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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Great products and fast shipping.
19 mei 2026
Antwoord van Prolonlife
Hi Pat,
Thank you so much for your kind words! We’re so happy to hear you’re enjoying the products and had a great shipping experience as well. We truly appreciate your support and are grateful to be part of your wellness journey!
Please don't hesitate to reach out if you ever have any questions. We are here for you.
Excellent products
Easy to understand and make great choices. All the products are delicious and keep me satisfied.
20 mei 2026
Antwoord van Prolonlife
Hi Laurie,
Thank you so much for your wonderful feedback! We’re happy to hear that you found the program easy to follow and that the products helped keep you satisfied throughout your journey.
Making healthy choices feel approachable, enjoyable, and sustainable is exactly what we strive for. We truly appreciate your support and are so grateful to be part of your wellness journey!
very easy to connect and clear
19 mei 2026
Antwoord van Prolonlife
Hi Kathryn,
Thank you so much for your kind words! We’re so happy to hear that your experience felt easy, clear, and supportive. Making sure our community feels informed and connected throughout their wellness journey is incredibly important to us.
We truly appreciate your support and look forward to continuing to be part of your longevity journey!
I feel amazing on this program.
I feel amazing on this program.
This is my 2nd time to do it.
It makes my body feel so clean.
I would like to do it 3 times a year.
13 mei 2026
Antwoord van Prolonlife
Hi Leslie,
Thank you so much for sharing your experience with us! We’re so happy to hear that you’re feeling amazing on the program and that this is already your second ProLon cycle.
Many customers describe a similar feeling of reset and rejuvenation after completing the 5-day fast, and it’s wonderful to hear it has been such a positive experience for you. Completing the program a few times per year can be a great way to support long-term wellness and healthy lifestyle habits.
We truly appreciate you being part of the Prolon community and look forward to supporting you on your longevity journey!
Love the new organic version
Love the new organic version! Flavor profile and quality of the ready made soups are hands down a solid upgrade. I did however think more things were going to be upgraded.
Would love to see a new/different flavor/style L-bar throughout the days, since it is an every day item. Love the kale almond crackers. Never loved olives until these!! Choco crisp is a nice sweet treat!
This is the first fast I’ve ever done and I’m so happy with it. Have done it 3X. Look forward to maintaining the feeling with the subscription.
18 mei 2026
Antwoord van Prolonlife
Hi Barbara,
Thank you so much for your thoughtful and detailed feedback!
We’re so happy to hear how much you’ve been enjoying the new organic ready-to-eat soups and that the updated flavor profile and quality felt like a meaningful upgrade for you.
We also truly appreciate your suggestions regarding additional variety for the L-Bars. Feedback like this is incredibly valuable, and we’re always listening to ways we can continue improving the experience while maintaining the integrity of the fasting-mimicking program.
It made us smile to hear that the olives won you over and that the Choco Crisp became a favorite sweet treat! And most importantly, we’re thrilled to hear that this has been such a positive fasting experience for you, especially as your first fast ever. Completing the program 3 times is an amazing accomplishment, and we’re honored to continue supporting you through your wellness journey.
Please don't hesitate to reach out if you have any question in the future. We are more than happy to support you.
Excellent Customer Service
Very pleased with the product, the company and their customer service
18 mei 2026
Antwoord van Prolonlife
Hi Kathleen,
Thank you so much for your thoughtful review! We’re truly happy to hear that you’ve been pleased not only with the product, but also with our team and customer service experience.
Providing support and helping our customers feel cared for throughout their wellness journey is incredibly important to us.
We truly appreciate your support and look forward to continuing to be part of your health journey!
The product is great
The product is great. The support is great. The attention to details is great.
Makes it much easier to endure the five days of fasting 🙏🏼
18 mei 2026
Antwoord van Prolonlife
Hi Lia,
Thank you so much for your kind words and thoughtful feedback!
We’re so happy to hear that you’ve had a great experience not only with the product, but also with the support and care provided along the way. We know the 5-day journey can be challenging at times, so it means a lot to hear that the program and guidance helped make the experience more manageable for you.
