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Beauty & Well-being

Prolonlife

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201 reviews

4.2201 reviews
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About Prolonlife

Data updated
Website
prolonlife.com
Category
Beauty & Well-being
Location
United States
Status
Unclaimed
Last 12 months
201 reviews
Replies to negative
97% (31/32)
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About this business

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.

Written by the business, not verified by us.

Is Prolonlife legit?

Prolonlife (prolonlife.com) has a 4.2 out of 5 rating on OK.one, based on 201 user reviews collected here. It is listed under Beauty & Well-being and its reputation is good. 77% of reviews are 4 stars or higher and 8% are 1 star; The business has replied to 97% of negative reviews; Reviews mostly discuss Product, Quality, User experience. Last updated 2026-08-12.

What reviewers say

AI generated

Reviewers had a great experience with this company. Customers frequently highlight the exceptional quality and delicious taste of the products, noting that the structured daily routines make fasting surprisingly satisfying and easy to follow. Consumers consistently praise the professional guidance and responsive customer service representatives who quickly resolve questions and assist with purchases. However, some reviewers were not happy with ordering complications, mentioning unexpected subscription renewals and difficulties managing automated shipments. A few other people also felt that certain food flavors were unappealing or grainy, while others reported frustrating shipping delays. Some individuals additionally experienced missing components in their delivered kits or found specific snack items difficult to enjoy.

Auto-generated from all reviews of this business. For reference only.

What people say

I need to get the item quickly - I still haven't received it yet

Still haven't received it? It's been way too long. Looking forward to it

Reply from Prolonlife2026-06-15

Hi Futao, Thank you for taking the time to reach out and share your experience. We truly understand how frustrating this situation must feel, especially when you are still waiting for your order, and we sincerely apologize for the inconvenience this has caused. We want to reassure you that our Customer Service Team has already reached out to you directly via email from [email protected] to help review your order, clarify what happened, and support you in resolving this as quickly as possible. We completely understand your concern around the delay, and your experience is important to us. We are actively here to assist you and ensure this is addressed properly. Your satisfaction remains a priority for us, and we are committed to making this right and supporting you through the process. We look forward to your response and the opportunity to further assist you. Our team is here to support you every step of the way.

Way too many emails for me.

Reply from Prolonlife2026-06-12

Hi Annette, Thank you for your feedback, and we’re sorry to hear that you’re finding our emails overwhelming. We really appreciate you bringing this to our attention. You can always unsubscribe from our email list by clicking “Unsubscribe” at the bottom of any email. If you are also receiving text messages, you can reply “STOP” to opt out. Please keep in mind that if you unsubscribe, you may miss helpful updates, including daily tips and guidance during your fast, as well as important information related to group coaching or recorded sessions if you are participating in those programs. Our goal is to keep you informed, educated, and supported throughout your journey, but we absolutely respect your preferences if you choose to opt out. If you would prefer, you can also contact our Customer Service team at [email protected]. Thank you again for your feedback. We truly appreciate it.

Great customer service

Great customer service! Keep the telephone!!!

Reply from Prolonlife2026-06-09

Hi Toby, Thank you for your wonderful feedback. We’re thrilled to hear you had a great experience with our customer service team. We also appreciate your note about the phone support, it’s always helpful for us to understand what channels our customers value most. We’re grateful for your support and are always here whenever you need us.

Very responsive to questions and any…

Very responsive to questions and any changes that need to be made with subscriptions. L Protein drink is the best protein drink I have tried.

Reply from Prolonlife2026-06-09

Hi Barbara, Thank you so much for taking the time to share your experience. We’re truly happy to hear that you’ve found our team responsive and supportive when it comes to your questions and subscription needs. We’re especially glad to hear you’re enjoying the L Protein drink, it means a lot to know it stands out as the best protein drink you’ve tried. We really appreciate your support and are always here if you need anything moving forward.

Too much Minnestroni soup!

Reply from Prolonlife2026-06-11

Hi Ron, Thank you for taking the time to share your experience. We truly value your feedback and appreciate the opportunity to learn more about what happened. We sincerely apologize for the inconvenience and frustration this situation has caused. This is certainly not the experience we want our customers to have. Our Customer Service Team has already reached out to you directly via email from [email protected] to further review your concerns, provide additional clarification, and work with you toward a resolution. We have also extended a special accommodation as a gesture of goodwill and appreciation for your support. Your satisfaction is very important to us, and we remain committed to making your experience as positive as possible. We look forward to hearing back from you and appreciate the opportunity to continue supporting you on your wellness journey.

