Everything you need before you order.

We require each verified supplier to publish third-party Certificates of Analysis (COA) for every batch — typically HPLC and mass spectrometry. We cross-check sourcing claims, lot traceability, and community reputation across r/Peptides and independent review threads before granting a verified badge.

Diamond and Premium listings are paid placements with enhanced profiles, exclusive deals, and priority placement. The verification standard is the same for all tiers — paid placement never substitutes for COA documentation.

Star ratings aggregate verified researcher purchases and public reddit/forum sentiment. Reddit reviews displayed on provider pages are real community threads pulled from public subreddits.

Common research peptides including BPC-157, TB-500, CJC-1295/Ipamorelin, Semaglutide, Tirzepatide, Retatrutide, GHK-Cu, NAD+, Epithalon, MOTS-c, PT-141, Selank, Semax, Sermorelin, Tesamorelin, and KPV. Browse the full peptide catalog on the homepage.

Yes — prices reflect each supplier's current public catalog rates per single vial (USD). Where suppliers offer bulk pricing or subscriptions, the deals page surfaces those discounts.

Pricing reflects purity grade, sourcing, packaging (lyophilized vs reconstituted), batch size, and overhead. Verified suppliers price within typical market ranges; outliers usually indicate either better bulk economics or quality compromises.

Tap any deal card to copy the promo code, then click 'Get deal' to be taken directly to the supplier's site. Apply the code at checkout — discount applies automatically when valid.

Yes — each card shows the days remaining. We refresh codes daily and remove expired offers. If you encounter an invalid code, please report it via the contact page.

Stackability depends on the supplier. Most allow one promo per order; some bulk discounts auto-apply on top of codes. The supplier's checkout page is the source of truth.

Most listed verified suppliers ship within 24–48 hours of payment, with 2–5 day USPS/UPS delivery domestically. Cold-chain shipping is standard for heat-sensitive compounds.

Yes — every verified supplier on PepSmarts ships discreetly to all 50 US states. International availability varies; check each supplier's profile for details.

Verified suppliers offer reshipment guarantees on damaged or missing product. Document with photos before contacting the vendor's support — most resolve within 1–2 business days.

Yes — research peptides are legal to purchase and possess in the US strictly for laboratory and in-vitro research. They are not FDA-approved for human or veterinary use.

No. All products listed on PepSmarts are sold for laboratory research use only — not for human consumption, ingestion, injection, or any clinical application. Always consult a licensed physician for medical advice.

Most US suppliers do not require a research license, but reserve the right to refuse any order they suspect is for non-research use. Some restricted compounds may require institutional verification.

Visit /advertise to apply. We review applicants for COA documentation, lot traceability, customer support quality, and shipping reliability before approving.

Diamond placement includes a full-bleed profile, featured deal slots, Reddit review showcase, priority placement on category and peptide pages, and an animated card on the homepage.

We earn through affiliate partnerships and paid listings. Our listing standards and ratings are independent — paid placement does not improve a vendor's review score or verification status.