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
Bedrijf heeft geantwoord
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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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Antwoord van Prolonlife
Hi Kristen,
Thank you so much for your kind words!
We truly appreciate you taking the time to share your experience. It means a great deal to our team to hear that you found our customer service helpful and accommodating.
Providing thoughtful support and helping our customers have the best possible experience is something we care deeply about, so your feedback is incredibly encouraging.
Thank you again for your support, and please know that we're always here if you need anything in the future.
Good product backed by research
Good product backed by research, excellent daily online support coaching sessions. Soups are not very tasty and can be grainy, some of the flavors not good. Also, the price is high if you plan to follow their suggestion of every 25 days. BUT, it is a great reset and you will feel better if you can get through a few 5 day. The non powder are organic and taste better but are pricey
28 maart 2026
Antwoord van Prolonlife
Hi Phillip,
Thank you for taking the time to share such thoughtful feedback about your experience with Prolon.
We're delighted to hear that you found value in the research behind the program, the daily online coaching support, and the overall benefits you experienced. It's especially encouraging to hear that you felt it served as a meaningful reset and left you feeling better afterward.
We also appreciate your honest feedback regarding the taste and texture of some of the soups. We understand that flavor preferences vary from person to person, and feedback like yours helps us continue improving our products and overall customer experience.
We also understand that the program can represent a significant investment in your health. Please know that we are committed to enhancing our offerings and making them as cost-effective as possible. Prolon is built on more than 20 years of scientific research, and we are continually exploring ways to make the program accessible to as many people as possible while maintaining the quality and integrity of the formulation.
Thank you again for your balanced and thoughtful review. We truly appreciate your support and look forward to being part of your health journey in the future.
Ask me once I have the product
Ask me once I have the product. This survey was sent less than an hour after I ordered. Contact me once received and consumed. Your web site is more confusing
29 mei 2026
Antwoord van Prolonlife
Hi Albert,
Thank you for your message, and we appreciate you sharing your feedback with us.
The reason you receive an initial review request shortly after placing your order is that it is intended to capture your early experience with the ordering and checkout process itself. This helps us better understand and improve the website experience and service at the point of purchase. Additionally, it is also a way to let you know that our customer service team is here for you and ready to support you if you need anything.
Once you have received and had the opportunity to use the product, you will receive a separate follow-up survey where you can share your experience with the program itself.
We understand your concern, and we appreciate you taking the time to let us know how this feels from your perspective. If you have any additional questions, we’re here to help.
Antwoord van Prolonlife
Hi Deanna,
Thank you so much for your kind words!
We’re excited to hear your order arrived so quickly and that you had such a positive experience. We truly appreciate your support and hope you enjoy your Prolon journey!
Please don't hesitate to reach out if you have any questions. We are here for you.
Trust the quality based on the sponsors…
Trust the quality based on the sponsors of this product. My biggest concern recently has been potassium but actually only a moderate source of potassium for those on a low potassium diet due to Chronic Kidney Disease.
28 mei 2026
Antwoord van Prolonlife
Hi Cynthia,
Thank you for sharing your thoughts.
We’re glad to hear you feel confident in the quality of the product.
We also really appreciate you highlighting your perspective regarding potassium and CKD-related dietary considerations.
For individuals with specific medical conditions such as chronic kidney disease or those following medically prescribed dietary restrictions, we always recommend consulting with a healthcare provider to ensure any nutritional program is appropriate for their personal needs.
We are grateful for your trust. Thank you again for taking the time to share your feedback.
Great customer service
I had a very good experience with customer service.. I ordered the wrong generation in error. I don't like the tomato soup and customer service responded right away and sent a different flavor . I was very impressed.
28 april 2026
Antwoord van Prolonlife
Hi Sheryl,
Thank you so much for taking the time to share your experience.
We’re really happy to hear that our Customer Service Team was able to support you quickly and help resolve the issue with your order. We also completely understand that flavor preferences can vary, so we’re glad we could get you a better option that works for you.
Your feedback truly means a lot, and we’re so glad you had a positive experience with us. If you ever need anything in the future, we’re always here to help.
Top Pick
Just an excellent, well researched, effective product and excellent customer care for success.
27 mei 2026
Antwoord van Prolonlife
Hi Virginia,
Thank you so much for your kind words!
