Start ProLon
for $46.75
+ Free 24ct. Fast Bar & Signature Bottle
installments in partnership with
with 4 interest-free payments of $46.75
With Shop Pay Installments, you split your purchases into four equal,
interest-free payments — with no additional, hidden, or late fees, and no
impact to your credit score.

Quick Approval

Get a real-time decision with
no interest, no fees, and no
impact to your credit score.

Easy Payments

Split your purchase
into 4 easy payments

No Hidden Fees

0% interest payments


For a limited time, enjoy a complimentary
gift with your purchase of a 5-Day ProLon
Fasting Nutrition Program.

installments in partnership with
with 4 interest-free payments of $46.75

Paying with Shop Pay is as easy as 1, 2, 3!

Finally, you don’t have to pay for your fast all at once. Happy days! Shop Pay makes it easy to find a payment plan that suits you so you can focus on getting your fast started.


Add items to your cart


Check out with Shop Pay


Pay in 4 easy installments

Your first payment will be due at checkout.

The next 3 remaining installments will be automatically charged every 2 weeks to your card saved on Shop Pay.
And don't worry, you'll get an email reminder before each payment to keep you in the know.

Frequently Asked Questions

Shop Pay helps you check out faster when you’re shopping in participating stores by automatically filling in your saved payment and shipping information when you enter your email address at checkout.

When you check out with Shop Pay, you have the option to pay in installments. Installments are a flexible payment option that can help you invest in larger purchases up to $1000 by dividing your purchase amount into four equal, biweekly, and interest-free payments. There are no additional fees.

Your first payment is due at checkout or up to 2 weeks after your purchase for approved customers. The next 3 remaining installments are automatically charged to your card saved on Shop Pay every 2 weeks.

Login to your shop pay account and contact them for further assistance. Prolon and L-Nutra do not manage your installment payments, they are provided by Shop Pay and underwritten by Affirm. You may also visit for additional information.

There are no additional charges, interest rates, or late fees.

Items in your order will be delivered normally, depending on the shipping service selected at checkout.

Shop Pay installments can be used for purchases between $50– $1,000.

Prolon’s Brand Purpose

To deliver many of the benefits of fasting with convenience and ease with a complete 5 day Fast, while empowering you to take control of your own health

ProLon® is a 5-day dietary program carefully designed to nourish and rejuvenate your body while supporting metabolic balance. The ProLon FastingMimicking Diet® gives many of the benefits of a fast while letting you eat delicious food to help fight hunger and lose weight while protecting lean body mass.* Get a trimmer waistline and many of the associated benefits of fasting without requiring ongoing lifestyle changes, such as long-term dieting.

*In a clinical study, ProLon was shown over three cycles (one per month for three months) to help individuals lose an average of 5.7 lbs and 1.6 inches off their waist circumference.

All ProLon purchases include a 20 minute health coach consultation — a $74 Value!

Perfect For First Time Faster

Single box order
$187 /box — or
4 interest-free payments of $46.75
Order ProLon as a trial and see what all the buzz is about. You’ll discover delicious foods that help keep you energized while giving your body many of the benefits of a 5-day fast. See how great you feel after doing just one cycle of ProLon!
Jumpstart your Metabolic Health and Healthy Aging with the Prolon 5-Day Meal Program
Add To Cart

Enhanced Fasting

Prolon Subscription
$175 /box — or
4 interest-free payments of $43.75

On-Going* Metabolic Health and Healthy Aging Maintenance Plans.

I want to receive ProLon:

*Plans can be cancelled anytime prior to shipping.
On-Going Healthy Aging Maintenance Plans
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Ultimate Fasting

3 Boxes of ProLon - Bundle & Save
$561 /box — or
4 interest-free payments of $140.25
Enjoy 5 days of Fasting Mimicking Diet for three consecutive months and enjoy all the benefits ProLon has to offer. Receive 3 boxes together - enjoy great savings & greater results
Reset With This Ultimate Fasting Plan for Metabolic Health and Healthy Aging
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