The zoom calls with Cynthia Sass were very helpful, offered great tips, and made following the plan easy. It helped me keep focus daily on why I was doing this and gave me the motivation to continue.... Toon meer
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This company is top notch. Everything from their products, to the research that backs them. Their support through the fasting experience, as well as additional product solutions outside of your main... Toon meer
They sneakily signed me into subscription -I tried to cancel and they said order. Sent already even tho I sent email minutes after. Then when I emailed again response was from different co referring m... Toon meer
Bedrijf heeft geantwoord
I love the Prolon FMD programs, products, and customer service! All three are stellar and I have no doubt Prolon is helping me achieve the best health possible. Getting the benefits of fasting while e... Toon meer
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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Best fasting meal plan
My husband and I did the 5 day plan. It was very simple. I was not hungry and I had a lot of energy. I lost 4 pounds and have kept them off.
29 juni 2026
Antwoord van Prolonlife
Hi Elvira,
It’s wonderful to hear that you and your husband found the 5-Day Program simple to follow and that you felt energized throughout your fast! Congratulations on your results and on maintaining them.
We truly appreciate you sharing your experience and are so happy Prolon has become a helpful part of your wellness journey. Thank you for being part of our community!
Was very easy to set up the order and…
Was very easy to set up the order and I’m very grateful to continue my fasting through the years.
26 augustus 2026
Antwoord van Prolonlife
Hi Lucia,
We’re so glad to hear that ordering was easy and that Prolon has become a lasting part of your fasting routine!
Thank you for continuing to trust Prolon and for being part of our community over the years.
We truly appreciate your support and look forward to being here for you throughout your continued journey!
The man who helped me place my order…
The man who helped me place my order was fantastic. I tried to order on line but it would not accept my Visa card because I didn’t hit subscribe. This was what I was told when I asked why the error occurred. They said they were working on the issue but it wasn’t corrected when I tried to place my order in the 1 st wk of Aug 2026. The man on the phone helped me with my order and I’m expecting delivery next wk.
25 augustus 2026
Antwoord van Prolonlife
Hi Sharon,
We’re so glad to hear that our team member was able to step in and make the ordering process easier for you! We sincerely appreciate you sharing your experience and are happy to know that you received the support you needed to place your order.
We’re also sorry for the frustration you experienced when trying to place your order online. We understand how inconvenient it can be when a payment issue prevents you from completing your purchase, especially when you were not intending to subscribe.
We truly appreciate your patience and your feedback regarding the checkout experience. We’ll be sure to share it with the appropriate team as we continue working to improve the ordering process.
We hope your Prolon arrives smoothly next week and that you have a wonderful experience with your upcoming round!
Please don’t hesitate to reach out if there’s anything else we can do to support you.
Really could do without all the upsell…
Really could do without all the upsell once I went to the cart.
24 augustus 2026
Antwoord van Prolonlife
Hi Nancy,
Thank you for taking the time to share your feedback. We truly value your input and are committed to making the Prolon experience as smooth and positive as possible.
We sincerely apologize for the frustration caused by the additional offers you encountered during the checkout process. We understand how this can be frustrating when you’re simply trying to complete your purchase.
Our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to address your concerns and work with you toward a resolution.
Your satisfaction is very important to us, and we appreciate the opportunity to support you further. We look forward to hearing from you.
The process was smooth and intuitive
The process was smooth and intuitive. Customer Service was responsive to my query and the shipping fees that were charged in error were refunded immediately.
25 augustus 2026
Antwoord van Prolonlife
Hi Anindita,
We’re so glad to hear that your experience was smooth and intuitive. It’s wonderful to know our Customer Service team was able to quickly resolve the shipping fee issue and make the process easy for you. We truly appreciate you taking the time to share your experience with us!
Please don’t hesitate to reach out if we can assist with anything along your wellness journey. We’re here for you!
Bars are very filling
Bars are very filling. Helps you feel full longer to wait for the next meal a little longer.
24 augustus 2026
Antwoord van Prolonlife
Hi Mona,
We love hearing that the bars have been helping you feel satisfied between meals. Having a filling option to enjoy during the day can make the Prolon experience feel a little easier and more manageable.
We’re so glad the bars have been a helpful part of your journey, and we appreciate you sharing your experience with us!
Please don’t hesitate to reach out if you ever have questions or need support. We’re always happy to help!
Love the product
Love the product
I wanted to use the rewards and couldn’t- it’s close to impossible and it feels as if you’re squeezing every dime possible out of me
24 augustus 2026
Antwoord van Prolonlife
Hi Luann,
Thank you for taking the time to share your experience. We’re so glad to hear that you love the product, but we sincerely apologize for the frustration you experienced when trying to redeem your rewards. We understand how disappointing it can feel when something you’ve earned is difficult to use, and we truly value your feedback.
