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ProLon is based on over 20 years of scientific research and $34 million in R&D.

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Fast Bar® for Providers

$28.00 $19.50 Save $8.50

NEW - ProLon Fasting Shake

The latest breakthrough in the science of nutrition and healthy aging. Help your body perform at its best and age slower!

NEW - Gen3 Soups

We're excited to bring you Gen3 Soups. Inspired and taste-tested by actual ProLon users, our new soups are bold in taste and sure to please.

New - Fast Bar Flavors

New Fast Bar flavors, Coconut Macadamia and Chocolate Chip! Available in quantities of 12.

Latest Reviews

This was my first 5 day. I was amazed about how I was rarely hungry and how much energy I had. Highly recommend!!
Michele K.

The best fasting product out there.
Very healthy, I felt renewed and ready to continue my journey to a healthier me.
Monica Monroy & Jonathan Garcia

Great diet. Second time. Got easier. And the results are amazing - lost 4kg (9-10 lbs) in 5 days and I feel great.*

Elad Shoushan<br><small>*Results not typical. On average, weight is loss is 5 pounds in 5 days</small>

Healthy Start Commitment

Do not use ProLon if:

You are allergic to nuts, oats, sesame, celery/celeriac, or other ingredients in the product.

ProLon is low in calories to support fasting. Ensure you are aware of the common side effects of fasting before starting a fast (see Is Fasting Health and Safe in our FAQs).

Not everyone should fast for prolonged periods of time. If you fit any of the following categories, you should fast only under the direct supervision or under the advice of a personal healthcare provider:

If you have any pre-existing conditions or are taking any prescription medications.
If you may have an infection or may be at risk for a repetitive infection; are underweight, pregnant, breastfeeding; or have a known, diagnosed or suspected eating disorder.
If you have any dietary restrictions, or are under 18 or over 70.

If you are a patient enrolling in the ProLon Professional Program only available through a healthcare provider, by using the QR code or purchasing from this website using your healthcare provider’s code or information, you are identifying as a patient. As part of the program, you agree to participate in coaching; receipt of educational materials through coaching, text messages, and/or email; and provision of a report back to your healthcare provider regarding your participation.

By clicking on the box, you agree that you have read and can adhere to this Healthy Start Commitment.

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