Plant-based protein - Clean Label, Gluten Free
Why & when to use Fast Bar
Fast 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 flavors do not raise your blood glucose levels and keep your ketones in a fasting state*!
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*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 Fast Bar group, breakfast group and water-fast group. Click here to read the published scientific article.
Pick Your Favorite
Nuts & Honey
New formulation - our original Fast Bar with an upgraded texture and taste - soft & delicious!
Chocolate Chip
New formulation - upgraded texture and taste - soft & delicious Chocolate Chip!
Coconut Macadamia
New formulation - upgraded texture and taste - soft & delicious Coconut Macadamia!
The only bar with a PhD
Clinically tested & developed to not break your fast*
20 + years of scientific research conducted at the world’s leading Universities
$36 Million in research & development
Based on Nobel Prize winning science
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*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 Fast Bar group, breakfast group and water-fast group. Click here to read the published scientific article.
The only bar with a PhD
Clinically tested & developed to not break your fast*
20 + years of scientific research conducted at the world’s leading Universities
$36 Million in research & development
Based on Nobel Prize winning science
Shop All
*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 Fast Bar group, breakfast group and water-fast group. Click here to read the published scientific article.
The only bar with a PhD
Clinically tested & developed to not break your fast*
20 + years of scientific research conducted at the world’s leading Universities$36 Million in research & developmentBased on Nobel Prize winning science
*Benefits seen in a randomized, controlled study in 105 adultsafter a 15-hour overnight fast comparing the glucose and ketone results every hour for 4 hours in the Fast Bar group, breakfast group and water-fast group. Click here to read the published scientific article.
YES - AMAZINGLY, WHEN YOU EAT FAST BAR, YOUR BODY THINKS IT’S STILL FASTING*
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 it.
View The Study 
*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. Click here to read the published scientific article.
Delicious + Healthy = Extraordinary
Fast Bar is made with premium nuts like Macadamias. Nuts contain a variety of health-supporting nutrients like antioxidants, vitamins, minerals, fiber and Omega-3 fatty acids.
Five fantastic flavors
Shout it from the rooftops
“Tastes great and keeps me going until it’s time to break my fast.”
- Michelle Yabko
“Delicious and very filling. I can have a bar at 8:30 AM and I am not hungry until noon, great job!”
- D.B.V
- D.B.V
“I love these bars. The texture is on point. They present as homemade and are delicious! You guys got it right! Worth every penny!”
- Dana Funicelli
- Dana Funicelli
“Bars are tasty and satisfying. I have a bar each morning and my hunger is abated until I begin eating at noon. They are exactly what I was looking for.”
- Anthony Tamel
Welcome to the Fasting with Food Revolution
IF is already the #1 diet because of the benefits, both inside and out, and how seamlessly it can fit into your daily life. But it’s our groundbreaking innovation - fasting with food - that’s truly changing the game. Yes, nourishing yourself with Fast Bar in your fasting window turns the traditional idea of fasting on its head.
Hack your fast and enjoy the benefits without starving.
Hack your fast and enjoy the benefits without starving.
Fastination
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