Our Customer Service Team has reached out to you directly via email from customerservice@l-nutra.com to help address your concerns and work with you toward a resolution.
Your satisfaction is very important to us, and we’re committed to making your experience as smooth and positive as possible. We look forward to hearing from you and having the opportunity to support you further.
If you're not addicted to soda
If you're not addicted to soda, it seems like this wasn't that hard. I had enough energy to go swimming multiple times that week and walk my big, crazy dog.
I did get results. I will be doing it again.
My husband had a harder time. But he is kind of addicted to coke. :-)
But it motivated him to get off of it. So all's well that ends well.
24 augustus 2026
Antwoord van Prolonlife
Hi Angela,
What a fun review! We’re so glad you found the 5-day experience manageable and were able to stay active throughout the week.
And we love hearing that it motivated your husband to make a positive change, too!
Thank you for sharing your experience, Angela, and we’ll be here to support you both on your next round.
I am getting the wrong order
I am getting the wrong order. I ordered the prepared soups not the powdered soups. I’ve now gotten two wrong orders. Have emailed and called and getting no responses.
24 augustus 2026
Antwoord van Prolonlife
Hi Beth,
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 sincerely apologize for the inconvenience and frustration caused by receiving the wrong products, especially after you’ve already tried reaching out to us. Our Customer Service Team has reached out to you directly via email from customerservice@l-nutra.com to help address your concerns and work with you toward a resolution.
Your satisfaction is very important to us, and we’re committed to making this right and ensuring you receive the products you originally ordered.
We look forward to hearing from you and the opportunity to support you further.
Easy and quick resolution to an issue
Easy and quick resolution to an issue! Thank you for taking the hassle out of dealing with concerns.
24 augustus 2026
Antwoord van Prolonlife
Hi Sue,
We’re so happy to hear that your concern was resolved quickly and smoothly, Sue! Taking the hassle out of getting the support you need is exactly what we strive for.
Thank you for trusting our team, and please don’t hesitate to reach out if we can ever help again.
I thought I canceled my subscription…
I thought I canceled my subscription but you keep sending it. Because you are making cancellations so difficult means you are a company I definitely want to avoid in the future.
24 augustus 2026
Antwoord van Prolonlife
Hi Susan,
Thank you for taking the time to share your experience. We truly value your feedback and sincerely apologize for the frustration surrounding your subscription cancellation.
Our Customer Service Team has reached out to you directly via email from customerservice@l-nutra.com to better understand what happened, address your concerns, and work with you toward a resolution.
Your satisfaction is very important to us, and we’re committed to making this experience as smooth and positive as possible. We look forward to connecting with you and supporting you further.
I have energy that I have not had in a long time.
The FMD Prolon Next package is easy to follow.
I followed the FMD "diet" exactly... this was my 1st time.
I lost 10lbs and inches off of my waistline and on the 1st day after finishing, I had energy that I have not had in a long time.
My Oura ring rates my cardiovascular health 1 year younger than my chronological age. (before FMD I was at my age)
I have taken lots of supplements & none of them have been as responsive as the Prolon Next FMD.
FMD is now a part of my stack.
24 augustus 2026
Antwoord van Prolonlife
Hi Paul,
Congratulations on completing your first Prolon Next Gen round! It’s wonderful to hear that you found the program easy to follow and experienced such positive changes in your energy and overall wellness.
Thank you for sharing your experience with us, and we’re excited to be part of your longevity journey going forward!
prolon keeps teasing with discounts and…
prolon keeps teasing with discounts and they never work when i order .. i'm probably at the end of dealing with the company after most recent order
24 augustus 2026
Antwoord van Prolonlife
Hi Scott,
Thank you for taking the time to share your experience. We’re truly sorry to hear about the frustration you’ve experienced with our promotional discounts, especially if you’ve had difficulty applying them to your orders.
Our Customer Service Team has reached out to you directly so we can better understand what happened with your most recent order and work with you toward a resolution.
We value your feedback and hope to have the opportunity to address your concerns and provide a better experience moving forward. Please don’t hesitate to reach out.
We’re here to support you.
I don't like being highjacked into…
I don't like being highjacked into purchasing subscriptions. I wanted just to try out your product. (good reviews from friends) However during my first purchase your site push me into a multiple monthly purchase.
I find this unacceptable. It has left me with such a bad feeling about your product.
I will still sample. But, you can be guaranteed I will search other products.
24 augustus 2026
Antwoord van Prolonlife
Hi Teresa,
We’re very sorry to hear that your first experience with Prolon left you feeling pushed into a subscription when you were simply looking to try the product. We completely understand how frustrating that must have been, especially after hearing positive recommendations from friends.
