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1M+ Happy Healthy Customers

Fasting Shake

The only shake your body doesn’t think it’s drinking.

Overview and benefits
  • Extends your fasting, fat-burning state
  • Supplies nourishment without breaking your fast
  • Maintains ketones and blood glucose comparable to a water-only fast
  • Made with same science as the Prolon 5-Day
  • Delivers 21 essential vitamins and minerals
What's in the bag
  • 12 single-serve sachets per bag
  • Two flavors: Chocolate or Vanilla
  • Just add water—stir, shake, or blend one sachet into 8 fl oz
Nutrition facts
  • 210 calories per sachet · low glycemic index
  • Made with "longevity nuts:" almonds and macadamia nuts
  • Rich in healthy fats, fiber, vitamins, minerals, and omega-3 fatty acids
  • Plant-based protein and prebiotic fiber for lasting satiety
  • Dairy-free · soy-free · gluten-free · non-GMO · vegan
Shipping
  • Free shipping on every subscription order
  • Ships in 2 business days
Plant-Based Gluten-Free Non-GMO Dairy-Free
Clinically Studied Patented & peer-reviewed — backed by 25+ years of research
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Choose your flavors:
Vanilla
Vanilla
1
Chocolate
Chocolate
1
Choose your frequency:
Nutritional information and allergen warning

Allergen: Contains almond, coconut, and macadamia nuts.

View or download nutrition information
The shake you can drink while you’re fasting
Extends your fasting state

Formulated to stay below the body’s nutrient-sensing pathways, so you can maintain a fasting state while enjoying a satisfying snack or meal.

Supports fat-burning and ketone production

The Fasting Shake is as effective as water-only fasting in lowering glucose and increasing ketones.
Delivers clean and balanced nourishment

Provides plant-based proteins, healthy fats, prebiotic fiber, and 21 essential vitamins and minerals to keep your body nourished while preserving fasting physiology.
Clinically tested

Uses patented fasting nutrition technology developed through over 25 years of research by USC Longevity Institute and other leading universities.
Science-backed nutrition for modern fasting
The Fasting Shake is based on the same scientific principles behind our patented Fasting Mimicking Diet. Its precise nutrient composition is designed to stay below your body’s nutrient-sensing pathways while supplying plant-based protein and healthy fats to keep you nourished.The patented formulation is as effective as water-only fasting in reducing glucose levels and increasing ketone bodies—so you get the benefits of fasting without hunger.
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How to use
Drink a Fasting Shake during your intermittent fasting window to help extend fasting benefits, or as a nourishing, plant-based meal replacement.
Morning
Replace breakfast with a shake to stay in a fasting state without the negative impact of skipping your morning meal.
Snack or post-dinner
Use as a satisfying, low-sugar snack to curb cravings and maintain energy until your next meal.
On the go
Perfect for travel or busy days when you want to stay on track with your intermittent fasting or longevity lifestyle.
While traveling
Maintaining intermittent fasting while traveling can be challenging. Fasting Shake sachets are portable and easy to mix anytime, anywhere.

Over 1 million happy, healthy customers

Fasting Shake

Fasting Shake

$59.49

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FAQs

No. Fasting Shakes should be enjoyed outside your 5-Day Fasting Mimicking Diet. It’s designed for intermittent fasting days or as part of your everyday Longevity Lifestyle between FMD cycles.
The Fasting Shake’s unique blend of ingredients avoids triggering the body’s nutrient-sensing pathways (NSPs), allowing you to stay in physiological fasting while receiving nourishment.
The Fasting Shake contains a proprietary blend of plant-based proteins and healthy fats from nuts like macadamias, pecans, and almonds, plus 21 essential vitamins and minerals, prebiotic fiber, and natural cocoa or vanilla flavor.
Yes. The Fasting Shake is vegan, gluten-free, soy-free, dairy-free, and low-glycemic. It does have nuts, however, so those with nut allergies should not use it.
The Fasting Shake is designed for intermittent fasting and formulated with less protein to help maintain a fasting state by staying below nutrient-sensing pathways, while L-Protein Shake is intended for your feeding window, providing higher protein to support muscle health between fasts as part of your daily longevity routine.
Replace one meal or snack during your fasting window to extend fasting benefits, support energy, and stay satiated.
Yes. The Fasting Shake’s formulation was tested in preclinical trials at the USC Longevity Institute and clinical studies at hospitals and research centers. Results show it maintains fasting physiology, with no significant rise in postprandial glucose or drop in ketones.
Keep in a cool, dry place. Each bag contains 12 individual sachets for convenience.