The questions we get most often, grouped by topic. Can't find what you need? Contact support.
Browse the catalog or use the search box. Click "Add to cart" on any product page, then go to Cart when ready to check out. You'll need an account to complete checkout (free, takes 30 seconds).
No. Account creation is required to enforce our verified-buyer review policy. The account also lets you track orders, manage subscriptions, and use the same payment method for reorders.
No order minimum. Free shipping kicks in at $150.
Yes, up to 1 hour after placement, via your Orders page. After 1 hour, the order has typically been pulled for shipment and cannot be modified.
Yes for orders over $2,500. Email support@peptide.best with your needs.
Visa, Mastercard, American Express, Discover; ACH bank transfer; Bitcoin (BTC), Ethereum (ETH), USDC. See payment methods for fees and limits.
Standard ground: 5–7 business days. Express: 2 business days. Most orders ship within 1 business day of payment confirmation.
Limited international shipping is available to Canada, UK, EU, Australia, and Japan. Customs duties are the buyer's responsibility. Some products cannot be shipped internationally — check the product page.
Temperature-controlled shipment for products that require refrigeration (e.g., GLP-1 agonists like semaglutide). Cold-chain shipping is included free on all temperature-sensitive products from verified vendors. See shipping policy.
Yes on orders $150+. Below $150, ground is $9.99 and express is $24.99.
If tracking has not updated in 7 business days, contact support. We'll file a carrier claim and ship a replacement.
15 days from delivery, unopened and unused. Some products are non-returnable for safety reasons — see returns policy.
Go to My Orders, click "Return this item." Print the prepaid label, drop at any USPS or FedEx location.
5–7 business days after we receive the return. Crypto refunds are processed at the dollar value of the original purchase, not the current crypto price.
Opened vials, cold-chain products where the chain has been broken, gift cards, and any product marked "research use only — final sale" on the product page.
Contact us within 48 hours with photos. We replace damaged products at no charge.
Sign up here with email and password. Two-factor authentication is strongly recommended.
Reset it here. We'll email a link valid for 1 hour.
My Addresses. You can save multiple addresses and pick one at checkout.
My Subscriptions → click the subscription → "Pause" or "Cancel."
Account Settings → bottom of page → "Delete account." This is permanent and removes all order history; data retention follows our Privacy Policy.
Yes. Every batch of every product ships with a third-party COA showing identity (HPLC-MS), purity (HPLC-UV at 215 nm), and endotoxin level for injectables.
Every product page has a "View COA (PDF)" link. The COA is also included in your shipment.
"Research use only" products are sold for laboratory research. Other products are sold for general consumer use under our standard terms. See disclaimer.
Limited prescription products (e.g., FDA-approved tesamorelin) require a valid prescription from a licensed clinician. Upload at checkout.
Most lyophilized peptides: refrigerated at 2–8°C until reconstitution. Reconstituted peptides: refrigerated, used within 14–30 days depending on stability. See per-product page.
Because review fraud is endemic in this market and the only durable defense is to gate reviews to verified delivered orders. See Trust & Safety.
No. Vendors can reply publicly and flag for moderation, but only Peptide.best admin can act on a review, and only with a logged reason.
After your order is delivered, go to My Orders → click "Write a review" next to each product. Reviews must be filed within 365 days of delivery.
Immediate. Reviews are not pre-moderated — they go live as soon as you submit. Reviews can be removed post-publication only via our moderation queue.
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