Best Seller ReSet 1 Day Fasting Kit
ReSet 1 Day Fasting KitProlon ReSet 1 Day Fasting Kit with scientifically designed nutrition for fasting state managementReSet 1 Day Fasting Kit ReSet 1 Day Fasting Kit ReSet 1 Day Fasting Kit ReSet 1 Day Fasting Kit Variety 2 with vegetable and black bean soup mix for fasting nutritionReSet 1 Day Fasting Kit by Prolon with tomato and butternut squash soup mix for fasting nutritionReSet 1 Day Fasting Kit with tea, soup, crackers, and olives for physiological fasting state

SKU PR037  ·  Fasting Mimicking Diet

ReSet 1 Day Fasting Kit

Prolon Reset provides a complete day of innovative nutrition formula that was scientifically tested and patented to feed your body while keeping it in a physiological fasting state. This Nutrition Program is similar to water fast.

Nutritional Fact Information
Original £39.00
Variety 2 £39.00
Variety 3 £39.00
Variety 4 £39.00
Variety 5 £39.00
Next Gen Variedad 1 £44.99
Next Gen Variedad 2 £44.99

Select one or more variants

Ships from Lonso Milan facility · 72h after order confirmation · free cold-chain shipping on orders over €1,500.

Same FMD biology

Patented macro shape — one day is enough to trigger the metabolic switch in most patients.

Gentle onboarding

Low-risk entry point before committing to a 5-day cycle. Builds patient confidence and adherence.

Monthly maintenance

One ReSet day per month between 5- day cycles holds biomarker gains and reinforces the habit.

How it fits the protocol

Three roles. One single-day kit.

01

Onboarding

Prescribe one ReSet day 2–4 weeks before the first 5-day cycle. Lets the patient experience the macro shape with low commitment. Doubles 5-day completion rates in our adherence data.

02

Monthly maintenance

Between 5-day cycles, one ReSet day per month maintains biomarker gains and reinforces the habit. The single-day cadence works for patients who can't commit to monthly 5-day cycles.

03

Sample of the system

ReSet is the lowest-friction way to introduce hesitant patients to FMD biology. Especially useful for clinic events, wellness days, or any out-reach moment.

What's in the box

One day. Four meal moments.
No decisions.

ReSet ships as a single-day box with everything labelled by meal moment. Patients open one box, follow the four pieces, and finish the day with the metabolic switch engaged.

01

PER 2 CAPS

1

L-Bar — Nut & Cocoa

Plant-protein based

The same NextGen bar from the 5-day kit. Sets the macro tone for the day: low protein, low carb, healthy fats from almonds. Includes a small portion of L- Crackers as a savoury accompaniment.

Breakfast
02

PER 2 CAPS

1

L-Soup — Tomato or Minestrone

Calorie-controlled, plant-based

Vegetable-forward soup with a precisely calibrated calorie load. Provides satiety and warm comfort at the midday meal — the most adherence-sensitive moment of the day for most patients.

Midday
03

PER 2 CAPS

1+1

L-Soup + L-Olives

Mediterranean-fat pairing

Second soup of the day plus a small portion of cold-pressed Mediterranean olives. The fat from the olives extends satiety into the evening and supports continued ketone production overnight.

Evening
04

PER 2 CAPS

All-day

L-Drink + L-Tea

Hibiscus glycerol + spearmint

Hibiscus glycerol drink supports the ketone shift. Spearmint and lemon tea covers the rest of the day's hydration. Both are non-caloric and engineered to support the fasting state.

All-day

The 24-hour timeline

From breakfast toevening tea.
One full day.

The kit is paced across six meal moments. Patients don't measure or decide — they just follow the box order. By evening, ketones are detectable in most patients; by morning, the metabolic flexibility window is open.

Hour 0–6

Glycogen begins to drop. Patient is still in glucose mode.

Hour 6–12

Insulin baseline shifts. First whispers of ketone production.

Hour 12–18

Ketones rise to 0.5–1.0 mmol/L. The metabolic switch is engaged.

Hour 18–24

Sustained ketosis through the evening and overnight.

Biological Age Score · Nature Aging, 2024

Three cycles. 2.5 years younger, on the data.

In the Mishra et al. 2024 trial (n=144, RCT), patients completing three consecutive Prolon FMD cycles reduced their Levine PhenoAge by an average of 2.5 years versus controls.

Read the Trial →

3 yrs

Biological Age Δ

−1.30 pp

HBA1C (12 wk)

−7.4%

Trunk Fat

96%

1st-Cycle Completion

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.

Complete the Protocol

Other essentials.