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fatty15 Discounts & Promo Codes

48 offers · updated · save up to 30%

Edited by Danica P. · Reviewed by Ivan P. · offers last checked Nov 5, 2026

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Current fatty15 offers

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Get 30% off on All Plans Storewide

Checked Nov 4

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  • Checked in a real cart at fatty15: the store accepted the code and took the discount off.
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20% off your order

Last seen Nov 8 Checked Oct 20, 2026

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  • Checked in a real cart: Oct 20, 2026
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20% off your order

Last seen Nov 8 Checked Oct 20, 2026

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  • Checked in a real cart: Oct 20, 2026
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Get 20% off on Sitewide

Last seen Nov 8 Checked Nov 5, 2026

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  • Checked in a real cart: Nov 5, 2026
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15% off your order

Last seen Nov 8 Checked Oct 20, 2026

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  • Offer applies only to the 90-day starter kit subscription. Subscription can be updated or canceled anytime. Valid only for the 90-day starter kit subscription. Subscription updates or cancellations are always available.
  • Checked in a real cart: Oct 20, 2026
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15% off your order

Last seen Nov 8 Checked Oct 20, 2026

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  • Checked in a real cart: Oct 20, 2026
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15% off your order

Last seen Nov 8 Checked Oct 20, 2026

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15% off your order

Last seen Nov 3 Checked Oct 20, 2026

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15% off your order

Last seen Nov 3 Checked Oct 20, 2026

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15% off your order

Last seen Nov 3 Checked Oct 20, 2026

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15% off your order

Last seen Nov 3 Checked Oct 20, 2026

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15% off your order

Last seen Nov 3 Checked Oct 20, 2026

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  • Checked in a real cart: Oct 20, 2026
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15% off your order

Checked Oct 20

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  • Checked in a real cart at fatty15: the store accepted the code and took the discount off.
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Fatty15.com Has 20% off Available

Last seen Nov 8 Checked Nov 4, 2026

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  • Ends
  • Checked in a real cart: Nov 4, 2026
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20% off with Code Code

Last seen Nov 8 Checked Nov 5, 2026

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  • Checked in a real cart: Nov 5, 2026
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9% off your order

Last seen Nov 3 Checked Oct 20, 2026

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  • Checked in a real cart: Oct 20, 2026
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15% off your order

Last seen Nov 8 Checked Oct 20, 2026

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  • Offer applies only to the 90-day starter kit subscription. Free shipping available for US Orders. Subscription can be updated or canceled anytime. Valid for the 90-day Starter Kit subscription only. Discount applies to qualifying orders over $101.96. Not combinable with other promotional codes.
  • Minimum order: $101.96
  • Checked in a real cart: Oct 20, 2026
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Save 20% Sitewide - Quality Savings on Everything

Last seen Nov 8

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15% off on 90-Day Starter Kits

Last seen Nov 8

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Make the Most of Your Shopping Experience at fatty15.com

Last seen Nov 8

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Sales and Extra Savings on Favorite Products at fatty15.com

Last seen Nov 3

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20% Off Your Purchase

Last seen Nov 8

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$20 off Fatty15 Starter Kit 90-day Supply

Last seen Nov 8

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Free shipping

Free shipping on every US order

Seen on fatty15's site · Nov 8

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  • Source: fatty15's about page
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Refer a Friend: Give 20% Off, Get $10

Last seen Nov 8

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  • Your friend receives 20% Off their first subscription purchase. You receive a $10 credit on your next refill after their purchase.
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20% Off 90-Day Starter Kit Subscription

Last seen Nov 8

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  • Offer applies to the subscription plan for the 90-day starter kit. Discount applies only to the automatic delivery plan for the initial 90-day supply. This savings cannot be used with other Fatty15 promotions or coupons.
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15% Off for Military Members

Last seen Nov 8

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  • Cannot be combined with other special deals.
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Newsletter Sign up Offer: 15% Discount

Last seen Nov 8

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$140 Off Annual Supply Kit

Last seen Nov 8

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  • Valid for a single use. Discount is based on comparison to four separate 90-day one-time purchases. Discount applies to annual supply kit compared to four separate 90-day purchases. Savings calculated based on standard one-time purchase pricing.
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Subscribe to Fatty15 and get special offers, free giveaways, and once-in-a-lifetime deals!

Last seen Nov 8

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Recently expired fatty15 offers (5)
  • Save 30% on Adult 40% on Kids Gummies. Ended Nov 8, 2026.
  • Test, compare, and optimize every ad in seconds, so you launch with confidence instead of Fatty15. Ended Nov 8, 2026.
  • Join now to receive the lastest news and updates + exclusive discounts from Fatty15. Ended Nov 8, 2026.
  • 15% off - Save More on Your Order (ALYSSAINM). Ended Nov 8, 2026.
  • Your Shopping Today Gets 15% off (HEALTHY). Ended Nov 8, 2026.

fatty15 at a glance

Cart tests
18 codes checked last 30 days, 100% worked How we count
Free shipping
On all orders
Returns
30 days
Subscribe & save
Yes
Ships internationally
Yes
Gift cards
Yes

About fatty15

fatty15 sells pentadecanoic acid supplements as capsules, adult gummies and sugar-free gummies for kids, alongside a book and branded merchandise.