We truly appreciate your support and are grateful to be part of your wellness journey!
The taste of the ingredients in the kit…
The taste of the ingredients in the kit was very good. It made it possible for me to get through the full 5 days with quite ease.
18 mei 2026
Antwoord van Prolonlife
Hi Candis,
Thank you so much for sharing your experience! We’re so happy to hear that you enjoyed the taste of the foods included in the kit and that it helped make the 5-day program feel much easier to complete.
Creating a fasting-mimicking program that is both scientifically designed and enjoyable to follow is very important to us.
We truly appreciate your support and are grateful to be part of your wellness journey!
Very quick and effective customer service…
Norma was so quick to help me correct an address mistake that I
made during the ordering process. The order with the updated address was shipped and a notification was sent within 24 hours. Thank you!
15 mei 2026
Antwoord van Prolonlife
Hi Mary,
Thank you so much for taking the time to share this with us.
We’re so glad to hear Norma was able to assist you quickly and help correct the address issue right away. It’s wonderful to know the updated order was processed and shipped promptly so everything could get back on track smoothly.
We’ll be sure to pass along your kind words to Norma, she’ll truly appreciate it. Thank you again for your support, and we hope you enjoy your order!
Fabulous products
Fabulous products, delivers as advertised, wonderful customer support. I’ve been with Prolon on/off for many years & they never disappoint.
15 mei 2026
Antwoord van Prolonlife
Hi Sabrina,
Thank you so much for sharing your experience with Prolon. We’re truly grateful for your continued support over the years and so glad to hear that the products, delivery, and customer support have consistently met your expectations.
It means a lot to have you as part of our community, especially as someone who has trusted us on and off for many years. We look forward to continuing to support you on your wellness journey.
Please don’t hesitate to reach out if you ever have any questions. We’re here for you.
This fast was excellent
This fast was excellent. I didn't love all of the foods, but the quality was there. It definitely helped me reset and get on track in order to get my GLP-1 journey going. I really liked having a fast that you actually eat foods with! Much more doable.
23 april 2026
Antwoord van Prolonlife
Hi Tee,
Thank you so much for taking the time to share your experience with us. We’re so happy to hear that the program helped you feel reset and supported you in getting back on track with your wellness goals and GLP-1 journey.
We completely understand that not every food item may be everyone’s favorite, so we truly appreciate your openness and thoughtful feedback regarding the meals.
We’re very glad to hear that you still felt the quality of the program and found the fasting experience much more doable while still being able to nourish your body with carefully designed foods throughout the process.
Our goal is always to create a fasting experience that feels both effective and sustainable, while helping support individuals on their unique health journeys, so it’s wonderful to hear this resonated with you.
Please don’t hesitate to reach out if you ever have any questions or need additional support. We’re here for you.
Antwoord van Prolonlife
Hi Todd,
Thank you so much for your kind feedback. We’re very happy to hear that you found the ordering process easy and that you enjoyed the products.
Our team works hard to create a smooth experience from start to finish, so it truly means a lot to hear that reflected in your experience with us.
Please don’t hesitate to reach out if you ever have any questions or need additional support. We’re here for you.
A good easy to follow weight loss tool…
Loved how the program was individually packaged by day and very easy to follow. It really did seem to burn fat as advertised and two months later I have kept off the 5 pounds I lost. I feel it did reset my metabolism, as I struggled to lose weight no matter what I did previously.
14 mei 2026
Antwoord van Prolonlife
Hi Laura,
Thank you so much for sharing your experience with us. We’re thrilled to hear that you found the program easy to follow and that the daily packaging helped make the experience feel simple and organized throughout your fast.
We’re also very happy to hear that you experienced lasting results and have been able to maintain the weight loss even months later. It’s incredibly encouraging to hear that the program helped you feel more reset after previously struggling to see progress despite your efforts.
Our goal is always to provide a science-backed program that supports metabolic health, wellness, and sustainable habits, so feedback like yours truly means a lot to our team.
Please don’t hesitate to reach out if you ever have any questions or need additional support. We’re here for you.
Website NOT user friendly
Website and making a purchase is very confusing.
