 231530 with its key is in the lab database, but the full report page was blocked by Cloudflare, so the content match could not be confirmed; task 231965 verification was blocked.
- 10 mg batch (GP-3P1008192026-04) endotoxin result 6.881 EU/vial; 6 mg batch <1 EU/vial. Heavy metals not detected and sterility PASS for both batches.
- COA Lookup page also lists Reta-GP 12 mg (lot GPRET12070726, tested 07/16/2026), 24 mg (GPRET24051626, 05/22/2026) and 48 mg (GPRET48030526, 03/13/2026); the lab for these was not checked.
- Also sells a Reta / Cagri 12.5/2.5 mg blend ($120), not counted as a retatrutide row.
- Phone (219) 319-9517 (text or call) shown on product pages.
Points in its favor
- Wide range of strengths from 6 mg to 48 mg plus kits
- Recent Janoshik purity, endotoxin, heavy-metal and sterility reports for current batches
- Legal entity and governing state named in Terms
- Card, ACH and crypto checkout
- Same-day dispatch before 1 PM EST, free shipping over $200
Points against
- Code name (Reta-GP / GLP-3RT) rather than "retatrutide" on the product page
- Janoshik report pages could not be opened to confirm content
- Strict damaged-only refund policy with a 72-hour window
- No street address shown on the site
Retatrutide prices
| Product | Price | Per mg | Stock |
|---|---|---|---|
| Reta-GP (GLP-3RT) 6mg | $45.00 | $7.50/mg | In stock |
| Reta-GP (GLP-3RT) 10mg | $60.00 | $6.00/mg | In stock |
| Reta-GP (GLP-3RT) 12mg | $75.00 | $6.25/mg | In stock |
| Reta-GP (GLP-3RT) 24mg | $115.00 | $4.79/mg | In stock |
| Reta-GP 5-Vial Kit (5 x 6mg) | $180.00 | $6.00/mg | In stock |
| Reta-GP (GLP-3RT) 48mg | $200.00 | $4.17/mg | In stock |
| Reta-GP 5-Vial Kit (5 x 10mg) | $240.00 | $4.80/mg | In stock |
| Reta-GP 5-Vial Kit (5 x 12mg) | $300.00 | $5.00/mg | In stock |
| Reta-GP 5-Vial Kit (5 x 24mg) | $440.00 | $3.67/mg | In stock |
| Reta-GP 5-Vial Kit (5 x 48mg) | $800.00 | $3.33/mg | In stock |
Prices in US dollars as shown on the GenPeptide website on October 1, 2026, before shipping and any sales tax.
Shipping details confirmed — 20/20
- Ships from inside the US; delivery Standard 3-5 business days; expedited 2-4 business days; next day 1-2 business days (checkout labels); cost Standard $10, Expedited $15, Next Day $45 (checkout rates for a Texas address); free over $200
Ships from: inside the US. Carriers: UPS, USPS, FedEx. Dispatch: Same day for orders placed before 1:00 PM EST on business days. Delivery: Standard 3-5 business days; expedited 2-4 business days; next day 1-2 business days (checkout labels). Cost: Standard $10, Expedited $15, Next Day $45 (checkout rates for a Texas address). Free shipping over $200. UPS is the primary carrier; USPS or FedEx used as needed. International and APO/FPO shipping only case by case.
Payment methods listed — 15/15
- Payment methods listed: card, ACH / bank transfer, cryptocurrency
Payment options: card, ACH / bank transfer, cryptocurrency. Store API checkout lists three gateways: NMI (card processor), Green Money (eCheck/ACH) and BTCPay (crypto). Returns: All sales final; refund or replacement only for damaged, incorrect, missing or lost-in-transit items reported within 72 hours, at the shop's discretion. Chargebacks lead to a blacklist.
Quality claims stated — 25/25
- 2 retatrutide lab reports from a named lab, latest dated 2026-09-09
| Lab | Test | Task / ID | Strength | Batch | Result | Tested |
|---|---|---|---|---|---|---|
| Janoshik Analytical | Identity & purity | #231530 | 6 mgmeasured 7.38 mg | GP-3P0608262026-03 | 99.6% | September 9, 2026 |
| Janoshik Analytical | Identity & purity | #231965 | 10 mgmeasured 11.71 mg | GP-3P1008192026-04 | 99.76% | September 1, 2026 |
| Janoshik Analytical | Endotoxin | #231967 | 10 mg | GP-3P1008192026-04 | See report | — |
| Janoshik Analytical | Endotoxin | #231531 | 6 mg | GP-3P0608262026-03 | See report | — |
Lab details are as published by the vendor. We have not yet matched these reports on the lab’s own verification page; the lab’s site blocks automated checks, so this is done by hand.
Contact info listed — 15/15
- Contact details listed: email, phone, address
Legal entity: Debonaire LLC (d/b/a GP Research), registered in Indiana, file number 202512011947800, status active. Address on record: 1424 Briar Crossing Dr, Dyer, IN 46311-1651 (head office address per OpenCorporates). Registry record. Terms & Conditions, Shipping and Returns policies name Debonaire LLC d/b/a GP Research; Terms are governed by Indiana law. Matched to an Indiana LLC on OpenCorporates (assumed business name certificates filed Dec 2025 and May 2026); the Indiana state registry itself was not opened.
Independent rating found — 15/15
- Trustpilot 4.4 from 30 reviews
- Trustpilot: 4.4 from 30 reviews (checked October 1, 2026) — view
Perks confirmed — 10/10
- Free US shipping on orders over $200; free standard shipping over $200; volume discounts of 5-15% on 5+ vials; 20% off 5-vial mini kits via Build-A-Kit; rewards points
Sources
Everything above comes from these pages, checked on October 1, 2026:
- genpeptide.com/
- genpeptide.com/wp-json/wc/store/v1/products?search=reta&per_page=50
- genpeptide.com/wp-json/wc/store/v1/products?type=variation&parent=7173&per_page=50
- genpeptide.com/wp-json/wc/store/v1/products?type=variation&parent=11577&per_page=50
- genpeptide.com/wp-json/wc/store/v1/cart
- genpeptide.com/product/reta-gp-glp-3rt/
- genpeptide.com/product/reta-gp-glp-3rt-kit/
- genpeptide.com/product/reta-cagri/
- genpeptide.com/coa-lookup/
- genpeptide.com/shipping-and-delivery-policy/
- genpeptide.com/returns-and-refunds-policy/
- genpeptide.com/terms-and-conditions/
- genpeptide.com/about/
- genpeptide.com/customer-help/
- genpeptide.com/contact-us/
- genpeptide.com/build-a-kit/
- genpeptide.com/blog/
- genpeptide.com/wp-content/uploads/2026/09/Test-Report-231530.png
- genpeptide.com/wp-content/uploads/2026/09/Test-Report-231531.png
- genpeptide.com/wp-content/uploads/2026/09/Test-Report-231532.png
- genpeptide.com/wp-content/uploads/2026/09/Test-Report-231533-1.png
- genpeptide.com/wp-content/uploads/2026/09/Test-Report-231965.png
- genpeptide.com/wp-content/uploads/2026/09/Test-Report-231966-1-1.png
- genpeptide.com/wp-content/uploads/2026/09/Test-Report-231967.png
- genpeptide.com/wp-content/uploads/2026/09/Test-Report-231968.png
- janoshik.com/verification/?task=231530&key=NF36FDKYCI5J
- janoshik.com/verification/?task=231965&key=I7W75CW84FN6
- www.trustpilot.com/review/genpeptide.com
- opencorporates.com/companies/us_in/202512011947800
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