Onnit Coupon Codes

We regularly check the coupons and deals and update them when offer details change.

Checked October 2026

2,077 Coupon Reveals

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  • 15%

    OFF

    Code

    Verified Screenshot

    View proof

    15% Off Sitewide

    68+

    Code Reveals

  • 10%

    OFF

    Code

    Verified Screenshot

    View proof

    10% Off All Orders

    471+

    Code Reveals

  • UP TO

    50%

    OFF

    Promo

    Up to 50% Off Sale

    494+

    People Viewed this Deal

  • FREE

    SHIPPING

    Promo

    Free Shipping On Order Over $100

    59+

    People Viewed this Deal

  • 10%

    OFF

    Promo

    Sign Up & Get 10% Off Your Order

    465+

    People Viewed this Deal

  • $24

    Promo

    Best Seller Starting From $23.29

    57+

    People Viewed this Deal

  • $25

    Promo

    New Arrival Starting From $24.99

    463+

    People Viewed this Deal

Frequently Asked Questions

What makes the Keep-It guarantee different from a normal return policy?

For first-time purchases of select core supplements, Keep-It gives you 90 days to try the product, and if it's not working for you, you can keep what you have and still receive a refund of the product cost, without needing to ship anything back.
 

What's the standard return policy for everything else?

Items purchased directly from Onnit can generally be returned within 30 days if unopened with the safety seal intact, and other products carry a 90-day return window, though bundles must be returned in full and fitness equipment is final sale.
 

Is there a minimum order for free shipping?

Yes, free standard shipping applies to orders over $100 within the contiguous US, excluding fitness equipment and digital items, so filling a cart with supplements and functional foods is the more reliable way to clear that threshold.
 

Can I use a promo code alongside an automatic discount?

Not always. If a discount auto-applies at checkout, entering a manual code can create a conflict where only one takes effect, so it's worth comparing the automatic discount against your code to see which produces the better total.
 

How does Autoship & Save work?

Enrolling in recurring deliveries gets you a guaranteed 15 percent off, which can be combined with the free shipping threshold and, in some cases, other applicable offers like the military discount, making it the most reliable ongoing savings method for products you reorder regularly.
 

Is there a discount for military members and teachers?

Yes, the Community Discount offers 15 percent off sitewide plus a free fitness program for verified military, law enforcement, first responders, medical professionals, and teachers, verified at checkout and not combinable with other promos.
 

Can I use HSA or FSA funds?

Yes, Onnit partners with Truemed to determine HSA and FSA eligibility for products that meet a qualifying medical need, letting eligible shoppers combine that tax-advantaged purchasing with other applicable offers.

Saving Guide

Try a single-serving supplement using Keep-It before committing to a full bundle:

Since first-time purchases of select core supplements let you keep the product and still get refunded if unsatisfied, testing something new this way removes the financial risk that usually comes with trying an unfamiliar supplement.

Enroll in Autoship & Save for anything you'll reorder:

The guaranteed 15 percent off recurring orders, combined with free shipping, generally outperforms a one-time promo code for products you already know work for you.

Check Truemed eligibility if you have HSA or FSA funds:

Since certain Onnit products qualify as a medical expense through that integration, paying with pre-tax health dollars is effectively a discount stacked on top of whatever other offer you're using.

Compare an automatic discount against your promo code before entering one:

Because manually entering a code can override an already-applied automatic discount, checking your cart total under each scenario tells you which route actually saves more.

Confirm military or teacher eligibility before checkout:

At 15 percent off sitewide plus a free fitness program, the Community Discount is a meaningful standing benefit for those who qualify, and it's worth comparing directly against Autoship & Save if you're deciding between the two.

Checklist before you check out:

Consider Keep-It for any first-time supplement purchase, check your order clears $100 for free shipping, compare Autoship & Save against a one-time code, and confirm eligibility for the Community Discount or Truemed if applicable.

How We Verify Coupons

Tested Before Publishing

We manually test codes at checkout to confirm the advertised discount applies.

Clear Offer Conditions

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Updated Daily

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