Prolonged shakes are terrific! I enjoy the berry flavor and add fresh berries often. My energy is sustained through the AM including days I go to 45 minute reformer Pilates class and/or the gym. I... Toon meer
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Lees wat reviewers zeggen
I have done this fast 4 times. The good side is I have lost 4-5 lbs each time, the bad side is it’s truly hell and not because you’re suffering from hunger, but because the taste is so intolerable.... Toon meer
Bedrijf heeft geantwoord
I've used this program several times and have had great success. It's also gotten easier with each fast. Thank you to the Prolon Team for helping me reach my goals in achieving better optimal health.... Toon meer
Bedrijf heeft geantwoord
I never thought I could do a 5 day, even modified fast, but the kit makes it extremely easy, and amazingly I did not feel deprived. The snacks are actually tasty, small, but savorable. I did the soups... Toon meer
Bedrijf heeft geantwoord
Bedrijfsgegevens
Geschreven door het bedrijf
Prolon is a science-driven nutrition brand focused on supporting healthy aging and longevity through evidence-based nutritional programs. Its flagship product, the Prolon 5-Day Diet, is a patented Fasting Mimicking Diet (FMD) developed from more than 25 years of research and 40+ published clinical studies conducted in collaboration with USC, Mayo Clinic, and Stanford, to help the body enter a fasting-like state while still providing carefully formulated nourishment that supports natural cellular renewal. The 5-Day Diet is a complete, pre-packaged nutrition program that includes portioned meals, snacks, and beverages for each day, making the experience simple to follow without calorie counting or meal planning. Clinical research published in peer-reviewed journals, including Nature Communications, found that participants completing three consecutive monthly cycles experienced an average 2.5-year reduction in biological age markers, while also supporting healthy metabolism, preserving lean muscle, and promoting fat loss. But the 5-Day Diet is only the beginning. The same decades of longevity research that gave rise to the FMD also informed Prolon's broader ecosystem of science-backed products designed for everyday life. This includes L-Biome, a precision probiotic formulated to support gut health and metabolic function; fast bars, developed to extend the fasting state between meals; nutrition shakes built around longevity-supporting protein ratios; and guided reset programs that combine multiple Prolon products into structured, longer-term health protocols. Every product in the Prolon line shares the same origin, rigorous peer-reviewed science, and the same goal: to give your body what it needs to function better for longer. Founded on the belief that nutrition should be grounded in rigorous scientific research rather than trends, Prolon develops all of its products using a research-first approach. Prolon is part of L-Nutra, a nutrition technology company dedicated to advancing evidence-based nutrition for healthy aging and longevity. Our mission is to make cutting-edge longevity science accessible to everyone because how you age is not simply something that happens to you. It is something you can actively shape.
Contactgegevens
Verenigde Staten
- prolonlife.com
4,1
Goed
10K reviews
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My Go-To for a Reset
I've done roughly 8 rounds over the past 6 years. It is the only fast I'll do. Easy to follow; but requires your commitment. Nut bars for breakfast, soups for lunch and dinner. Some snacks depending on the day. Sign up for the free coaching zoom calls on the week you plan to do the 5-day; they will walk you through preparing and the day you break the fast. Lots of helpful tips on the calls. If you are registered for that session, they will email you a link if you miss it live. There's 20 years of science behind it and it works. My RDN recommended I give it a try when I hit a plateau after losing the first 30 pounds. I still do this fast when I need a reset. Great customer service. Quick delivery. You can email them with questions. Lots of support. If you do any fast, do this one.
4 mei 2026
Antwoord van Prolonlife
Hi Paula,
Thank you so much for taking the time to share such a thoughtful and detailed review.
We’re truly glad to hear that Prolon has been a consistent part of your routine over the years and that you’ve found the program easy to follow, well-supported, and effective as a reset when you need it. It’s especially great to hear that the coaching calls, resources, and customer support have been helpful along the way.
We really appreciate your trust and long-term commitment, and we’re grateful to be part of your wellness journey.
If you ever have any questions or need support, don’t hesitate to reach out. We’re here for you.
Antwoord van Prolonlife
Hi Anthony,
Thank you so much for sharing this with us.
We’re really glad to hear you found the ordering process easy and the website informative that clarity and ease of use is something we work hard to provide.
We truly appreciate your feedback and your support. If you ever have any questions or need assistance, don’t hesitate to reach out. We’re here for you.
