Discover what the internet is saying about Fast Bar.

Yay or nay?
Upgraded Reviews scanned the web to find out what real users are saying about Fast Bar.
See the highlights below and decide for yourself!
Table of contents
- ✅ Pros
- ❌ Cons
- ⚖️ Summaries
- 💸 Top Discount
✅ Pros
“Fast Bar contains plant-based protein, more good fats and less carbs, which keeps us fuller longer.”

“The bars come individually wrapped and are a good size.”
“Prolon claims that similar to water, their bars do not raise your blood glucose levels, keep your ketones in a fasting state, and curb your appetite until your next meal.”
“ProLon and its parent company are respected by dieticians and nutritionists.”
“According to Prolon, it’s the first bar you can eat that won’t take you out of fasting mode.”
“They help suppress appetite.”
“These bars are delicious and scientifically formulated to keep your body in a fasting state.”
“They taste great.”
“It helps support a healthful lifestyle.”
“These are good source of iron, calcium, and potassium.”
“Prolon came about as a result of Dr. Valter Longo’s years of research for his longevity clinical study.”
“It is vegan-friendly.”
“These bars are a good source of fats and proteins.”
“Bars help fill the gap and satiate dieters who are struggling with IF.”
“These snacks help us maintain our intermittent fasting hours.”
“The bars are available in three yummy flavors: Fast Bar Nuts and Honey, Fast Bar Nuts & Cacao Chips and Fast Bar Nuts & Dark Cocoa.”
“Fast Bar is made with a scrumptious blend of macadamia nuts, pecans and almonds.”
“The nut-based Fast Bar is gluten-free, soy-free, dairy-free, low sugar, and Keto-friendly.”
“It is not a crash diet or an unsustainable diet.”
💸 Top Current Discount
❌ Cons
“These are not incredibly unique.”
“There are not many flavors on the menu.”
“These bars are not safe for those with nut allergies.”
“It is not suitable for those with a nut allergy or sensitivity. Fast Bar nuts include macadamia, pecan, and almond.”
“It is definitely more affordable than the five-day ProLon plan, but still not a “cheap” option.”
“They are somewhat expensive.”
⚖️ Final Say
Read the summaries of what reviewers think about Fast Bar below.

“Fast Bars have some great ingredients that are 100% natural and known to be healthy. We are less certain about the health effects of fasting, but at the very least Fast Bars make a healthy snack option that is a good replacement for that bag of chips or cookies.”
“Is the Fast Bar the only thing helping me to lose weight? Absolutely not but it’s a tool in my weight loss journey. Surprisingly, a Fast Bar holds me over for hours until my next meal, usually a light lunch or healthy snack. While I don’t follow an intermittent fasting window precisely, I try to keep to the 16:8 window and not eat my first real meal until around noon and end my eating by 7 or 7:30 pm.”
“If you need help reaching your IF goals, or you’re looking for an easy yet healthy meal replacement option, these bars are an excellent option. After all, if you feel full enough, you’re less likely to reach for the cookies and destroy your hard work — no shame though, we’ve all been there! Not only did these nut-packed bars keep us full and happy, but they tasted pretty great too. It’s a win-win in our opinion!”
“Want to lose weight in quarantine? Then give intermittent fasting with Fast Bar a try. Fast Bar can help you stay on track and help you with your quarantine weight gain journey. These bars are backed by science and keep your body in a fasted state. They will help keep you weight management goals on track. Fast Bar is available in boxes of 5, 10, 20, 30 in each flavor or a variety pack in boxes of 15 or 30.”