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
Company replied
While we don't verify specific claims because reviewers' opinions are their own, we may label reviews as "Verified" when we can confirm a business interaction took place. Read more
To protect platform integrity, every review on our platform—verified or not—is screened by our 24/7 automated software. This technology is designed to identify and remove content that breaches our guidelines, including reviews that are not based on a genuine experience. We recognise we may not catch everything, and you can flag anything you think we may have missed. Read more
Review summary
Created with AI, based on recent reviews
What people talk about most
Reviews shaping this summary
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
Company replied
4.1
Great
10K reviews
At Trustpilot, it's all about human content. This business can also access our AI-assisted response tool which helps them draft replies.
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Discounts
I have used your products before and was looking for a good price. I found the 5 day for20% off. The next day after ordering I received a message with a 25% off. This seems that it could discourage people from ordering
13 March 2026
Reply from Prolonlife
Hi Christine,
Thank you for sharing your feedback, I completely understand how that experience could feel discouraging, and I really appreciate you bringing it to our attention.
From time to time, we do offer different promotions as part of ongoing efforts to make the program more accessible, and these offers can vary in timing. That said, I understand how receiving a higher discount shortly after placing your order may feel frustrating.
Please know that your feedback is incredibly valuable, and I will be sure to share it with our team as we continue working to improve the overall customer experience.
If there’s anything else I can support you with, please don’t hesitate to reach out. We’re here to help.
Reply from Prolonlife
Hi David,
Thank you so much for your kind words! We’re truly glad to hear you had a great experience with our team. We would be passing the amazing feedback on to them. Providing excellent support is always our priority, and it means a lot to know it made a difference for you. If you ever need anything, we’re always here to help!
Super easy to order
13 March 2026
Reply from Prolonlife
Hi Katie,
Thank you so much for your feedback! We’re really glad to hear that your ordering experience was smooth and easy, that’s exactly what we aim for. If there’s ever anything we can do to make your experience even better, we’re always here to help.
Please, don't ever hesitate to reach out if you have any further questions. We are here for you.
The website says the order is "ship…
The website says the order is "ship ready." Why then does it take 2 days to ship? I keep getting post-purchase confirmation emails but no "we've shipped it" emails. I would think at $200/order plus shipping, there's enough margin in there to get all orders in less than 1 day into USPS priority mail.
12 March 2026
Reply from Prolonlife
Hi Ally,
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 situation must have caused you.
To better understand how we can support you and enhance your experience. 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.
HORRIBLE WEB SITE
12 March 2026
Reply from Prolonlife
Hi Mark,
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 difficulties you may have encountered while navigating our website. We truly appreciate you bringing this to our attention, as feedback like yours helps us identify areas where we can continue improving the experience for our customers.
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.
The weight that I lost during my 5 day…
The weight that I lost during my 5 day Prolon FMD fell off and hasn't returned. I've tried numerous diets, the weight always comes back. I was suffering from back pains, in addition to the weight loss, the back pain has also minimized. Prolon taught me that we don't need to eat all the foods we eat and as much as we eat it.
12 March 2026
Reply from Prolonlife
Hi Ally,
Thank you so much for sharing your experience with Prolon. We’re truly happy to hear that the 5-Day FMD helped support both your weight loss and a reduction in back pain.
It’s especially meaningful to hear that the results have been lasting, as many people share similar frustrations with weight returning after other diets.
One of the goals of the program is not only to support metabolic health during the fast but also to help people develop a new perspective on eating habits and portion awareness afterward.
It’s wonderful to hear that the experience helped you discover that you may not need as much food as you once thought.
We truly appreciate you taking the time to share your story, and we’re grateful to have you as part of the Prolon community. Please don’t hesitate to reach out if there is ever anything we can support you with along your journey.
Free shipping $200 even on subscription items
Logging in to place an order is frustrating with the Shop popups. I placed 2 orders on the same day then asked Customer Service to apply free shipping since the total was over $200. Rather than crediting the shipping fee to my account they offered to cancel & reorder which didn’t end up working. Too many back & forths.
11 March 2026
Reply from Prolonlife
Hi Rebecca,
Thank you for taking the time to share your experience. We’re sorry to hear that navigating the website and placing your order felt frustrating, and we truly appreciate you bringing this to our attention.
Your feedback regarding the Shop pop-ups and the ordering experience has been noted and shared with our team, as we are continuously working to improve the website and make the process as smooth as possible for our customers.