Antwoord van Prolonlife
Hi Lawrence,
Thank you so much for sharing this with us.
We’re really glad to hear the checkout process felt intuitive and easy, that smooth experience is exactly what we aim for from start to finish.
We truly appreciate your feedback and your support. If you ever need anything or have any questions, don’t hesitate to reach out. We’re here for you.
I’ll start by saying
I’ll start by saying, I’ve done the reset twice before this! And obviously liked it as was planning to do the third reset.
I ordered from Prolon.ca directly and paid full price, as I did before. Once box arrived, I was curious as the two different vitamins which were included in previous orders, were not there?!?
I contacted customer service and they said, in very long winded message, they no longer provide! Ok??
I requested a refund as I felt, I ordered kit and parts were missing. After 11 emails back and forth, they asked me to “prove” where on the website, I seen that vitamins were included! By this time their tone was borderline hostile. I however, did take a screenshot of vitamins being included! I asked for the forth time for a full refund! No response and now my emails won’t go through to them. Extremely disappointed as I did like the reset in the past
30 april 2026
Review zonder uitnodiging
Antwoord van Prolonlife
Hi Tina,
Thank you for taking the time to share your feedback, and we’re truly sorry to hear about your experience with your most recent order.
We understand how disappointing it must have been to notice a difference in the kit compared to your previous resets, especially when you were planning to continue your Prolon journey. We also want to clarify that certain product components have been updated in Canada due to regulatory and formulation changes, which may differ from earlier kits.
Our Customer Service team worked with you over multiple exchanges to review your concerns in detail. A member of our management team also followed up directly to ensure you received additional support and clarification. After reviewing your case, we were able to provide a full refund as a one-time exception, even though this is not our standard policy, in order to ensure a fair and supportive resolution.
We always aim to assist our customers as thoroughly and respectfully as possible, and we’re sorry if that did not come through clearly during your experience. We remain committed to transparency, support, and continuous improvement based on all feedback we receive.
If you would ever like to reconnect, we’re still here to help. You can feel free to contact us via Main Prolon Number +18889265370 or customerservice@l-nutra.com.
No More Cravings and Full Energy
I am so happy I just finished Prolon..It was so great. I have a high appetite and always hungry and with Prolon I wa never hungry, and felt so clear and energetic and this is my 6th day .Today on my 6th day I woke up , I was not hungry really, ate only 1 fasting bar, then went out, ran errands, walked 1 hour and came home, did cleaning and I was not a bit hungry, I felt so energetic and decided to eat some salad at 6 pm..This is a great freedom, I felt like I am so powerful not having those cravings..All I want is to keep this state..thank you
30 april 2026
Antwoord van Prolonlife
Hi Airsibel,
Thank you so much for sharing your experience with us. We’re truly happy to hear that your ProLon journey felt so positive and empowering, especially that sense of clarity, steady energy, and freedom from cravings.
It’s wonderful that you were able to stay active, feel energized throughout your Day 6, and reconnect with your body’s signals in such a meaningful way. That feeling of control and balance is exactly what many people hope to build on beyond the program.
We really appreciate your thoughtful feedback and are grateful to be part of your wellness journey.
If you ever need support or have questions as you continue, don’t hesitate to reach out. We’re here for you.
horrible you keep shipping things I…
horrible you keep shipping things I didn't order and it has an address that is no longer mine because I moved to Europe
30 april 2026
Antwoord van Prolonlife
Hi Luciana,
Thank you for reaching out, and we’re very sorry for the frustration this has caused.
We want to clarify that we were not previously informed of a move or a request to cancel the subscription. In cases like this, shipments may continue according to the active subscription on file. We also send a confirmation email a few days before each order is processed so any changes or cancellations can be made in time.
That said, we are happy that our team was able to resolve this for you and ensure the subscription has now been properly addressed.
We truly appreciate you bringing this to our attention, and we’re sorry for the inconvenience this has caused due to the change of address. If you need any further assistance or would like us to review anything else related to your account, please don’t hesitate to reach out to us at customerservice@l-nutra.com or call us at +1 (888) 926-5370. We’re here to help.
