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5 days Variety 4
Prolon’s 5 days Variety 4 delivers balanced nutrition for your fasting journey.
Free sample each month
Pause or cancel anytime
365 day free returns
Back in stock: 21/07/2025
Buy now, pay later from £47.25/mo
Key Benefits
-
Supports your daily nutrition with essential vitamins and minerals.
-
Helps reduce tiredness and fatigue with vitamin C, B6, B12, iron, and magnesium.
-
Contributes to normal energy-yielding metabolism and psychological function.
-
Helps maintain normal immune function with vitamins C, D, A, B6, B12, folate, zinc, copper, and selenium.
-
Experience a structured, expert-designed fasting-mimicking plan.
Start your five-day reset with Prolon’s 5 days Variety 4—thoughtfully crafted to provide a nourishing, plant-based approach to fasting. Each day brings a variety of soups, nut bars, snacks, supplements, and drinks, all designed to help you meet your daily nutritional needs while following a fasting-mimicking plan.
With a blend of vitamins and minerals including vitamin C, B6, B12, iron, magnesium, and zinc, this programme helps reduce tiredness and fatigue, supports normal energy-yielding metabolism, and contributes to the normal function of your immune system and mind.
Enjoy a carefully balanced selection of plant-based meals and snacks, from hearty soups to nut bars and olives, plus a daily supplement blend and herbal teas to keep you refreshed. The included L-Drink is designed to support you during your fast.
Completing the programme helps you maintain your energy, supports your wellbeing, and encourages a balanced approach to eating.
_What's inside the kit?
_Soups – Wholesome, plant-based soups made with a blend of natural ingredients for easy, nourishing meals. (Minestrone Soup, Green Pea & Chives Soup, Chickpea & Leeks Soup, Lentil Curry Soup, Red Pepper & Onion Soup, Tomato Soup, Carrot Ginger Soup)
Nut Bars – Cold-pressed nut bars with almonds, macadamia nuts, and pecans for a satisfying snack.
Snacks – Savoury bites including South Spanish olives and kale crackers.
Supplements – A blend of multivitamins, minerals, and omega-3s to support your daily nutrition.
L-Drink – A fruit-flavoured glycerol mix to help fuel you during fasting.
Herbal Teas – Caffeine-free herbal teas to keep you hydrated throughout your fast.__
ProLon’s revolutionary Fasting Mimicking Nutrition Technology delivers the transformative power of fasting without complete food deprivation. Developed through decades of research at the Longevity Institute of the University of Southern California, this precision nutrition formulation nourishes the body while keeping metabolic processes in fasting mode. Unlike traditional fasting, it provides essential nutrients while triggering cellular rejuvenation and metabolic reset. Backed by over 32 clinical trials at leading research institutions, including Stanford, Mayo Clinic, and the University of Miami, ProLon’s fasting programme supports longevity, enhances metabolic health, and promotes overall wellbeing.
ProLon is redefining the science of fasting with cutting-edge nutrition designed to support long-term health. Founded by Dr. Valter Longo, a world-renowned longevity expert and Director of the Longevity Institute at USC, the brand emerged from a mission to harness the power of fasting for disease prevention and cellular renewal. Through over 20 years of scientific research, ProLon continues to pioneer the field of longevity-focused nutrition, making fasting more accessible while advancing the concept of food as medicine.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Shipping
At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.
UK standard delivery
Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.
Next working day
For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.
International
International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.
Returns
If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.
For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.
5 days Variety 4
Prolon’s 5 days Variety 4 delivers balanced nutrition for your fasting journey.
Free sample each month
Pause or cancel anytime
365 day free returns
Back in stock: 21/07/2025
Buy now, pay later from £47.25/mo
Key Benefits
-
Supports your daily nutrition with essential vitamins and minerals.
-
Helps reduce tiredness and fatigue with vitamin C, B6, B12, iron, and magnesium.
-
Contributes to normal energy-yielding metabolism and psychological function.
-
Helps maintain normal immune function with vitamins C, D, A, B6, B12, folate, zinc, copper, and selenium.
-
Experience a structured, expert-designed fasting-mimicking plan.
Start your five-day reset with Prolon’s 5 days Variety 4—thoughtfully crafted to provide a nourishing, plant-based approach to fasting. Each day brings a variety of soups, nut bars, snacks, supplements, and drinks, all designed to help you meet your daily nutritional needs while following a fasting-mimicking plan.
