All four vendors make the same research-use-only claim. What sets them apart is how much the rest of each site contradicts it. BenchGrade builds compliance into checkout. PX1 floods search with dosing content. NextGenPeps relies on affiliates. Peptide Sciences was the market leader, and its site was full of human-use signals until it closed in March 2026.
An affiliate-led store with no blog, a strong compliance page and a public COA library. Its product pages and reviews undercut that compliance page.
The former category default. It won on search and brand trust, sold GLP-1 drugs under their real names, and shut down with no public explanation.
Treats compliance as a selling point: recorded attestations, Stripe payments and a lab-test guarantee. Also sells white-label stores to new brands.
An SEO machine with 5,686 sitemap URLs, mostly generated from templates. Its dosing charts and consumer formats contradict its own legal pages.
These are the kinds of evidence regulators and payment processors use to judge a product's real intended use. A disclaimer does not cancel them.
| Signal | NextGenPeps | Peptide Sciences | BenchGrade | PX1 Research |
|---|---|---|---|---|
| Approved-drug names | ~Codes, but GLP-RT page names retatrutide | ✓Semaglutide, tirzepatide; "Ozempic" synonym | ~Codes; glossary names two of four | ✓Codes on store, real names in SEO |
| Dosing or administration guidance | –None found | ✓"Timing the injection" | –Reconstitution math only | ✓Insulin-unit charts, "2 mg = 40 units" |
| Consumer formats | ~BPC-157 capsules, BAC water | ~Outcome-named capsules | –Lyophilized vials only | ✓Sublingual strips, nasal sprays |
| Health or outcome claims | ✓Leaky gut, Crohn-type, tendon repair | ✓"Slow the aging process" | ~Recovery and sleep quiz funnels | ✓24.2% primate weight loss |
| Reviews or copy implying personal use | ✓"No problem reconstituting" | ✓Side-effect Q&A for users | –None found | ✓Clinic, med spa, telehealth pitches |
| Recurring personal supply | –Restock emails only | ~Loyalty program | –None found | ✓"Ships every 30 days" |
| Claims that contradict each other | ~10% vs 20% commission | ✓T&Cs vs product pages | –None found | ✓US-only vs 20 country pages |
| Signals present | 2 full · 3 partial | 5 full · 2 partial | 0 full · 2 partial | 7 full · 0 partial |
| Dimension | NextGenPeps | Peptide Sciences | BenchGrade | PX1 Research |
|---|---|---|---|---|
| Status | Live | Closed March 6, 2026 | Live | Live (RTRC Investments LLC) |
| Buyer attestation | Mixed Footer disclaimers and a compliance page |
Mixed T&Cs, 18+, lab-affiliation warranty |
Lower Recorded at checkout with a timestamp, 18+ |
Mixed Clickwrap with logged IP and device, 21+ |
| GLP naming | Mixed GLP-RT, GLP-TZ, GLP-1s |
Higher Real names, brand synonyms |
Mixed GLP-1 S, 2 T, 3 R, AMY-A |
Higher PX13-R on store, "Buy Retatrutide" in SEO |
| Proof of quality | Public COA library, 99% purity | HPLC and MS tabs per product | COA per lot by QR code, plus an independent-lab guarantee | COA per lot by QR code, ILS ISO 17025, endotoxin reports |
| Content footprint | 95 URLs, no blog | Pillar homepage, bylined research hub, YouTube | 249 URLs; a technical handling library | 5,686 URLs; 4,875 generated from templates |
| Paid acquisition | None found (GTM, CrazyEgg) | None found | Google Ads conversion tag | None found (GA4) |
| Affiliate terms | Up to 20% lifetime, 30-day cookie, GoAffPro | None found | 20% on every order + 3% second level, 60-day cookie | 18%, 30% above $60K/month, daily payouts |
| First-order offer | 10% for email signup | 10% account credit | 10% with partner code; Buy 2, Get 2 Free | PX1USA, 15% off |
| Free shipping | $150+ | Not recorded | $100+ (Next Day at $500) | $200 or $300 (site conflicts) |
| Payments | Mixed Cards, PayPal, Apple Pay; "may vary" |
Mixed Cards; ACH payable to "P-Sciences" |
Lower Stripe cards and wallets |
Higher Cards, ACH/wire, crypto |
| Refunds | None; reships only | All sales final | Full refund on request | All sales final |
Highlighted rows are the main source of traffic. None of the four runs Meta ads; only BenchGrade shows paid search.
URLs listed in each live sitemap.xml on October 3, 2026. Peptide Sciences is closed, and its archive gives no full count.
See how Aion puts this into practice: the 26-week SEO plan →