Bad website
Product good, I gave it 3 stars because the website sucks, pain to get on then once on, account setting does not give you the info you need same with subscriptions, sending me a subscription when it says I have non and not able to fix it or cancel it
30 april 2026
Antwoord van Prolonlife
Hi Stace,
Thank you for taking the time to share your feedback with us. We’re very glad to hear you find the product good, but we’re truly sorry to hear about the frustration you experienced with the website and account management experience.
We understand how upsetting it can be when subscription details are unclear or when it feels difficult to access or update your account settings. This is not the experience we want for our customers, and we sincerely appreciate you bringing these issues to our attention. Your feedback has been shared with our team as we continue working to improve both the website functionality and the overall user experience.
We also want to reassure you that if there is any active subscription on your account that you would like to review, modify, or cancel, our Customer Service team is here to help and can take care of this for you directly to ensure it is fully resolved.
You can reach us at: Main Prolon Number: +1 (888) 926-5370 or customerservice@l-nutra.com
We truly appreciate your support and patience, and we’re here to make sure your experience moving forward is as smooth as possible.
Please take me off the subscription
Please take me off the subscription. I didn’t approve this and will dispute it with my credit card company if you automatically send me another order. This is my second request.
30 april 2026
Antwoord van Prolonlife
Hi Carole,
Thank you for reaching out, and we’re very sorry for the frustration this has caused. We completely understand your concern.
We understand that it is easy to miss a subscription or overlook renewal details.
We want to confirm that your subscription has been handled and no further orders will be processed. Our team has also taken care of your request to ensure this is fully resolved.
We are happy to have been able to support you and provide the assistance you needed.
If you need any further assistance, please don’t hesitate to contact us at customerservice@l-nutra.com. We’re here to help.
Easy and tasty.
Everything was prepared. Easy to pack for lunch. The bars and olives could be eaten on the run.
21 april 2026
Antwoord van Prolonlife
Hi Judy,
We are happy to receive your feedback.
We’re really glad to hear you found everything well-prepared and easy to take with you, especially the convenience of the bars and olives for on-the-go moments. Making the program simple and practical to fit into daily life is exactly what we aim for.
We truly appreciate your feedback and your support. If you ever need anything or have questions, don’t hesitate to reach out—we’re here for you.
The customer service was great
The customer service was great! understood my dilemma and was able to assist me right away.
27 april 2026
Antwoord van Prolonlife
Hi Raysa,
Thank you so much for sharing this with us.
We’re really glad to hear our Customer Service team was able to understand your situation and help you right away, that’s exactly the experience we aim to provide.
We truly appreciate your feedback and your trust in us. If you ever need anything in the future, don’t hesitate to reach out. We’re here for you.
Great customer service…
Products are great but your customer service personnel is even better. Yessica was extremely helpful, responded to emails right away, was polite and knowledgeable. She went the extra mile!
29 april 2026
Review zonder uitnodiging
Antwoord van Prolonlife
Hi Ibis,
Thank you so much for sharing this wonderful feedback.
We’re truly glad to hear you’ve been enjoying the products, and even more so that your experience with our Customer Service team stood out in such a positive way. It’s great to know Yessica was able to support you promptly, professionally, and with the care you deserved, going the extra mile is exactly what we strive for.
We’ll be sure to pass along your kind words to her, it will mean a lot.
We really appreciate your support and trust. If you ever need anything else, don’t hesitate to reach out. We’re here for you.
Antwoord van Prolonlife
Hi Rita,
Thank you for taking the time to share your feedback with us.
We truly value all feedback, as it helps us continue improving both our program and the support we provide to our customers. If there is anything in particular you would like us to address or if you have any questions about your experience, please don’t hesitate to reach out to us at customerservice@l-nutra.com.
We’re here to help.
They explain why this is good for you
They explain why this is good for you, offering research to back it up and how it is safe for most people.
However, when ordering it’s not completely clear what the differences (items, choice of flavors and total cost) in the 5-day fasts are.
27 april 2026
Antwoord van Prolonlife
Hi Holmurk,
Thank you for sharing your feedback with us. We’re very happy to hear that you appreciated the educational information and research behind the program, as our goal is always to help our customers feel informed, safe, and supported throughout their journey.
At the same time, we completely understand how the ordering process and differences between the 5-day fasting options, including flavors, included items, and pricing, may have felt unclear or confusing. We truly appreciate you bringing this to our attention, as feedback like this helps us continue improving the customer experience and making our offerings easier to understand.
Please know that our Customer Service team is always more than happy to support and guide you through the different program options to help you find the best fit for your goals and preferences.
