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1M+ Happy Healthy Customers

Fasting Shake

A science-backed, plant-powered shake that stays under nutrient-sensing pathways to nourish your body while helping to keep you in a fasting, fat-burning state. 

  • Maintains fasting and fat-burning

  • Provides 21 essential vitamins and minerals

  • Plant-based proteins, healthy fats, and prebiotic fiber

  • Low glycemic, low sugar, gluten-free

  • Dairy-free, soy-free, and vegan

  • Keto friendly

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    Nutritional information and allergen warning

    Allergen: Contains almond, coconut, and macadamia nuts.

    View or download nutrition information

    ADD THE ESSENTIALS:
    1-Day Reset

    1-Day Reset

    A complete day of fasting nutrition

    $39.00
    L-Protein

    L-Protein

    25g of plant-powered, ultra-clean protein

    $45.00 $50.00
    Prolon 5-Day FMD

    Prolon 5-Day FMD

    Nourish Your Body & Fast For Longer

    $185.00 $215.00
    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.

    1,000,000+ 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

    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.