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Fast Bar - Intermittent Fasting Bars

Product information

240.00 SR


4.7 out of 5 stars

Fast Bar makes intermittent fasting easy. It's the only nutrition bar you can eat during your fasting window without taking you out of fasting mode.

Over 20 years of research, scientists studied how unique blends of macronutrients and micronutrients could be consumed without kicking your body out of a fasting state. It is this formulation used to create Fast Bar.

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Every night when you go to sleep, your body goes into a fasting state. The human body was designed to fast but modern life intervened. Tap into your natural instincts with ProLon.

What Customers Are Saying

This is an excellent product.

This is an excellent product. The fast bars are very helpful in trying to lose weight by lowering the hunger feelings, especially after exercising at the gym. The fast bars also help you to skip a meal and feel satisfied until your next meal. My doctor recommended fast bars to me and I have been buying them since I found out about fast bars.


Excellent product! I recently ordered a large quantity of...

I recently ordered a large quantity of fastbars because I've ordered before and really like them. The ingredients are excellent quality, the taste is much better than similar items on the market, and the amount of calories is just right. I use them when I do a several day fasting mimicking fast as well as for snacks in general. Thanks for an excellent product.


I love these bars.

I love these bars . I use them every morning as I am doing an intermittent fasting. I do lunch & dinner so I have a fast bar in the morning to prolong my fast. They tasted delicious all of them but my favorite is nuts & honey.. I am planning to buy them until I reach my healthy weight.

mathilde Fletcher

Keep fasting!

I bought these with the intent of using them as a last resort when I'm about to cave before my 6 hour eating window opens. So far, so good! I've eaten them a few times to hold out that last hour or so.

Rebekah Bevill

I love these bars!

I love these bars! Will have a whole bar for breakfast or half a bar as a snack when biking or hiking. A go to when traveling. I like all 3 varieties but the original Nuts & Honey is my favorite.

Carol M.

Fast Bar’s proprietary formula of premium ingredients doesn’t trigger your body’s nutrient sensing system, so your body’s tricked into thinking it’s fasting. It's the only thing you can eat during your fasting window without breaking your fast — eat without your body even knowing

Clinical Trial Clinical Trial
*In a randomized, controlled study of 105 adults, participants fasted overnight for 15 hours, then had either breakfast, a Fast Bar, or water. Blood glucose and ketones were measured every hour for 4 hours with results shown above. Data on file.