Our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to help address and clarify your concerns and work with you toward a resolution.
Your satisfaction is very important to us, and we are dedicated to making your experience as smooth and positive as possible.
We look forward to your response and the opportunity to support you further.
I have used Prolon FMD twice now and…
I have used Prolon FMD twice now and loved it!! I can't wait to try the NexGen box!! I love the idea of the soup being pre-made and eating it hot or cold 😎 It will be so convenient for work 🙂
I am especially looking forward to this round. Just found out I am pre-diabetic, and I want to curb my cravings to sugar.
27 april 2026
Antwoord van Prolonlife
Hi Lori,
Thank you so much for sharing this with us.
We’re really glad to hear you’ve enjoyed your Prolon FMD experiences and that you’re excited to try the Next Gen box, it’s great to know the convenience of the ready-to-eat soups is going to fit well into your work routine.
We also appreciate you sharing what you’re currently focusing on with your health. Many people choose to incorporate Prolon as part of a broader lifestyle approach, and it’s encouraging to hear you’re feeling motivated going into this next round.
We’re grateful to have you with us and truly appreciate your trust and enthusiasm. If you ever have any questions or need support along the way, don’t hesitate to reach out. We’re here for you.
Antwoord van Prolonlife
Hi Catherine,
Thank you so much for sharing this with us.
We’re really glad to hear you found the program tasty and satisfying that balance of enjoyment and support is exactly what we aim for.
We truly appreciate your feedback and your support. If you ever have any questions or need anything along the way, don’t hesitate to reach out. We’re here for you.
Easy and doesn't taste that bad
Easy and doesn't taste that bad. However it's extremely expensive and it is not personalized for me. I have double the results using AI to design a fast for my personal goals and it's tailored to my BMI and labs.
27 april 2026
Antwoord van Prolonlife
Hi Deb,
Thank you for taking the time to share your feedback with us. We’re glad to hear that you found the program easy to follow and that the taste was acceptable, but we’re sorry to hear that you feel it was expensive and not personalized to your needs. We completely understand that personalization is an important part of any health journey, and we truly appreciate your honesty.
Hi, thank you for sharing your feedback. We completely understand that ProLon can feel like a significant investment in your health, and we truly appreciate your perspective. Our program is backed by over 20 years of scientific research, and we are continuously working to enhance our offerings while finding ways to make them as accessible and cost-effective as possible so more people can benefit from it. At its core, ProLon is designed as a proactive approach to longevity and overall wellness, supporting your body at a cellular level today with the goal of promoting long-term health. Many of our customers view it as an investment in their future well-being, as prioritizing prevention and metabolic health now can help reduce the burden of more complex health challenges down the line. We also work hard to offer promotions and discounts whenever possible to help make the program more accessible while still delivering its full benefits.
Our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to help address and clarify your concerns and work with you toward a resolution. Your satisfaction is very important to us, and we are dedicated to making your experience as smooth and positive as possible. We look forward to your response and the opportunity to support you further.
We also want to share that if you are looking for a more guided and personalized experience, we do offer the ProLon Guided Health Program, a comprehensive solution designed to help support metabolic health, sustainable weight management, and overall cardiometabolic outcomes in a structured, science-backed way.
This program includes:
* One Prolon 5-Day Kit each month
* Two monthly 30-minute consultations with a registered dietitian
* Quarterly lab testing (CBC and CMP) to track measurable progress
* A welcome kit with a smart scale and The Longevity Diet book
* Complimentary Prolon membership with 20% product discounts and double loyalty points
The program is designed to go beyond short-term approaches by addressing the root causes of metabolic imbalance, with potential benefits including support for visceral fat reduction while preserving lean body mass, improved cholesterol, triglycerides, and glucose regulation, enhanced insulin sensitivity, reduced inflammation, and improved energy and long-term metabolic resilience.
You can learn more here: [https://bit.ly/Prolonguidedprogram](https://bit.ly/Prolonguidedprogram) or book a call with one of our advisors here: [https://calendly.com/kristiespurling/prolon-program-consult](https://calendly.com/kristiespurling/prolon-program-consult)
While AI-based approaches can feel helpful for personalization, it’s important to note that our program is grounded in over 20 years of clinical research and controlled trials demonstrating physiological and metabolic benefits that go beyond generalized or algorithm-based recommendations.
