I had a bit of a rollercoaster experience. On the positive side, the results were impressive. I lost 4lbs in the 5 day program. However, the side effects were a challenge. I had severe headaches and n... See more
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This was a professional, beautifully packaged protocol. The 5 day fast was really not difficult, and although I was afraid the food would be hard to get down, it was actually good. I am in love with t... See more
Company replied
I just finished Prolon’s 5-Day kit and honestly, I loved it. The meals felt surprisingly tasty for fasting-mimicking food: the soups were hearty, the bars weren’t chalky, and the nut mixes kept me fro... See more
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4.1
Great
10K reviews
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Superb Product and Service
I love the Prolon fasting mimic kits. I needed some replacement product and you folks were great, I eagerly await my shipment so I can do the 5 day fast. I feel so good when I use those fasts.
10 April 2026
Reply from Prolonlife
Hi Barbara,
Thank you so much for your kind words, we truly appreciate you taking the time to share your experience with us.
We’re so glad to hear how much you enjoy the Prolon program and that you’re feeling great when you complete your fasts, that’s wonderful to hear. It also means a lot to know that your experience with our team was a positive one while getting your replacement items.
We’re excited for you to start your next 5-day cycle and are here to support you every step of the way.
If you ever have any questions or need anything at all, please don’t hesitate to reach out.
I wanted to do express shipping
I wanted to do express shipping - and was charged $10 twice and have duplicate items.
It’s fine I will use them but the extra $10 is wrong and my discount code as a new customer didn’t work.
14 April 2026
Reply from Prolonlife
Hi Darlene,
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 the duplicate charges, items, and the issue with your discount code.
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.
This is my 3rd time doing the 5 day…
This is my 3rd time doing the 5 day prolon fast. Excited to cleanup the cellular junk!
14 April 2026
Reply from Prolonlife
Hi Kaleb,
Thank you so much for sharing this. We love hearing from returning customers!
It’s great to hear you’re heading into your third round with that mindset. Supporting the body’s natural “clean-up” and renewal processes is such a powerful part of the experience, and it’s wonderful that you’re excited about it.
We’re here to support you every step of the way, wishing you a smooth and rewarding cycle ahead!
The cell rejuvenation was apparent when…
The cell rejuvenation was apparent when I exercised the week after my fast. I was able to tackle jogging a hill this I was only able to walk up the weeks before.
14 April 2026
Reply from Prolonlife
Hi John,
Thank you so much for sharing this, we love hearing about moments like that!
It’s amazing to see how your body responded after the program, especially noticing that kind of improvement in your endurance and strength. Experiences like this are a great reflection of the deeper cellular and metabolic shifts that can happen during the fast.
We’re so glad to hear you’re feeling the benefits in such a tangible way, being able to go from walking to jogging that hill is a huge win!
Thank you again for sharing your experience, and we’re here to support you whenever you’re ready for your next round.
Reply from Prolonlife
Hi Lisa,
Thank you so much for your kind words! We’re so glad to hear you had a great experience with our team. We work very hard to provide you with access to all the tools you need to succeed.
Supporting you whenever you need us is truly important to us.
Please don’t hesitate to reach out anytime. We’re always here for you!
Great program
Great program. Didn’t have cravings. Planning to cycle this program throughout the year.
30 November 2025
Reply from Prolonlife
Hi River,
Thank you for sharing your experience! We’re so happy to hear the program felt smooth and helped reduce cravings, that’s such a big win.
It’s great that you’re planning to cycle it throughout the year, and we’re here to support you every step of the way!
I had my 5-Day Prolon shipped to a…
I had my 5-Day Prolon shipped to a delivery point because I’ve had packages stolen from my doorstep at my previous apartment.
Since I travel for work I thought I could get it the week I came home from my trip but I immediately faced a family emergency. Time went by quick and my shipment was returned to Prolon.
I reached out to Prolon’s customer service through email and told them of my dilemma and Yessica replied immediately, issued a case number and asked if I would like a replacement or refund. It was quick, painless and easy because I had Onward Protection.
I have had such great results (10-15lbs each time) that I asked for a replacement. Immediately I had an email from Onward saying the shipment is on the way. I am grateful to Prolon and their customer service team for their human interaction and empathy.
10/10 would recommend.
13 April 2026
Unprompted review
Reply from Prolonlife
Hi Popo,
Thank you so much for taking the time to share your experience, it truly means a lot to us.
