ProLon® Fasting Bar – Box of 10

ProLon® Fasting Bar has been clinically tested, is loaded with flavour and packed with healthy nutrients to satisfy food cravings. Have an Intermittent Fasting Bar in the morning to help or extend your overnight fast* or anytime during the day to help curb your hunger.


In every box, you will find 10 ProLon® Fasting Bars. Use a bar anytime you want to extend your overnight fast and not break your fasting window.

Order before 16:00 on a working day and receive your ProLon order the next working day if you live in the Netherlands. Orders for Belgium and Luxembourg usually take one (sometimes two) days longer.

Free shipping above €50,-. If your order is under €50, we charge a fixed fee of €7,25 shipping costs per order, regardless of where you live.

*Benefits seen in a randomized, controlled study in 105 adults after a 15-hour overnight fast comparing the glucose and ketone results every hour for 4 hours in the Intermittent Fasting Bar group, breakfast group and water-fast group. Data on file.

Enhance your fasting with the unique and premium formulation of the ProLon® Fasting Bar

Why ProLon fasting bar?

Fast on your own terms. You can eat a Fasting Bar and extend your fasting window! Who wouldn’t want to actually eat something as opposed to just drinking water?

Intermittent Fasting Bar was scientifically formulated with these ingredients so that it doesn’t trigger the food sensing system, unlike your usual meals. We call this the fasting mimicking effect and it means that when you eat it during your fasting window, it curbs your hunger without breaking your fast, so you can fast for longer*!

How to enjoy a Fast Bar® and experience the health benefits that come with it

Why and when to use a Fasting Bar

  • Fasting Bar is ideal for those who skip breakfast, practice intermittent fasting, or follow a paleo, keto or fasting diet;
  • Give your body heart-healthy nuts;
  • Enjoy one as a snack anytime during the day to fuel your body when on the go;
  • Fasting bars can be purchased in boxes of 10.

Fasting Bar’s recipe is designed to nourish your body while maintaining its fasting state. For that reason, it’s best enjoyed during either your morning intermittent fasting window or as a late-night snack to satiate you before bed.

Similar to water, our delicious flavours do not raise your blood glucose levels and keep your ketones in a fasting state!