We’re sorry for the inconvenience caused during the process of resolving the shipping fee. Our Customer Service team worked to find a solution and, as part of that effort, offered a resolution that included a special accommodation for your order.
Please know that your feedback is extremely valuable to us, and it helps us identify areas where we can improve both the website experience and our support processes.
If there is anything further we can assist you with, we would be more than happy to help.
I love Prolon and do it periodically
I love Prolon and do it periodically. I always feel great afterwards. I also love the organic version. It's more expensive, but I really like the quality and tastes. Please keep up the great work!
2 March 2026
Reply from Prolonlife
Hi Mizue,
Thank you so much for your kind words and for continuing to include Prolon as part of your wellness routine. We're delighted to hear that you consistently feel great after completing the program and that you've been enjoying the Organic version as well.
We truly appreciate your support and are grateful that you value the quality and taste of our products. Feedback like yours motivates our team to keep improving and delivering the best possible experience.
Thank you again for being part of the Prolon community!
Reply from Prolonlife
Hi Marybeth,
Thank you so much for sharing your experience! We’re happy to hear that the program was easy to follow and that you found a product that works for you.
Your feedback means a lot to us, and we’re excited to continue supporting you on your wellness journey!
Please, don't ever hesitate to reach out if you have any questions. We are here for you.
Great Customer Service.
Customer Service has been most helpful and prompt in dealing with our requests.
We are long time users of Prolon and find the results to be exceptional.
9 March 2026
Reply from Prolonlife
Hi Anne,
Thank you so much for your kind words and for taking the time to share your experience. We’re delighted to hear that our customer service team has been helpful and responsive in supporting your requests.
It also means a great deal to us to have long-time users like you in our community.
We’re excited that you continue to find the results exceptional and truly appreciate your continued trust in Prolon.
Please, don't ever hesitate to reach out if you have any questions. We are here for you.
I canceled my order on Friday before it…
I canceled my order on Friday before it was due to ship. Why did it still get shipped.
9 March 2026
Reply from Prolonlife
Hi Heike,
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 situation may have caused.
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.
I just finished my third ProLon Fast…
I just finished my third ProLon Fast and ordered 2 more. I lose about 5 pounds each time and keep it off and all seems to be belly fat - which is where I needed.
9 March 2026
Reply from Prolonlife
Hi Elizabeth,
Thank you so much for sharing your experience with us! We’re happy to hear that you’ve completed three Prolon cycles and are continuing your journey. It’s wonderful that you’ve seen such consistent results and feel good about the progress you’re making.
We truly appreciate you taking the time to share your feedback, and we’re honored to support you along the way.
Wishing you continued success with your next rounds!
More energy, feeling revitalized.
Ease of ordering and I like the different choices available now.
This product is SO great. After just a 1 day reset I feel back in control and cravings go away.
I've only done the 5 day ones and lost 10 lbs. I've never regained it again.
9 March 2026
Reply from Prolonlife
Hi Maria,
Thank you so much for sharing your experience! We’re excited to hear that the ordering process was easy and that you’re enjoying the expanded variety of options available.
It’s also wonderful to know that the program has helped you feel back in control and manage cravings so effectively.
Congratulations on your results with the 5-Day Fast as well, that’s fantastic to hear! We’re so grateful to be part of your wellness journey and truly appreciate you taking the time to share your feedback with our community.
5 Day Plan is a Good Start
Food was OK and it kept me full
I have used other methods that got me back to whole foods only which to me is the only way to go.
hunt or grow it - EAT IT
Comes in a bag or a box - DO NOT EAT IT
4 March 2026
Reply from Prolonlife
Hi Jim,
Thank you for sharing your feedback. We’re glad to hear that Prolon helped keep you full during your fast.
We completely understand and respect your perspective on returning to whole, unprocessed foods. “hunt or grow it” is certainly a lifestyle many people aim for, and integrating whole foods after fasting is a key part of the journey.
It’s great that you’re listening to your body and choosing what works best for you. If you ever want guidance on transitioning from the fast back to whole foods or optimizing your next Prolon cycle, we’re here to support you.
Tricking people into a subscription model
I’m extremely disappointed to see a $215 charge and a “delivery on the way” notification for something I never intended to subscribe to. Tricking customers into a subscription that’s difficult to identify or cancel is one of the lowest forms of product sales, and it’s frustrating to realize this happened after what I thought was a one‑time purchase in December during the holidays.