We’re very sorry to hear about the family emergency you went through, and we’re really glad our team, especially Yessica, was able to support you quickly and make the process as smooth as possible during such a stressful time. Providing that level of care and empathy is something we deeply value.
We’re also so happy to hear that Onward Protection helped make the replacement process quick and seamless, and even more so that you’ve been seeing such great results with the program, that’s incredibly rewarding to hear.
Thank you again for your trust and for your kind recommendation. Please don’t hesitate to reach out if there’s ever anything more, we can do to support you. We’re always here for you.
Mixed results with good progress
I had a bit of a rollercoaster experience. On the positive side, the results were impressive. I lost 4lbs in the 5 day program. However, the side effects were a challenge. I had severe headaches and nausea, with data one and three being particularly difficult. I also struggle with the fish (omega) capsules; the fishy burps and aftertaste were very unpleasant. Given the high price point and the physical intensity of the experience, I don’t see this being sustainable as a regular routine.
13 April 2026
Reply from Prolonlife
Hi Peggy,
Thank you so much for taking the time to share your experience, we truly appreciate your honesty and the effort it took to complete the program.
We’re really glad to hear that you saw meaningful results, including the weight loss over the 5 days, that’s a great outcome.
At the same time, we’re very sorry to hear that the experience felt like a rollercoaster and that symptoms like headaches, nausea, and difficulty with the omega capsules made it challenging.
Headaches and nausea can occur for some individuals during fasting, especially in the first few cycles, as the body transitions metabolically. This can be related to factors like hydration levels, electrolyte shifts, caffeine changes, and the body adapting to a lower caloric intake. Many people find that these symptoms improve in subsequent rounds as the body becomes more accustomed to the process.
Regarding the omega capsules, we completely understand how unpleasant the aftertaste and “fishy burps” can be. Some customers find it helpful to take them with meals, refrigerate them, or take them later in the day to minimize this effect but we recognize that this can still be a barrier for some.
We also hear your concern around sustainability and cost, and we truly value that perspective. Feedback like yours is incredibly important to us as we continue working to improve both the experience and accessibility of the program.
If you feel that we can do anything further for you, we’d be more than happy to support you. Please, don't hesitate to reach out to customerservice@l-nutra.com.
Your feedback is incredibly valuable, and we’ve shared it with our team as we continue to improve.
Thank you again for giving Prolon a try and for sharing your thoughtful insights.
We’re here to support you if you ever decide to explore it again in a way that feels better aligned for you.
Customer service
13 April 2026
Reply from Prolonlife
Hi Andrea,
Thank you so much for your feedback! We’re so happy to hear you had a positive experience with our customer service team.
Supporting you is always our priority. Please don't hesitate to reach out if you have any questions at some point, we are here to support you.
Great product!
This is round 2 for me. I get the Next Gen package, and the food is tasty. Also, the support that Prolon offers - the daily live webinars, and the email you can use to get questions answered realtime, is most appreciated. My inflammation is down, and I've even lost a few pounds. I'm doing round 3 next month.
13 April 2026
Reply from Prolonlife
Hi Judi,
Thank you so much for sharing your experience, we truly appreciate you taking the time to do so!
We’re so glad to hear that you’re enjoying the Next Gen program and finding the meals tasty, that makes such a difference during the 5 days. It’s also wonderful to know that the live webinars and support team have been helpful along the way. Having that real-time guidance can really enhance the experience.
It’s amazing to hear that you’ve noticed improvements in inflammation and some weight loss as well, those are meaningful outcomes. If you continue with your next rounds, you may also benefit from the structure of the Prolon Guided Program, which is designed to support ongoing progress with additional guidance and accountability.
We love that you’re already planning your third round, that consistency can be very powerful.
We’re here to support you every step of the way, and we’re excited for you as you
These are great resets for busy…
These are great resets for busy lifestyles. It’s a simple and straightforward way to fast. I would say it’s important to consult a doctor before fasting. Especially if you have never fasted and may have health problems. But, I have always found this product to be high quality and helpful when I need a reset.
13 January 2026
Reply from Prolonlife
Hi Amy,
Thank you so much for sharing your experience, we really appreciate your thoughtful perspective.
We’re so glad to hear that Prolon has been a helpful and convenient reset for your busy lifestyle. You’re absolutely right that checking in with a healthcare provider is an important step, especially for those new to fasting.