We truly value your feedback and want to better understand what happened during your checkout experience so we can look into it and identify how we can make the process clearer for our customers.
We’d also love the opportunity to help turn this experience around for you. Please feel free to reach out to us directly so we can look into your order and see how we can best assist you.
Thank you again for giving Prolon a try and for sharing your honest feedback. We hope we have the opportunity to provide you with a much more positive experience.
Please don’t hesitate to reach out. We’re here for you.
Still not received the package
Still not received the package.Its been nearly one month. Very poor management compared to other business.
28 juli 2026
Antwoord van Prolonlife
Hi Timothy,
we’re sorry your order has taken longer than expected, and we completely understand how frustrating that must be.
Orders to Hawaii can take 3–4 weeks to arrive, which is longer than our standard 5–10 business-day delivery timeframe.
We appreciate your patience and would be happy to help with any questions about your shipment.
Please don’t hesitate to reach out. We’re here to help.
I love losing visceral fat while keeping muscle
I love that I am learning to eat less!
I feel so much better and its great to be able to speak with someone that is helpful in answering my questions.
21 augustus 2026
Antwoord van Prolonlife
Hi Paul,
Congratulations on completing your first Prolon Next Gen round! It’s wonderful to hear that you found the program easy to follow and experienced such positive changes in your energy and overall wellness. We truly appreciate you sharing your experience with us, and we’re excited to be part of your longevity journey going forward!
Since you’ve had such a positive experience with your first round, you may also be interested in learning more about our Cardiometabolic Program through L-Nutra Health. This is an FMD program designed for individuals looking to support weight management, improve metabolic health, and promote long-term wellness.
The program provides ongoing support from Registered Dietitians, lab monitoring, multiple rounds of the FMD, and personalized nutrition guidance to help you stay on track and continue making sustainable progress.
If you’re interested in learning more, feel free to reach out to support@l-nutrahealth.com, and their team would be happy to walk you through the details.
And of course, if you ever have questions along the way, please don’t hesitate to reach out. We’re always here to support you!
Great Support Team
David, of the Support Team, was very helpful in my wanting to edit my 5 Day FMD subscription. He answered questions I had about items in the collection and he also made the changes in my subscription for me.
21 augustus 2026
Antwoord van Prolonlife
Hi Katherine,
We’re so glad David was able to make updating your subscription simple and answer all your questions.
Providing personalized support and making sure you feel confident with your Prolon products is incredibly important to us.
Thank you for recognizing our Support Team, and please don’t hesitate to reach out whenever we can help.
Phone support was excellent, but
Phone support was excellent. My problem with Prolon is mostly about communications: I started a subscription...once a month for three months, and I just got an email saying that I'm "getting the last part of my shipment.' What!?? Haven't even gotten the first of three shipments ! And this confusion is only one example...
19 augustus 2026
Antwoord van Prolonlife
Hi Julie,
Thank you for taking the time to share your experience. We truly value your feedback and are glad to hear that our phone support was excellent.
We sincerely apologize for the confusion and frustration caused by the communication regarding your subscription and shipment. We completely understand how concerning it would be to receive a message suggesting you were receiving the last part of your shipment when you had not yet received the first three orders as expected.
Our Customer Service Team has reached out to you directly via email from customerservice@l-nutra.com to help clarify what happened and work with you toward a resolution.
Your satisfaction is very important to us, and we’re committed to making your experience as smooth and positive as possible. We look forward to connecting with you and supporting you further.
Looove my 5-day PROLON!
Looove my 5-day PROLON!
This time trying new Gen!
This is my Round 21🎉
21 augustus 2026
Antwoord van Prolonlife
Hi Yelena,
Congratulations on completing your Round 21! 🎉 That’s incredible. We absolutely love seeing your enthusiasm for Prolon and hearing that you’re enjoying the new generation. Thank you for continuing to make Prolon part of your longevity journey. Here’s to many more successful rounds!
We loved reading your experience and we’re excited to be part of your longevity journey going forward!
I couldn't be happier - 5 day Next Gen
I couldn't be happier with my 1st 5-day FMD Next Gen. I completed it about 3 weeks ago and the results have been life changing. Also, the quality of everything has been top notch. Highly recommend it.
21 augustus 2026
Antwoord van Prolonlife
Hi Brooks,
Congratulations on completing your first 5-day Prolon Next Gen.
We’re so happy to hear that you were pleased with the quality of the products and had such a positive experience.
Thank you for your recommendation and for sharing your journey with us. Please don’t hesitate to reach out. We’re always here to support you!
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