TOP DEAL
15% Off Sitewide
TOP DEAL
Buy 2 Boxes, Get 10% Off + Free Shipping
HOT DEAL
TOP DEAL
Up to 40% Off Bundles
Up to 20% Off Subscription Orders
25% Off Weight and Metabolic Wellness Program
Unlock Savings: 25% Off Initial Month
15% Off ProLon 5-Day Fasting Mimicking Program
20% Off ProLon Fasting Bar When You Subscribe
10% Off Two Box Bundle Fasting Bar
Free Shipping on All Subscription Orders
Shop Now for Free Shipping $200+
Buy Now, Pay Later With PayPal
15% Off ProLon 5-Day Fasting Mimicking Diet When You Subscribe + Free Welcome Kit
Take the Quiz
Two Free Fasting Bars on Orders Over $150
Top ProLon Coupons and Deals for September 2026
| Coupon | Discount Type | Last Used |
|---|---|---|
| 15% Off Sitewide | Coupon Code | Sep 28, 2026 |
| Up to 40% Off Bundles | Deal | Sep 28, 2026 |
| 25% Off Weight and Metabolic Wellness Program | Deal | Sep 28, 2026 |
| Unlock Savings: 25% Off Initial Month | Deal | Sep 27, 2026 |
| 15% Off ProLon 5-Day Fasting Mimicking Diet When You Subscribe + Free Welcome Kit | Deal | Sep 27, 2026 |
Recently Expired ProLon Coupons
Free Gifts on 2 FMD Orders
Free Longevity Diet Guide With Email Sign Up
Labor Day: Buy 3 One-Day Resets, Get $15 Off
Shop Healthy Aging With Science-backed Nutrition for $119
Build Your Longevity Routine & Get Free Gifts
Save Big on Fasting Kits With a Prolon Discount Code
Unlock your body’s true potential with science-backed, health-boosting nutritional aids at Prolon. Choose the best routine for your needs — whether you’re looking for a quick boost with a one-day fasting kit or going all in with a five-day program, Prolon has the nutritional supplements and fasting aids you need to improve your metabolic health, cellular rejuvenation, and weight loss. Enjoy year-round free shipping on select products, and save up to $30 on select plans when you place a subscription order.
How to Save at ProLon
Subscribe and Save
Prolon Subscribe and Save can help you save $30 on your 5-day plan. Choose from their monthly or quarterly plans to secure your discount.
Free Shipping Offers
Pick up a Prolon 5-Day Fast or other select supplements and plans to earn free shipping. Free shipping offers vary throughout the year, so make sure to check for the free shipping label on each product page before your purchase.
Newsletter Sign-up
Sign up for Prolon’s digital newsletter and receive a 10% discount straight to your inbox. You’ll also be the first to know about upcoming sales, promotions, and new product launches.
Best Holiday Sales at ProLon
- Mother's Day Sales: Show your mom how much you care about her health by taking advantage of Prolon's Mother's Day sales. Expect sitewide discounts of 20%.
- Father's Day Sales: This Father's Day, help your dad embark on a healthier lifestyle by snagging deals such as Prolon for only $165 per box.
- Labor Day Sales: As summer ends, take advantage of Prolon's Labor Day sales to grab discounts of up to 20% on select plans, and a free Longevity Spread with purchase.
- Black Friday Sales: Prolon's Black Friday sales are some of the best times to try out Prolon. Expect markdowns of up to 20% off storewide, plus free gifts and other exciting holiday perks.
- Cyber Monday Sales: Continue your Black Friday savings with Prolon's Cyber Monday sale. You’ll find freebies such as a free 10-count Fast Bar with any purchase over $100.
- Christmas Sales: Give the gift of health this Christmas with Prolon's Christmas sales. You'll find freebies such as a free L-Spread with any purchase over $100.
- New Year’s Sale: Start the New Year on the right foot with 15% off sitewide at Prolon.
How do I apply my Prolon promo code?
- Add your Prolon fasting kit or supplements to your Cart.
- Click on your Cart on the upper-right-hand side of your screen.
- Scroll down until you see your Order Summary.
- Under “Enter Your Discount Here," locate the empty box and enter your Prolon promo code.
- Click Apply, then finish checking out as normal.
ProLon — Frequently Asked Questions
How often do I use the Prolon 5-Day Fast?
Prolon recommends different frequencies of usage depending on your health goals. The company suggests that customers with health or metabolic objectives in mind should go through a 5-Day Fast every month for three to four months. For healthy aging, they recommend twice per year, while three times per year is Prolon’s recommendation for healthy aging and added weight loss.
What is Prolon's refund policy?
All sales at Prolon are final, except in the even of a product quality concern or unexpected medical adverse event related to the product. Contact Prolon customer service for a case-by-case review of your situation.
When is the best time to pick up a Prolon fasting kit?
Wait until Labor Day or Black Friday for the biggest savings on Prolon products. Past sales have featured discounts of as much as 20% on select items.
Does Prolon offer a subscription service?
Yes — place a subscription order at Prolon to receive 5-Day Plans, fasting kits, and other items on a recurring basis.
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Today's Top ProLon Discount Codes
Top
- 15% Off Sitewide
- Buy 2 Boxes, Get 10% Off + Free Shipping
| Total Offers | 15 |
| Coupon Codes | 1 |
| Best Discount | 15% Off |
| Free Shipping Deals | 3 |
| Average Savings | $92.63 |