We’re truly happy to hear that you’ve found Prolon to be effective and well-researched, and that our Customer Care team has been able to support you along the way. Your feedback means a lot to us and we’re grateful to be part of your health journey.
We appreciate you taking the time to share your experience!
We have done Prolon twice and felt the…
We have done Prolon twice and felt the difference each time. While it can be challenging working in an office with many enticing smells during lunch time, the program makes you feel like you are still able to eat fulfilling that need
1 december 2025
Antwoord van Prolonlife
Hi Briana,
Thank you so much for sharing your experience!
We’re really happy to hear that you’ve completed Prolon twice and have felt a positive difference each time. We also appreciate your honesty about the challenges, especially being around food smells during the workday that’s something many people can relate to.
It’s wonderful to know the program has still helped you feel supported and satisfied through the experience. Thank you again for being part of the Prolon community and for sharing your journey!
We are always here for you when you need it!
Easy to order
Easy to order, and have delivered. Excellent product backed by years of research. Works well for me.
30 april 2026
Antwoord van Prolonlife
Hi Laurie,
Thank you so much for your kind feedback!
We’re really glad to hear that you found the ordering and delivery process easy, and that the product has been working well for you. It means a lot to know you value the research behind Prolon and are seeing positive results.
We truly appreciate you taking the time to share your experience!
feeling tortured for nothing
I felt bloated the entire fast period. And in fact continue to feel bloated now at 4 days post-fast...not as bad as during but much more so than pre-fast! I felt no boost in energy or clarity during or after the fast. My weight is down a whopping 4lb, but my body fat is UP 1% & lean body mass DOWN just 1lb. It feels basically like I tortured myself for nothing!
17 mei 2026
Antwoord van Prolonlife
Hi Abbigail,
Thank you for taking the time to share your experience. We truly value your feedback and are committed to ensuring you have the best possible experience with ProLon.
We wanted to acknowledge that feeling bloated is not a fun symptom to have. Bloating can sometimes occur during a significant dietary shift like Prolon, as it is a plant-based, fiber-rich program that can temporarily affect digestion and the gut microbiome. In most cases, these effects are short-lived and tend to improve once the body fully returns to a regular eating pattern, though individual responses can vary.
We also understand your frustration regarding the results you experienced. Outcomes such as energy, clarity, and changes in weight or body composition can differ from person to person depending on a variety of factors, including baseline metabolism, stress, sleep, and pre- and post-fast nutrition. While many participants report positive benefits, others may not experience the same effects after a single cycle.
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.
Antwoord van Prolonlife
Hi Brenda,
Thank you for your feedback!
We’re so glad to hear that you found the ordering process easy and appreciated the follow-up communication. We truly strive to make every step of the experience as smooth and supportive as possible.
We appreciate you taking the time to share this!
Excellent way to kick start a new way…
Excellent way to kick start a new way of eating. I gained so much energy, slept better and lost 5 pounds in 5 days. It has really made me think about how the foods I was eating were affecting my health.
Thank you Prolon!!!
26 mei 2026
Antwoord van Prolonlife
Hi Karen,
We’re so happy to hear about your experience!
It’s wonderful that you felt more energy, improved sleep, and saw such great results during your 5-day program. Even more importantly, we love hearing how it helped you reflect on the role food plays in your overall health.
Thank you for sharing your journey with us. We’re so glad to be part of it!
Antwoord van Prolonlife
Hi Steve,
We’re so glad to hear that!
It’s great to know the website experience has been working much better for you.
We truly appreciate you taking the time to share your feedback, it helps us continue improving.
If there’s ever anything we can assist you with, we’re always here to help.
What I like the best and second best!
What I like the best, after the products of course, is the customer service. I wish more companies had the same level of customer service.
26 mei 2026
Antwoord van Prolonlife
Hi Phyllis,
Thank you so much for your kind words!
We’re truly delighted to hear that you’re enjoying the products, and especially that our Customer Service team has made such a positive impression on you. That means a lot to us. We really strive to be as supportive and responsive as possible, so it’s incredibly rewarding to hear feedback like this.
We sincerely appreciate your support and your trust in us. If there’s ever anything you need, we’re always here to help.
