We are dedicated to making sure your experience ordering from Cerenx.com is always great.

All orders received before 3pm EST Mon-Fri will be shipped the same day. Orders received on Saturdays and Sundays, or after 3pm Weekdays, will be shipped the following business day. Please allow 5-7 days for delivery.

US Customers: A standard shipping charge of $4.95 applies to all orders under $100.00. Orders over $100.00 receive free shipping.

Standard shipping is USPS. Other carriers/shipping methods may be available. Contact our customer service representatives at 800-971-3721 or customerservice@diemlabs.com for details.

Canadian Customers: Limit 3 bottles per order. Orders above 3 bottles may be rejected at Customs.

A standard shipping charge of $19.95 applies to all Canadian orders.

Standard shipping is USPS. Other carriers/shipping methods may be available. Contact our customer service representatives at 800-971-3721 or customerservice@diemlabs.com for details.

How can I get free shipping? Free shipping is automatic on all orders over $100.00 for customers in the Continental US. Diem Labs may extend promotional free shipping offers from time to time; such offers are subject to the terms of the promotion. Free shipping offers are valid for customers in the Continental US only. Standard shipping method only. Please allow 5-7 days for delivery.

Why is there a 3-bottle limit for Canadian orders? Due to Customs regulations, orders above three bottles may be rejected. Know the laws that apply to your international mail orders. Visit canadapost.ca for more information.

Can you ship overnight or 2nd-Day? Yes, we can accommodate your special requests for express shipping. Actual shipping rates will apply. Call us at 800-971-3721 or email us at customerservice@diemlabs.com for details.

Your satisfaction is our first priority. Our products are designed to be safe and effective, and we guarantee that your order will arrive in good condition. If for any reason you are not satisfied with your order, you may return the product for a full refund of the purchase price (minus shipping) within 60 days of receipt. This refund is limited to one order per household. Call our customer service hotline at 800-971-3721 or email customerservice@diemlabs.com and we will process your refund – no questions asked.