With a blend of vitamins and minerals including vitamin C, B6, B12, iron, magnesium, and zinc, this programme helps reduce tiredness and fatigue, supports normal energy-yielding metabolism, and contributes to the normal function of your immune system and mind.
Enjoy a carefully balanced selection of plant-based meals and snacks, from hearty soups to nut bars and olives, plus a daily supplement blend and herbal teas to keep you refreshed. The included L-Drink is designed to support you during your fast.
Completing the programme helps you maintain your energy, supports your wellbeing, and encourages a balanced approach to eating.
_What's inside the kit?
_Soups – Wholesome, plant-based soups made with a blend of natural ingredients for easy, nourishing meals. (Minestrone Soup, Green Pea & Chives Soup, Chickpea & Leeks Soup, Lentil Curry Soup, Red Pepper & Onion Soup, Tomato Soup, Carrot Ginger Soup)
Nut Bars – Cold-pressed nut bars with almonds, macadamia nuts, and pecans for a satisfying snack.
Snacks – Savoury bites including South Spanish olives and kale crackers.
Supplements – A blend of multivitamins, minerals, and omega-3s to support your daily nutrition.
L-Drink – A fruit-flavoured glycerol mix to help fuel you during fasting.
Herbal Teas – Caffeine-free herbal teas to keep you hydrated throughout your fast.__
ProLon’s revolutionary Fasting Mimicking Nutrition Technology delivers the transformative power of fasting without complete food deprivation. Developed through decades of research at the Longevity Institute of the University of Southern California, this precision nutrition formulation nourishes the body while keeping metabolic processes in fasting mode. Unlike traditional fasting, it provides essential nutrients while triggering cellular rejuvenation and metabolic reset. Backed by over 32 clinical trials at leading research institutions, including Stanford, Mayo Clinic, and the University of Miami, ProLon’s fasting programme supports longevity, enhances metabolic health, and promotes overall wellbeing.
ProLon is redefining the science of fasting with cutting-edge nutrition designed to support long-term health. Founded by Dr. Valter Longo, a world-renowned longevity expert and Director of the Longevity Institute at USC, the brand emerged from a mission to harness the power of fasting for disease prevention and cellular renewal. Through over 20 years of scientific research, ProLon continues to pioneer the field of longevity-focused nutrition, making fasting more accessible while advancing the concept of food as medicine.
With our Healf Curation Process, we do the work for you. Shop with confidence knowing that every item has been tried, tested, and curated for you.
Learn more about each step—Brand Discovery, Expert Validation, and Community Testing—here.
Shipping
At Healf, we prioritize safe and fast delivery for all our customers. Our carefully selected couriers are Royal Mail and DPD.
UK standard delivery
Enjoy free standard delivery on orders above £50, this option usually requires 2-3 working days. If your order is under £50, this delivery option is available for £3.99.
Next working day
For when you need our products urgently, we offer next working day shipping for £5.99. For orders placed before 12.00, we will ship it the same day to ensure you receive your order the next working day.
International
International deliveries can take 7 working days, and up to 4 weeks. The cost is £22.99 for orders below £50, £49.95 for orders above.
Returns
If for any reason you are not satisfied with your order, we provide free 365-day UK returns for all our customers. To initiate your return, simply contact us at team@healf.com, and we'll send you a return slip and help arrange a collection. The item you return must be sent in the same condition as received and inside the original packaging. Once received, we will notify you via email.
For international returns, we unfortunately do not cover the cost. However, we work with an array of carriers and can offer self-posting returns for customers shopping from outside the UK.
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Questions?
Every product undergoes our Healf Curation Process. With it, you can shop confidently knowing that every item has been tried and tested before it reaches you. Our Healf Curation Process includes three key steps: Brand Discovery, Expert Validation, and Community Testing. Through these, we assess quality, ingredients, effectiveness, and more, ensuring that every product empowers your wellbeing.
The Healf Journal offers detailed insights into different aspects of wellbeing, as well as guidance, research, recipes, and more to help you invest in your personal wellbeing journey. You can also subscribe to our weekly newsletters for the latest updates at Healf and in the wellbeing industry. Subscribe via the sign-up block at the bottom of this page.
We love people who check ingredients as carefully as we do, so you'll find detailed information about the ingredients used on every product page (where applicable). If you see something you'd like to flag with us or have additional questions, please don't hesitate to get in touch—we'd love to hear from you.
Healf Curation Process™
Every product undergoes our rigorous Healf Curation Process, ensuring you are always getting the best when it comes to your wellbeing.
The Discovery
Expert Validation
Community Testing
The Discovery
Expert Validation