Immune System

We’re confident you’ll love your Onnit supplements. If the product doesn't perform for you, however, we’re not gonna play games with you. Order any of our entry size supplements, and if you don’t like it, you can keep it! Notify our team, telling us why it wasn't a fit for you, and we’ll get you a refund right there on the spot - no return necessary. We just ask that you try it out for at least two weeks to give it a fair shot.

Our Keep-It™ guarantee is valid for the first-time purchase of a formula, and redeemable up to three months (90 days) after the purchase date. Multiple bottles, foods, apparel and gear do not fall under this guarantee, however, they may be applicable for return. Fitness equipment, personal care products, knowledge purchases, digital products, and DVDs are not eligible for return or refund. For more information and a full list of products that qualify, visit our Keep-It™ page. Further details can be found on our Refund Policy support page.

Free shipping is offered on orders with a minimum subtotal of $150 less discounts. Free shipping is only available in the contiguous U.S. and excludes Fitness and Digital items.

For media inquiries please contact us at media@onnit.com.

In thanks to military and first responders, we're extending a 15% discount off MSRP for all products purchased at Onnit.com.

To qualify, simply verify your status during checkout on the payment step. We verify through ID.me, our trusted technology partner for secure digital identity verification.

After verification, your discount will auto-apply on that order and all future orders.

Please note that this discount cannot be combined with coupons.

If you have any questions or issues with the verification process, please don't hesitate to reach out to Customer Service.

* US Military members, please choose United States as your destination country, as this will ensure your package ships via USPS and that you are not given international shipping rates.

With a subscription, you'll get your favorite Onnit products whenever you want at 15% off MSRP. All automatic, worry free, and with our same great money back guarantee.

Cancel or adjust your order at any time, hassle free. Your payment method will only be charged right before your order ships. The discount applied every time is 15% off MSRP or the current sale discount, whichever is greater. For more information, see the complete Onnit Subscription Terms & Conditions and Frequently Asked Questions.