Great experience

Great experience! I expected to be hungry but it was very doable and eye opening! Food was tasty enough.

Reply from Prolonlife2026-06-11

Hi Kam, Thank you so much for sharing your experience! We're delighted to hear that the program was more manageable than you expected and that it provided some eye-opening insights along the way. One of our goals is to make fasting more approachable while still supporting the body's natural rejuvenation processes, so it's wonderful to hear that the experience felt doable for you. We're also glad you enjoyed the food! Thank you for being a part of the Prolon community and for taking the time to leave your feedback. Wishing you continued health and wellness on your journey!

Hard to cancel and a very deceptive

Hard to cancel and a very deceptive, subscription plan. You will likely be signed up for a subscription, make sure to cancel as you will not likely do package again. The fast is not worth the money and could be done on your own. The meals are terrible.

Reply from Prolonlife2026-06-08

Hi Peter, 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 you experienced regarding the subscription process, as well as your disappointment with the meals and overall value of the program. While taste preferences can vary from person to person, Prolon was developed through more than 20 years of scientific research to provide specific nutrition designed to support the fasting-mimicking process while helping to address some of the challenges associated with traditional fasting. Our Customer Service Team has already reached out to you directly via email at [email protected] to address your concerns, clarify them, 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 genuinely welcome your feedback and would appreciate the opportunity to learn more about how to support you best. We look forward to your response and the opportunity to support you further.

Great resources

Great resources! Plenty of coaching opportunities. Wonderful FAQ section. The Facebook group helped me prepare as well. Many questions and comments from people currently doing the program. Very helpful to get me prepared to do this program.

Reply from Prolonlife2026-06-08

Hi Jennifer, Thank you for your wonderful review! We're so pleased to hear that you found the resources, coaching opportunities, FAQ section, and Facebook community helpful as you prepared for your Prolon journey. We work hard to provide our customers with the education, tools, and support they need to feel confident and informed throughout the program. It's especially rewarding to hear that connecting with others currently completing the program helped answer questions and made you feel more prepared. Thank you for being part of our community, and we wish you continued success on your health and longevity journey!

Great Prices and great value

Great Prices and great value. Customer service is very responsive.

Reply from Prolonlife2026-06-09

Hi Janet, Thank you so much for your kind review. We’re really glad to hear you’re finding both value and great pricing with Prolon, and that our customer service team has been responsive and helpful. We truly appreciate your support and are always here if you ever need anything or have any questions.

Too difficult to find where to pause or…

Too difficult to find where to pause or cancel. I'm getting an order I didn't want.

Reply from Prolonlife2026-06-09

Hi Zara, Thank you for taking the time to share your experience. We truly value your feedback and are sorry to hear about the frustration you encountered with managing your subscription. We are also sorry to hear that you did not find the process as intuitive as we aim for it to be. Within your personal customer portal, subscription management options such as pause, cancel, or modify are available by scrolling down in your portal. However, we understand that sometimes navigating these options can feel less straightforward than intended, and we appreciate you bringing this to our attention. Our goal is always to make the customer experience as simple and seamless as possible, and we appreciate you highlighting where we can improve. We would welcome the opportunity to better understand the challenges you experienced so that we can continue refining our platform and support. Our Customer Service Team has already reached out to you directly via email from [email protected] to further review your concerns and provide assistance. We are committed to working with you to ensure your account preferences are set up exactly as intended. Your satisfaction is very important to us, and we appreciate the opportunity to address your feedback. We look forward to hearing from you and continuing to support you however we can.

Very helpful

Very helpful, responsive, clear, personable customer service.

Reply from Prolonlife2026-06-08

Hi Alexandra, Thank you for your kind words! We're delighted to hear that you found our customer service team helpful, responsive, clear, and personable. Providing exceptional support is very important to us, and it's wonderful to know that your experience reflected that commitment. We truly appreciate your feedback and thank you for being part of the Prolon community!

The soups are tasty

The soups are tasty, particularly the Tomato soup. The Prolon system makes the 5 day fast simple and easy. I lost 5 pounds and am continuing to see benefits including increased energy and fewer sugar cravings.