Pricing runs mostly through subscriptions that renew every 30 or 90 days, and the money-back guarantee covers only a first Trial Kit or Starter Kit, so the opening order is where a discount and the safety net overlap.

fatty15 was co-founded by Stephanie Venn-Watson, a veterinary epidemiologist, and Eric Venn-Watson, a physician and US Navy veteran, who now serve as co-CEOs. The company traces its origin to work with aging Navy dolphins, in which, it says, higher levels of the fatty acid C15:0 went with healthier aging; the brand also calls the nutrient FA15.

Alongside its consumer products, fatty15 offers an extra-strength Advanced Formula that patients can get only via approved practitioners or Fullscript. Its book is titled The Longevity Nutrient, subscribers belong to the Science & Sunshine Club, and the home page marks the products as HSA/FSA eligible.

When shoppers look for fatty15 coupons

fatty15 coupon searches peak in September, about 2× a typical month, and dip lowest in March.

US Google searches, Sep 2025 to Aug 2026. Search interest, not sales.

Does fatty15 offer free shipping?

Yes. Every order within the United States ships free; orders to Canada are covered by the policy, with duties and taxes paid by the buyer. (read Sep 29, 2026)

What payment methods does fatty15 accept?

Visa, Mastercard, American Express, Discover, PayPal, Apple Pay and Google Pay are accepted, and the products are marked HSA/FSA eligible.

More about shopping at fatty15

Guarantee
A first purchase of capsules or gummies on fatty15.com has a 30-day money-back guarantee; 6-month and annual kits and refills are excluded.
Renewals
Subscriptions renew every 30 or 90 days until cancelled in the delivery schedule, at least 14 days before the period closes.
Subscribe price
The 90-day Starter Kit is $119.95 with a subscription and $149.95 bought on its own. (read Sep 29, 2026)
Referrals
A referred friend gets 20% off a 90-day subscription, and the referrer earns $10 off the next 90-day refill once that friend subscribes.
Gift cards
Emailed digital cards cover a 30-day Trial Kit or 90-day Starter Kit, priced at $49.95, $119.95 or $149.95.

From fatty15's own pages, read Nov 8, 2026.

Sources: About fatty15, fatty15 payment options page, fatty15 returns policy, fatty15 store policies, fatty15 refer page, fatty15 gift card page

How to use a fatty15 discount code

  1. fatty15's checkout takes a discount code or gift card in the section on the right side of the page, confirmed with the apply button.
  2. Referral credits behave differently from one-off codes: several can be applied together to the next 90-day refill, and since they never expire, a subscriber can bank them for a later order.
  3. No rule on combining other codes is published.
  4. The order should be placed on fatty15.com itself, because third-party sellers handle their own refunds and fall outside the money-back guarantee.
  5. International credit and debit cards are not accepted, which matters for buyers in Canada.
Where to enter a fatty15 code at Shopify checkout (illustration)
Where the code box sits on Shopify's standard checkout (illustration; screens vary).

If your fatty15 code doesn't work

  • Minimum order: "15% off your order" needs an order of at least $101.96.
  • Combining offers: Several referral discounts can be applied together to the next 90-day refill.
  • End date: "Fatty15.com Has 20% off Available" ends Nov 24, 2026; "20% off with Code Code" ends Nov 16, 2026.
  • Where to enter it: At checkout, enter the discount code or gift card in the section on the right side and click apply.

More reasons a code fails, and what to try: why promo codes don't work.

More ways to save at fatty15

  • The gap between subscribing and buying once is the largest visible saving: the 90-day Starter Kit drops from $149.95 to $119.95 on a subscription.
  • Each friend who subscribes through a referral adds $10 off the next 90-day refill, and those credits stack and stay valid indefinitely.
  • Because the home page marks the capsules and gummies as HSA/FSA eligible, health account funds may cover the purchase.
  • Anyone planning to stop should cancel at least 14 days before the period ends, or another shipment is billed.

fatty15 questions, answered

Where can a 20% off fatty15 code be found?

The 20% figure belongs to the referral program: a friend referred by a current subscriber gets 20% off a 90-day subscription.

Does fatty15 charge for shipping?

Shipping is free on every order within the United States, according to the brand's own story page.

Is fatty15 cheaper on a subscription?

A 90-day Starter Kit is priced at $119.95 with a subscription and $149.95 as a one-time purchase.

Can fatty15 be paid for with HSA or FSA funds?

The home page marks fatty15's products as HSA/FSA eligible.

Can a fatty15 order be refunded?

Refunds cover only a first-time Trial Kit or Starter Kit within 30 days of the first purchase. 6-month and annual kits and renewal orders are not refundable.

Does fatty15 ship to Canada?

The shipping policy covers Canada, with customs duties and taxes left to the customer. International credit and debit cards are not accepted.

30% off Get 30% off on All Plans Storewide
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