It means a lot to hear that you’ve found the program high quality and supportive when you need it most. We’re here for you anytime you’re ready for your next reset!
EASY TO USE AND STAY ON TRACK.
8 April 2026
Reply from Prolonlife
Hi Connie,
Thank you so much for your feedback, we love to hear about your experience.
We’re so happy to hear that you found the program easy to use and helpful for staying on track, that’s exactly what we aim to provide.
We’re here to support you every step of the way!
Thank you for the on time delivery of L-Nutra 5 day nutrition
Thank you for the on time delivery of this wonderful opportunity to maintain my health. I am on day 2 of L-Nutra and looking forward to today's mushroom soup - I've not had it before and love mushrooms.
9 April 2026
Reply from Prolonlife
Hi Patricia,
Your feedback is extremely important to us,
We’re so glad your order arrived on time and that you’re enjoying your experience so far. The mushroom soup is a favorite for many. We hope you love it!
Wishing you a smooth and enjoyable rest of your program, and we’re here if you need anything along the way.
Reply from Prolonlife
Hi Logan,
Thank you for taking the time to share your experience. We truly value your feedback and are very sorry for the inconvenience and frustration this has caused.
Our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to help look into this further and work toward a resolution as quickly as possible.
We also wanted to share that, in general, orders typically arrive within 5–10 business days once placed. For shipments going to Hawaii or Alaska, delivery can take up to 3–4 weeks. We do offer an expedited shipping option (UPS 3-business-day shipping plus 1 day processing), though this does not apply to Hawaii or Alaska.
That said, this timing clearly doesn’t align with your experience, and we completely understand your concern. Please rest assured that we are actively working to clarify what may have happened and make this right for you.
Your satisfaction is very important to us, and we’re committed to ensuring you receive the support you need. We look forward to your reply and the opportunity to resolve this for you as soon as possible.
No issues thanks
10 April 2026
Reply from Prolonlife
Hi Georgia,
Thank you for your feedback, we appreciate you taking the time to share.
If there’s ever anything we can do to improve your experience or support you further, please don’t hesitate to reach out. We’re always here to help.
Always a positive experience with…
Always a positive experience with customer service. Product works!
10 April 2026
Reply from Prolonlife
Hi Danmon,
Thank you so much for your kind words!
We’re thrilled to hear that you’ve had consistently positive experiences with both the product and our customer service, that truly means a lot to us.
We’re here to support you anytime!
Easy ordering process.
10 April 2026
Reply from Prolonlife
Thank you so much for your feedback, Laura!
We’re glad to hear that the ordering process was smooth and easy, that’s exactly what we strive for.
We appreciate your support and are here whenever you need us!
The chocolate longevity shake is a…
The chocolate longevity shake is a great way to start my day. It keeps me going until noon.
10 April 2026
Reply from Prolonlife
Hi Marybeth
Thank you so much for sharing this! We’re so happy to hear that the chocolate longevity shake has become a great start to your day and helps keep you satisfied through the morning.
We truly appreciate your support and love having you as part of the Prolon community!
Please don't hesitate to reach out if you have any further questions. We are here for you.
Excellent coaching- love research talks
Excellent coaching- love her morning start with new research. Very respectful to all, lots of patience regarding repeated questions.
10 April 2026
Reply from Prolonlife
Hi Nancy,
Thank you so much for your kind feedback!
We’re so glad to hear you’re enjoying the coaching sessions and research discussions, it’s wonderful to know that the support feels thoughtful and helpful.
We truly appreciate you being part of the experience and are here for you every step of the way!
Dislike that they didn't sent me an…
Dislike that they didn't sent me an email ahead of time before the new shipment, so I could decide if I wanted to change the date, Skip it or cancelled the order. I want to be able to decide before the shipment. I am out of the country and can't receive the package.
10 April 2026
Reply from Prolonlife
Hi Vince,
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 this caused, especially given that you were out of the country and unable to receive your package. We completely understand how important it is to have control over your shipment timing.
We also wanted to clarify that, according to our system, an email notification was sent to the email address on file approximately 4 days before the order was processed, to provide the opportunity to manage, reschedule, skip, or cancel the shipment. That said, we understand that emails can sometimes be missed or not received, and we truly appreciate you bringing this to our attention.
Therefore, our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to help address your concerns and work toward a resolution.
Your satisfaction is very important to us, and we are dedicated to making your experience as smooth and flexible as possible moving forward.
We look forward to your response and the opportunity to support you further.
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