Frequently Asked Questions

We accept Visa, Mastercard, American Express, and Discover through our secure Stripe payment gateway. All transactions are encrypted with SSL/TLS and processed through PCI-DSS compliant infrastructure.

Yes. Every product includes automatic bulk pricing tiers — save 3% when buying 3 units, 5% when buying 5, and 10% when buying 10 or more. For larger institutional orders, visit our Wholesale & Institutional Orders page or email support@ai-peptides.com.

All orders must be placed through our website to ensure proper processing, payment security, and order tracking. Our support team is available via email for pre-order questions.

All Ai-PEPTIDES products exceed 99% purity, verified through High-Performance Liquid Chromatography (HPLC) and Mass Spectrometry (MS) analysis. Each batch includes a Certificate of Analysis. Visit our Quality Assurance page for full details.

Yes. Every batch comes with a COA documenting HPLC purity results and MS identity confirmation. COAs are accessible on individual product pages under the "Certificates" tab, and on our Certificates of Analysis page.

All Ai-PEPTIDES products are synthesized in GMP-compliant facilities within the United States using both automated and manual solid-phase peptide synthesis (SPPS) technology.

All peptides ship in lyophilized (freeze-dried) powder form in sealed glass vials. This format provides maximum stability during transit and extended shelf life. See our Storage & Handling Guidelines for reconstitution instructions.

Orders placed before 2:00 PM EST ship the same business day. USPS Priority Mail arrives in 2–3 business days. Express and overnight options are available. Full rates on our Shipping & Policies page.

At this time, we ship within the United States only. International shipping may become available in the future.

Yes. During warmer months, all orders include insulated packaging with cold packs to maintain product integrity. Lyophilized peptides are inherently more stable than reconstituted solutions during transit.

Unreconstituted lyophilized peptides: -20°C for long-term or 2–8°C for short-term. Keep away from sunlight and moisture. Once reconstituted, refrigerate and use within 30 days. Full guidance on our Storage & Handling page.

When stored at -20°C, lyophilized peptides remain stable for 24 months or longer. At 2–8°C, most remain stable for 3–6 months. Always check the expiration date on your COA.

Contact us within 48 hours with photos of the damage. We will ship a replacement at no charge. Full details on our Returns & Refunds page.

Due to the nature of research chemicals, we cannot accept returns of opened or unsealed products. Unopened, sealed products may be returned within 14 days for store credit.

Yes. Research peptides are legal to purchase in the United States for in-vitro laboratory research purposes. They are not approved by the FDA for human use and may not be marketed as drugs, supplements, or food products. Buyers are responsible for complying with all applicable local regulations.

No specific license is required for purchasing research-grade peptides in the United States. By placing an order you confirm that all products will be used exclusively for legitimate research purposes and in accordance with applicable laws.