I did not knowingly agree to these recurring charges, and this experience has completely undermined my trust in your company. I won’t be using your products again and will be discouraging others from engaging with a model that relies on this kind of misleading enrollment.
Please cancel this subscription immediately.
9 March 2026
Reply from Prolonlife
Hi Alexandra,
Thank you so much for your feedback. We completely understand how unexpected charges and subscription notifications can be frustrating, and we sincerely acknowledge your experience.
We’re happy to have had the opportunity to reach out to you from our Customer Service team (customerservice@l-nutra.com) to offer a resolution tailored to your situation. Our goal is always to address concerns promptly and ensure your satisfaction with our support.
Please know that we’re here to help and answer any further questions you may have regarding your account or subscription.
Prolon's products satisfy the body…
Prolon's products satisfy the body sufficiently; therefore, I am a repeat customer.
21 January 2026
Reply from Prolonlife
Hi Arthur,
Thank you for sharing this with us. We’re so glad to hear that Prolon satisfies your body and that you’ve chosen to come back to the program. It means a lot to know that the experience has supported you enough to make you a repeat customer.
If you ever have any questions or would like guidance while preparing for your next Prolon 5-Day Fast Mimicking Diet, please don’t hesitate to reach out to us at customerservice@l-nutra.com. We’re always happy to support you.
Multiple order of the 5 day and no…
Multiple order of the 5 day and no spread I the order which I ordered
4 March 2026
Reply from Prolonlife
Hi Chrissy,
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 situation might have caused, and as we care to be able to enhance your experience.
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.
Reply from Prolonlife
Hi Heather,
Thank you for taking the time to share your feedback. We’re so glad to hear that you had a great experience with our customer service team and that the support you received was helpful.
Providing clear guidance and making sure you feel supported throughout your experience is very important to us, so your kind words truly mean a lot.
If you ever have any additional questions or need assistance in the future, please don’t hesitate to reach out. We’re always happy to help
Didn’t like the assumed pre chosen…
Didn’t like the assumed pre chosen insurance. The choices are wonky via phone and slightly confusing. I have used the product and do believe in the benefits.
4 March 2026
Reply from Prolonlife
Hi Brad,
Thank you for sharing your feedback with us. We truly appreciate you taking the time to let us know about your experience.
We’re sorry to hear that the pre-selected insurance option and the choices presented during checkout felt confusing. We understand how important it is for the ordering process to be clear and straightforward, and we appreciate you bringing this to our attention.
Your feedback will be shared with our team as we continue working to improve the checkout experience.
There are multiple options available during checkout to allow customers to customize their order, including the ability to remove or modify certain selections if they prefer.
One of these options is the Onward shipping protection service, which we highly recommend because it provides several additional benefits designed to give customers more peace of mind with their purchase.
These benefits include earning 10% cashback in store credit to use on future purchases, a satisfaction guarantee that allows issues related to product quality within 90 days to be addressed, protection against shipping issues such as theft, loss, or damage, carbon-neutral shipping to offset the CO₂ emissions from the shipment, and priority customer support for faster assistance if needed.
While this option is entirely optional, many customers find it helpful as an added layer of protection and convenience.
We’re also grateful to hear that you’ve used the product and believe in its benefits. It means a great deal to us that you trust the program and the science behind it.
If you ever have questions while placing an order or would like assistance reviewing the available options, please don’t hesitate to reach out. Our team is always happy to help make the process as smooth as possible.
Thank you again for your thoughtful feedback and for being part of the Prolon community.
I've been trying to buy Prolon for over…
I've been trying to buy Prolon for over two weeks, but the website keeps kicking me out. I also tried getting help via chat and sent messages, but no one responded. I hope the product is worth the time I've waited to get it.
6 March 2026
Reply from Prolonlife
Hi Yanira,
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 this situation must have caused you. Know that we are here to ensure your experience is the best we can make it.
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.
The Trustpilot Experience
Anyone can write a Trustpilot review. People who write reviews have ownership to edit or delete them at any time, and they’ll be displayed as long as an account is active.
Companies can ask for reviews via automatic invitations. Labeled Verified, they’re about genuine experiences.
Learn more about other kinds of reviews.
We use dedicated people and clever technology to safeguard our platform. Find out how we combat fake reviews.
Learn about Trustpilot’s review process.
Here are 8 tips for writing great reviews.
Verification can help ensure real people are writing the reviews you read on Trustpilot.
Offering incentives for reviews or asking for them selectively can bias the TrustScore, which goes against our guidelines.