Reply from Prolonlife2026-06-08

Hi Alfretta, Thank you for sharing your experience! We're delighted to hear that you enjoyed the soups, especially the Tomato Soup, and that the Prolon program helped make your 5-day fast simple and manageable. It's wonderful to hear that you've experienced benefits beyond the fast itself, including increased energy and fewer sugar cravings. We also appreciate you sharing your results and are excited to hear that you're continuing to notice positive changes. Thank you for being part of the Prolon community, and we wish you continued success on your health and longevity journey!

So Far So Good

I had a discovery call with the dietition and that went very well. She was very knowledgeable, kind and helped solve things that would have been a block for me personally. I later had a couple more questions, so I call the number she gave me, and I left a message. I received an email very shortly after, with a direct line to customer service. I call that number, spoke with the gentleman, he answered all my questions in detail. He also was knowledgeable. He was also kind and patient. Neither person put pressure on me, and were professionally friendly. I think customer service person's name is Manuel. So I'm off to a great start.

Reply from Prolonlife2026-06-05

Hi There, Thank you so much for taking the time to share your experience! We are excited to hear that your discovery call went so well and that both our nutrition and customer support teams were able to provide the guidance, education, and support you needed. It means a great deal to us to know that you felt heard, supported, and never pressured throughout the process. We will be sure to share your kind words with Manuel and the rest of the team. Feedback like yours is incredibly meaningful and reinforces our commitment to providing knowledgeable, compassionate, and personalized support to every member of our community. We're thrilled to hear that you're off to such a great start, and we look forward to supporting you throughout your Prolon journey. Thank you for being part of our community!

Very helpful and professional…

Very helpful and professional experience with representative on the phone! Thank you!

Reply from Prolonlife2026-06-04

Hi Victoria, Thank you so much for your kind words! We are delighted to hear that you had a helpful and professional experience with our team. Providing personalized support and guidance is very important to us, and we're grateful that you took the time to share your feedback. We will be sure to pass along your appreciation to the representative who assisted you. Thank you for being part of the Prolon community, and please don't hesitate to reach out if we can support you in any way along your health and longevity journey!

Great professional support

Having Nicole provide her Dietitian expertise and tips for success made the experience a great one. Now on my second Prolon FMD, and it’s going great.

Reply from Prolonlife2026-06-04

Hi Peter, Thank you so much for sharing your experience! We are delighted to hear that Nicole's expertise, guidance, and practical tips helped make your Prolon journey a positive one. It's especially exciting to hear that you are now on your second Prolon Fasting Mimicking Diet cycle and that it is going well. Consistency and support can make a meaningful difference, and we're honored to be part of your health and longevity journey. Thank you for placing your trust in us, and we wish you continued success with your current fast and beyond!

I love the protein shakes and the bars

I love the protein shakes and the bars. They both are so filling between meals.

Reply from Prolonlife2026-06-03

Hi Virginia, Thank you for taking the time to share your experience! We're so happy to hear that you're enjoying the L-Protein Shakes and Bars. One of our goals when developing these products was to create convenient, satisfying options that help support healthy nutrition habits while keeping you feeling full between meals. Thank you for your support, and we look forward to continuing to be part of your health and wellness journey.

Great products that work.

Great products that work with great communication and ability to ask questions and get rapid respnses.

Reply from Prolonlife2026-06-03

Hi Carol, We're excited to hear that you've had a positive experience with both our products and our support team. Providing evidence-based nutrition programs along with timely guidance and answers is an important part of what we do, and we're glad you've found value in that support. Thank you for being part of the Prolon community, and please know we're always here if you have any questions along the way.

Order page easy to follow and kits and…

Order page easy to follow and kits and products well explained.

Reply from Prolonlife2026-06-03

Hi Daniel, Thank you for sharing your feedback! We're delighted to hear that you found the ordering process easy to follow and that the products and kits were clearly explained. We work hard to make the experience as seamless and informative as possible, so it's wonderful to know that effort was reflected in your experience. Thank you for choosing Prolon, and we look forward to supporting you on your wellness journey.

My experience

My experience was great.it was an honest good time.thanks for the opportunity and God Bless Be Kind and Smile it's Free!!:)

Reply from Prolonlife2026-06-03

Hi Kristy, Thank you so much for your kind words and for taking the time to share your experience with us! We're delighted to hear that you had a positive experience and enjoyed your journey with Prolon. Your encouragement means a great deal to our team, and we're grateful for the opportunity to be part of your health and wellness journey. Thank you again for your support, and we wish you continued success, health, and happiness.

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