4.4
1M+ Happy Healthy Customers

1-Day Reset

The 1-Day Reset uses the same nutrition technology as the 5-Day Fasting Mimicking Diet. A patented, precise blend of plant-based nutrients provides essential nutrition without triggering the body’s nutrient sensing pathways, keeping your body in a fasting state.

  • Intermittent fasting, made easy

  • Gives your body a break

  • Supports fasting and fat-burning

  • Gluten-free, soy-free, dairy-free

  • Keto friendly

  • Backed by 25+ years of research

Choose your soup flavors:

Ready-to-eat, certified organic soups

Quick-mix soups

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HSA/FSA eligible

Programs like health savings accounts (HSA) and flexible spending accounts (FSA) enable individuals to allocate pre-tax money for qualified healthcare expenses. Prolon has partnered with Sika, allowing customers to use their HSA/FSA funds to purchase our science backed products.

Choose pay with Sika at checkout or learn more here.

ADD THE ESSENTIALS:
Prolon 5-Day FMD

Prolon 5-Day FMD

Five days to lasting wellness and renewal

$185.00 $215.00
L-Protein

L-Protein

25g of ultra-clean, plant-powered protein

$45.00 $50.00
Fasting Shake

Fasting Shake

Nourish Your Body & Fast For Longer

$69.99

The break—and benefits—your body needs
Keeps your body in a fasting state

Foods are scientifically formulated to stay below nutrient sensing pathways, keeping the body in a fasting state.
Supports healthy weight loss

Activates ketones, targets visceral fat loss, and supports healthy metabolic markers–in just 24 hours.
Resets your relationship with food

Gives your body the break it needs, gets you back on track, and reduces sugar cravings.
Provides post-fast energy

Provides clean, plant-based nutrition that may help with post-fast energy, clarity, and focus.
Makes intermittent fasting easier

A simple, science-backed way to support your intermittent fasting lifestyle.

The science behind your Reset
The Prolon 1-Day Reset Kit combines cutting-edge fasting science and plant-based nutrition to support healthy metabolic markers, post-fast energy, and an overall reset.

Ketone activation

Maintains a fasting state, supporting the body to burn fat as fuel.

Essential nourishment

A blend of healthy fats, plant-based ingredients, and essential nutrients allow you to stay nourished while fasting.

Scientific formulation

Foods are scientifically formulated to stay below nutrient sensing pathways, keeping the body in a fasting state.

Clinically-backed

Patented formula based on over 25 years of research with 18 world renowned universities.

What’s in the box
Soups

Foods are scientifically formulated to stay below nutrient sensing pathways, keeping the body in a fasting state.
Nut Bars

Activates ketones, targets visceral fat loss while protecting muscle, and supports healthy metabolic markers–in just 24 hours.
Snacks

Gives your body the break it needs, gets you back on track, and reduces sugar cravings.
Supplements

Provides clean, plant-based nutrition that may help with post-fast energy, clarity, and focus.
L-Drink

A simple, science-backed way to support your intermittent fasting lifestyle.
Herbal Teas

A simple, science-backed way to support your intermittent fasting lifestyle.

How to use

We recommend eating a Fasting Bar once a day, as part of a healthy, balanced eating routine. 
Weekly
Use once weekly to allow the body to reset by giving it a full fasting break.
When your routine needs a refresh
Use before or after periods of over-indulgence to get back on track, break cravings, and return to healthy habits
Between 5-Day cycles
Use as a one-day reboot between cycles of Prolon 5-Day FMD. 
As part of your fasting routine
The Reset is ideal for intermittent fasters. Use it on fasting days of 6:1 or 5:2 intermittent fasting methods.

2,000,000+ Happy Healthy Customers

Backed by science, loved by users
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“It works—weight management, energy, and mental clarity.”

- Zaree

Verified Reviewer
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"I lost 5 pounds my first round and felt amazing."

- Amy

Verified Reviewer

FAQs

The Reset is ideal for anyone wanting to give their body a 24 hour “breather,” rebalance after indulgence, kickstart a healthy habit, or practice intermittent fasting.
You can use the Prolon 1-Day Reset whenever your body needs a break—after travel, weekends of indulgence, or as part of a weekly rhythm. Many people incorporate it once a week or up to twice weekly as part of a 5:2 fasting routine (two fasting days, five regular eating days). It’s not recommended to use the Reset on consecutive days or more than twice weekly without consulting your healthcare provider.
Yes. The 1-Day Reset was designed to fit perfectly into a 5:2 approach, helping you fast two non-consecutive days per week with no guesswork
The 1-Day Reset can keep the body in a physiological fasting, fat-burning state while the 5-Day FMD is a prolonged fast that triggers autophagy.
No. The 1-Day Reset is intended as a standalone fasting day or part of a weekly fasting routine. It should not be added before or after a 5-Day FMD cycle.
The Prolon 1-Day Reset is built on the same patented fasting-mimicking technology as the 5-Day FMD. This nutri-technology is backed by over 25 years research and over 47 clinical trials.
Transition back to balanced, nourishing meals inspired by the Longevity Diet, plant-forward, rich in legumes and healthy fats, with moderate amounts of protein. You can also incorporate Fasting Bars or L-Protein on non-fasting days to stay consistent with your rhythm and maintain results.
The 1-Day Reset is 100% plant-based, dairy free, and suitable for vegetarians. However, some components, such as the nut-based L-Bar, contain a small amount of honey, which is a restriction for some vegans.
Exercise should be avoided, but light activity such as walking, yoga, or stretching is fine.
Yes. You may enjoy black coffee or tea as long as they are plain - do not add anything like sugar, cream, sweeteners, etc as they can kick the body out of its fasting state.
The Prolon 1-Day Reset is designed for generally healthy adults and is safe when used as directed. It is not recommended for anyone who is pregnant or nursing, under 18, or diagnosed with certain medical conditions. If you have any chronic condition or take prescription medications, especially those that affect blood sugar, consult your healthcare provider before starting any fasting or calorie-restricted program.