Great Product/Service
I like the product and the customer service. It is a quality product and the advertising and true to what is being provided. That said, it is a little hard for me to justify the cost from the customer perspective. I understand that from the seller you need to meet your targets but as I look at my weekly budget for my regular groceries I pay below of what I pay for the Polon.
27 april 2026
Antwoord van Prolonlife
Hi Katarzyna,
Thank you for taking the time to share your thoughtful feedback with us. We’re very happy to hear that you like the product, find it to be high quality, and have had a positive experience with our customer service.
Prolon was developed as a scientifically designed fasting mimicking program intended to provide the benefits of fasting while helping mitigate some of the common challenges associated with prolonged water fasting, including issues such as adherence, dehydration, muscle loss, nutrient deficiencies, and other potential risks. At the same time, it is designed to support the body in maintaining a fasting-like state associated with cellular rejuvenation and metabolic benefits, including processes such as autophagy.
The program provides a carefully developed combination of micro and macronutrients intended to nourish the body while still supporting the fasting state. We are proud of the quality of our ingredients and their role in helping avoid unnecessary activation of nutrient-sensing pathways during the 5-day cycle. Some of the key ingredients include:
* Nuts: rich in heart-healthy monounsaturated fats
* Olives: source of healthy fats and antioxidants
* Flax seeds: provide omega-3 fatty acids, fiber, and essential nutrients
* Vegetables: supply vitamins, minerals, and dietary fiber
* Lentils: provide plant-based protein, fiber, and nutrients
* Spices: enhance flavor and may provide anti-inflammatory properties
* Prebiotic fiber: supports gut health and beneficial bacteria
There have also been clinical studies on the Fasting Mimicking Diet showing improvements in markers related to aging and metabolic health. Research suggests that periodic 5-day cycles may help support reductions in weight, waist circumference, BMI, body fat, blood pressure, and IGF-1, while also supporting metabolic and cardiovascular health markers in healthy adults.
We truly understand and respect your feedback regarding cost. Our team is continuously working to make the program as accessible and cost-effective as possible while maintaining the integrity of the science and quality behind it. We also regularly offer promotions and discounts to help make the program more accessible.
Please know that we are genuinely grateful for your support and your input. If you have any additional questions or would like assistance, you can always reach us at customerservice@l-nutra.com or by phone at +1 (888) 926-5370. We are always here to support you on your wellness journey.
Quick help with a question on my recent…
Quick help with a question on my recent order. Have used Prolon several times and always have good service as well as good results.
18 februari 2026
Antwoord van Prolonlife
Hi Bettie,
Thank you so much for sharing this with us.
We’re really glad to hear you’ve consistently had good experiences with Prolon, both in terms of service and results, it means a lot to have your continued trust.
If anything, else comes up in the meantime, don’t hesitate to reach out. We’re here for you.
I love the one day version
I love the one day version. I still wish you made the soups/kale crackers to purchase individually. There's some days I just need that for a quick lunch!
27 april 2026
Antwoord van Prolonlife
Hi Tara,
Thank you so much for sharing this with us.
We’re really happy to hear you love the One-Day Reset, it’s great to know it’s been a helpful option for you. We also truly appreciate your feedback about wanting the soups and kale crackers available as individual items for quick lunches.
That’s really helpful insight and we’ll be sure to share it with our team as we continue thinking about how to make our products even more flexible and convenient.
We’re grateful for your support and for taking the time to share your thoughts with us. If you ever have any other questions or ideas, don’t hesitate to reach out. We’re here for you.
ProLon makes a fasting reset easy
ProLon makes a fasting reset easy. The soups are tasty and satisfying. We were never hungry. This time I will allow myself a few ounces of coffee first thing in the morning to stave off caffeine withdrawal headaches.
27 april 2026
Antwoord van Prolonlife
Hi Anne,
Thank you for sharing your experience with us.
We’re so glad to hear that Prolon helped make your fasting reset feel manageable and satisfying, and that you found the soups enjoyable and not feeling hungry throughout the program. It’s also helpful to hear your personal insight about adjusting caffeine intake to support your transition, everyone’s experience can be a bit different, and feedback like this is really valuable.
We truly appreciate you taking the time to share your thoughts, and we’re grateful to be part of your wellness journey.
If you ever have any questions or need support, don’t hesitate to reach out. We’re here for you.
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