Yes, we recommend products and some links are affiliate links. We own it plainly: when a peptide has real evidence and is legal over the counter, we tell you where to buy it (iHerb, RC Peptides) and we earn a commission. When it doesn't, we tell you to avoid it — even when that would pay more. Here's the rule, no spin.
An affiliate link means a purchase made through it may pay us a commission, at no extra cost to you. It changes neither our analysis nor our verdicts. A product only appears as a link if it meets three cumulative conditions:
If a product fails any of the three, it gets no link — whatever the commission on offer.
People often ask us which peptides are "worth it." Here's our ranking, based on evidence, not commissions.
| Peptide | Human evidence | Status | Affiliate link? |
|---|---|---|---|
| Oral hydrolysed collagen | 2026 meta-analysis (hydration, brightness) | Recommended | Yes — iHerb |
| Argireline (topical) | Wang et al.: −48.9% wrinkles vs 0% placebo | Recommended | iHerb + RC (topical) |
| Matrixyl (topical) | Palmitoyl pentapeptide, wrinkle trials | Recommended | iHerb + RC (topical) |
| GHK-Cu (copper, topical) | Decent cosmetic data | Topical only | iHerb + RC (topical) |
| GLP-1 (sema / tirzepatide) | Phase 3 RCT, NEJM | Prescription | No (drug) |
| Thymosin α1 | Real clinical dossier (adjuvant) | Drug | No (prescription) |
| CJC-1295 | 2006 human RCT — but PK only (↑ GH/IGF-1), no proven health benefit | Partial evidence | No (unapproved injectable) |
| BPC-157 | Animal only · 0 human RCT | Ruled out | Never |
| TB-500 | No convincing human trial | Ruled out | Never |
| Ipamorelin | Pharmacology only · efficacy unproven | Ruled out | Never |
| AOD-9604 | Failed anti-obesity trial | Ruled out | Never |
| Semax / Selank | Small, non-replicated studies | Ruled out | Never |
Three tiers: recommended (evidence + legal + link), partial evidence (limited human data — we discuss it but no purchase link), ruled out (no data or danger). Among "wellness" injectables, none reaches "recommended": the best-placed one (CJC-1295) stays in partial evidence, no link.