My first round of the NextGen 5-day FMD…
My first round of the NextGen 5-day FMD went well!! Good results and I definitely felt a shift in how my body was processing food. I plan to continue on their recommended schedule to reap the full health benefits!
26 mei 2026
Antwoord van Prolonlife
Hi Krissy,
Thank you so much for sharing your experience!
We’re really happy to hear your first round of the NextGen 5-Day Fasting Mimicking Diet went well and that you noticed a positive shift in how your body was processing food. That’s wonderful feedback.
It’s great that you’re planning to continue on the recommended schedule consistency is truly key when it comes to experiencing the full range of long-term health benefits.
We really appreciate you being part of the Prolon community and look forward to supporting you on your continued journey.
Please, don't hesitate to reach out if you ever have any questions. We are here for you.
Checked all the boxes
This order checked all the boxes: On time. Everything accounted for. No breakage. Packaged well.
11 mei 2026
Antwoord van Prolonlife
Hi Susan,
Thank you so much for sharing your experience with us! We’re thrilled to hear that everything arrived on time, well-packaged, and with all items accounted for. Our team puts a great deal of care into every order, so it’s wonderful to know that care came through in your experience.
We truly appreciate your support and are so happy to have you as part of the Prolon community. Wishing you continued success and wellness on your longevity journey!
Great Product!
The online ordering experience was easy and all my questions were answered. The package shipped and arrived quickly. When it arrived, it was beautifully packaged with everything I needed to be successful. Daily tips and encouragement were sent explaining what to expect and how I would feel. I'm on Day 3 and this has been easy. I didn't believe I could feel more energized but I definitely do.
18 mei 2026
Antwoord van Prolonlife
Hi Michelle,
Thank you so much for sharing your experience with us! We are happy to hear that the ordering process felt smooth and supportive from the very beginning, and that your kit arrived quickly and beautifully packaged.
It’s especially wonderful to hear that you’re already feeling more energized by Day 3 and that the program has felt easier than expected. That is such encouraging feedback, and we’re so happy the daily guidance and support emails have been helping you feel prepared and confident throughout the process.
You are doing an amazing job, and we’re excited for you to continue experiencing the benefits of the program. Thank you again for trusting us to be part of your wellness journey!
Representative was very helpful and kind.
22 mei 2026
Antwoord van Prolonlife
Hi Dorene,
Thank you so much for your kind words! We’re truly happy to hear that you had a positive experience and felt well supported. Providing thoughtful, compassionate guidance is something we care deeply about, so your feedback truly means a lot to our team.
We’re grateful to be part of your wellness journey and are always here whenever you need support along the way!
Blood tests show the effectiveness of…
Blood tests show the effectiveness of the 5 day FMD.
22 mei 2026
Antwoord van Prolonlife
Hi Lisa,
Thank you so much for sharing this! We’re truly happy to hear that you’ve seen measurable results reflected in your bloodwork. Seeing those kinds of changes can be incredibly encouraging and is exactly why so much research and care has gone into the development of the Fasting Mimicking Diet.
We’re grateful to have you as part of the Prolon community and appreciate you trusting us to be part of your health and longevity journey. Wishing you continued success and wellness moving forward!
Fabulous anti inflammatory & mental clarity!
I have appreciated the ease of including 'fasting' in my full schedule. My joint stiffness always goes away. My eyes look healthier. Using Prolon's 5 day system & 1 day packs have helped me push past fat loss plateaus! I plan to continue to use Prolon products regularly. Thank you for the Research and creation. Very grateful!
20 mei 2026
Antwoord van Prolonlife
Hi Janette,
Thank you so much for sharing your experience with us! We’re truly grateful to hear how seamlessly Prolon has fit into your busy schedule and how supported you’ve felt throughout your wellness journey.
It’s especially wonderful to hear that you’ve noticed improvements in your joint stiffness, overall appearance, and success pushing through fat loss plateaus with both the 5-Day Program and the 1-Day Reset packs. We love hearing how customers are able to incorporate the program into a sustainable long-term lifestyle.
Thank you as well for recognizing the years of research and care behind the development of Prolon. Feedback like yours means so much to our team and continues to inspire the work we do every day.
We’re incredibly grateful to have you as part of the Prolon community and look forward to continuing to support you on your longevity and wellness journey!
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