I sent a email to customer service and have still not heard by 3 days later.
13 mei 2026
Antwoord van Prolonlife
Hi Andrew,
Thank you for sharing your feedback with us, and we’re very sorry to hear that the website and purchasing process felt confusing. We completely understand how frustrating that experience can be, especially when you are also waiting for support.
We wanted to mention that our team has attempted to reach you multiple times to assist in resolving your concerns. If there may have been any communication issues or if our responses did not come through successfully, we would highly encourage contacting us directly through any of the channels below so we can better support you.
Main Prolon Number: +1 (888) 926-5370 or customerservice@l-nutra.com
Also, we have shared your comments with our internal team so we can continue improving the website experience and help prevent these types of challenges moving forward. Thank you again for bringing this to our attention.
We truly look forward to supporting you further and helping make your experience smoother. Please don’t hesitate to reach back out. We are here for you.
Antwoord van Prolonlife
Hi Rosemarie,
Thank you so much for sharing your feedback with us. We’re very happy to hear that your ordering experience went smoothly this time and that everything worked well for you.
We truly appreciate your continued support and are grateful to be part of your wellness journey.
Please don’t hesitate to reach out if you ever have any questions or need additional support. We’re here for you.
Great Taste.
11 mei 2026
Antwoord van Prolonlife
Hi Raman,
Thank you so much for your feedback. We’re so happy to hear that you enjoyed the taste of the program.
Our team works very hard to create products that are both scientifically designed and enjoyable to incorporate into your wellness journey, so it truly means a lot to hear this.
We’re here whenever you need guidance or support, don’t hesitate to contact us.
Grateful for the box fix
Grateful for the box fix. Just bummed I couldn’t start my fast due to missing box #1.
11 mei 2026
Antwoord van Prolonlife
Hi Cynthia,
Thank you for sharing your feedback with us. We’re very glad to hear the box issue was resolved, but we’re truly sorry that the missing Box #1 prevented you from starting your fast as planned. We completely understand how disappointing that must have been.
We appreciate your patience as our team worked to make this right, and we’re always here to support you if you need anything further or would like help getting started.
Please don’t hesitate to reach out to us at customerservice@l-nutra.com. We’re here for you.
Smooth process well organized
11 mei 2026
Antwoord van Prolonlife
Hi John,
Thank you so much for your feedback. We’re very happy to hear that you found the process smooth and well-organized.
We truly appreciate your support and are glad your experience went well. Please don’t hesitate to reach out if you ever need anything. We’re here for you.
Antwoord van Prolonlife
Hi Denny,
Thank you so much for sharing your feedback. We’re glad to hear you found the process simple and easy to follow.
We truly appreciate your support. Please don’t hesitate to reach out if you ever need anything. We’re here for you.
Started using FMD back in 2018
I started using FMD in 2018 when breast cancer was first found. I used for 6 consecutive months and I found it to be easy and I felt well. I used it every now and then, more to 'clean up my eating' which is easier to do after a 5 day FMD. Once I became metastatic (I'll always wonder if I kept with FMD if I could have avoided that 2nd diagnosis but life if full of 'woulda, coulda, shoulda' questions) I have found that side affects to the infusions are greatly decreased. Now, there are new flavors of soup which I love...and the 1 day fasts which I now do also. I love that I know that I am doing something good...not only for my body, but for my cells! And...it is easy, well researched and well supported with customer service people, texts, videos and FB.
8 april 2026
Review zonder uitnodiging
Antwoord van Prolonlife
Hi Mary,
Thank you so much for taking the time to share your experience with us.
We’re truly honored to hear how you’ve incorporated the FMD into your routine over the years and that it has continued to feel supportive, easy to follow, and helpful as part of your wellness practices. It means a great deal to know you’ve also been enjoying the newer soup flavors and the 1-day fast options.
We’re especially grateful for your kind words about the program being well-researched and supported. Our team is deeply committed to providing not only science-backed nutrition, but also ongoing education and support through multiple channels so you feel guided every step of the way.
We appreciate you being part of the community and sharing your journey with us. Please don’t hesitate to reach out if you ever need anything. We’re always here for you.
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