Return policy

This is the Costides return and replacement policy for Research Use Only 10-pack vial orders fulfilled from our US warehouse. It is written for buyers and for Google Merchant Center return-policy review. It does not describe product use, dosing, or clinical handling.

Overview

• Cash refunds: not offered.
• Buyer remorse / unused packs: final sale. We do not accept returns for change of mind after shipment.
• Lost in transit or damaged on arrival: within 14 days of delivery, Costides may approve a free reship of the same SKU or store credit for the paid merchandise amount.
• Return shipping for unwanted goods: not applicable — unused packs are not accepted back.
• Reship shipping: paid by Costides when a lost or damaged claim is approved.

What we do not refund

Costides does not issue cash refunds, partial refunds, or payment chargebacks as a standard remedy. Orders for Research Use Only materials are final sale once accepted for fulfillment, except for the lost-or-damaged remedies below.

We do not accept returns for:

• Change of mind or unused packs
• Ordering the wrong SKU after the order has shipped
• Delays caused by incomplete addresses or carrier handoff
• Issues reported after the 14-day claim window

Lost or damaged shipments

If a carrier marks a shipment delivered and you did not receive it, or if vials or outer packaging arrive broken, email orders@costides.us within 14 days of the delivery date shown on tracking.

Include:

• Order number
• Shipping address on the order
• Carrier tracking number
• Clear photos of damage and packaging when the claim is damage

If we approve the claim, we will either reship the same listed SKU to the original US address or issue store credit for the merchandise total paid (excluding promotional value already applied). Costides chooses the remedy based on stock and claim details.

Store credit

Store credit, when issued, applies to a future Costides.us order on the same customer email. It is not cash, is non-transferable, and does not cover third-party fees. Credit expiration, if any, will be stated in the claim email.

How to start a claim

1. Email orders@costides.us with the subject line “Claim — [order number]”.
2. Attach tracking and photos as listed above.
3. Wait for written approval before discarding packaging when a damage claim is open.

You can also reach the buyer desk from the Contact page. For transit timing on original shipments, see Shipping.

Scope

This policy covers US domestic warehouse orders placed on Costides.us. Materials remain Research Use Only and are not sold for human or veterinary use. Sale terms also appear on Terms.

Last updated 2026-09-01 · Public policy URL: https://costides.us/us/returns