Refund and Returns Policy

Last Updated: October 1st, 2026

Double Diamond Peptides LLC (“Double Diamond Peptides,” “DD,” “we,” “us,” or “our”) maintains this Refund and Returns Policy for purchases made through vantapep.com.

This policy should be read together with our Terms and Conditions and Research Use Policy.

1. All Sales Final

Due to the nature of the products offered by Double Diamond Peptides LLC, all sales are final, except where a refund, replacement, or other remedy is required by applicable law or expressly provided under this policy.

Customers are responsible for reviewing product selections, quantities, shipping information, and other order details carefully before completing a purchase.

2. Returns and Exchanges

Double Diamond Peptides LLC does not accept ordinary product returns or exchanges.

Products should not be shipped back to Double Diamond Peptides LLC unless return instructions have been expressly provided by us.

Unauthorized returns may not be accepted or processed.

Nothing in this policy limits rights or remedies that cannot lawfully be excluded.

3. Order Cancellations and Modifications

If you need to request a cancellation or modification, please contact us as promptly as possible after placing your order.

We may attempt to accommodate a request before processing or fulfillment begins, but cancellation or modification is not guaranteed.

Once an order has entered processing or fulfillment, it may not be possible to cancel or modify the order.

4. Damaged, Defective, or Incorrect Orders

If an order arrives damaged, defective, or materially different from the item ordered, please contact Double Diamond Peptides LLC promptly after delivery.

To allow us to review the issue, we may request information reasonably necessary to evaluate the claim, which may include:

  • Order number.
  • Description of the issue.
  • Photographs of the product and packaging.
  • Shipping or delivery information.
  • Other information reasonably necessary to investigate the matter.

Please retain the affected product and its packaging while the matter is being reviewed unless we instruct you otherwise.

5. Review and Resolution

Double Diamond Peptides LLC will review reported order issues based on the circumstances presented.

When appropriate, and subject to applicable law, a resolution may include:

  • Replacement of the affected product.
  • Refund of an applicable amount.
  • Store credit, if offered and accepted.
  • Another appropriate resolution.

The availability of a particular resolution may depend on the circumstances of the order and the nature of the issue.

6. Orders Declined or Canceled by Double Diamond Peptides LLC

Submitting an order does not constitute final acceptance by Double Diamond Peptides LLC.

We may decline, limit, or cancel an order as described in our Terms and Conditions and Research Use Policy.

If payment has already been collected for an order that Double Diamond Peptides LLC subsequently declines or cancels, the applicable amount will be refunded as appropriate.

7. Shipping and Delivery Issues

Customers are responsible for providing complete and accurate shipping information during checkout.

Shipping and delivery estimates are provided for convenience and are not guaranteed.

If a shipment appears lost or arrives damaged, please contact Double Diamond Peptides LLC promptly so the matter can be reviewed and, where appropriate, assistance with the carrier or another resolution can be provided.

Double Diamond Peptides LLC is not responsible for delays or delivery problems caused by incorrect or incomplete shipping information supplied by the purchaser, except to the extent otherwise required by applicable law.

8. Payment Disputes and Chargebacks

If you believe there is an error with an order or charge, please contact Double Diamond Peptides LLC through our Contact page so we have an opportunity to review the matter.

Nothing in this policy prevents a customer from exercising rights available through their payment provider or under applicable law.

Fraudulent, abusive, or materially false payment disputes may result in restriction of future transactions to the extent permitted by applicable law.

9. Applicable Law

This Refund and Returns Policy is subject to applicable law and should be read together with Double Diamond Peptides LLC’s Terms and Conditions.

Nothing in this policy excludes, restricts, or limits any right or remedy that cannot lawfully be excluded, restricted, or limited.

10. Contact Information

Questions or requests concerning an order, cancellation, damaged or incorrect shipment, refund, or other matter covered by this policy may be submitted through the Contact page on this website.