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.
You keep charging my bank account for…
You keep charging my bank account for products I have'nt ordered and a subscription I never authorized. furthermore I can not reach a human being to talk to when I try to contact you.
April 7, 2026
Reply from Prolonlife
Hi Fernando,
Thank you for taking the time to share your experience. We truly value your feedback and sincerely apologize for the frustration this situation has caused.
Our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to help review your account and address your concerns regarding the subscription and charges.
We understand how important it is to be able to quickly connect with support, and we are committed to working with you to clarify what happened and find the best possible resolution.
Your satisfaction is very important to us, and we look forward to hearing back from you so we can assist further.
Reply from Prolonlife
Hi Michael,
Thank you for taking the time to share your feedback! We’re so glad to hear that you found the ordering process easy and that the communication around your delivery was helpful.
Providing a smooth ordering experience and keeping our customers informed every step of the way is very important to us, so we truly appreciate you sharing your experience.
Thank you again for being part of the Prolon community.
affordable & effective
April 6, 2026
Reply from Prolonlife
Hi Mike,
Thank you for taking the time to share your feedback! We’re so glad to hear that you found the program both affordable and effective.
Our goal is always to provide a program that supports your health journey in a way that is both accessible and meaningful, so it’s wonderful to know that it has been a positive experience for you.
We truly appreciate you being part of the Prolon community and sharing your thoughts with others.
Choc L-shake is what I need to stay on…
Choc L-shake is what I need to stay on track. Wasn't sure I'd like it since it contains stevia, but it is delicious and very creamy. Thankfully I don't taste the stevia. I dilute it with more water, ice or some coconut milk to make it go further. The price per shake is about what I'd pay for my yogurt and fruit, so I'm ok with price, especially with discount code from my coach.
April 6, 2026
Reply from Prolonlife
Hi Susan,
Thank you so much for sharing your experience with the Choc L-Shake! We’re delighted to hear that it has been helping you stay on track and that you’ve been enjoying the taste and creamy texture.
It’s great to know that even though you were initially unsure about the stevia, the flavor worked well for you. Many customers also enjoy preparing it the way you described, adding extra water, ice, or coconut milk, to create a texture and serving size that fits their preferences.
We truly appreciate you taking the time to share your feedback, and we’re glad the L-Shake has become a helpful part of your routine. Thank you for being part of the Prolon community!
Love their products
The webpage is very easy to use. I love Prolon products I have done the 5 days fasting twice and love the L shake for breakfast.
April 6, 2026
Reply from Prolonlife
Hi Luli,
Thank you so much for taking the time to share your experience with us. We’re so glad to hear that you found the website easy to use and that you’ve been enjoying your experience with Prolon.
Congratulations on completing the 5-Day Fasting Mimicking Diet twice, that’s a wonderful commitment to your health. It’s also great to hear that you enjoy the L-Shake for breakfast. Many customers appreciate how convenient and satisfying it can be.
We truly appreciate your support and are grateful to have you as part of the Prolon community.
Successful phone, but …
Successful phone call to change the menu within my order of the 5 Day FMD. It would have been easier if I had been able to make this change online.
April 6, 2026
Reply from Prolonlife
Hi Rex,
Thank you for taking the time to share your experience. We’re glad to hear that our team was able to assist you successfully over the phone with updating the menu in your 5-Day FMD order.
We also truly appreciate your feedback regarding the ability to make these changes online. Insights like yours help us continue improving the overall experience for our customers, and we will be sure to share this suggestion with our team.
Thank you again for being part of the Prolon community, and please don’t hesitate to reach out if there’s anything else we can assist you with.
Expedited Shipping is a joke
Expedited Shipping is a joke! 2-3 day delivery ?
Ordered on the 3rd, processed on the 6th and scheduled delivery on the 9th. You do the math! Date of Experience 04/03/2026 paid for "Expedited Shipping"
April 6, 2026
Reply from Prolonlife
Hi Eric,
Thank you for taking the time to share your experience. We truly value your feedback and are sorry to hear about the frustration regarding the expedited shipping timeline.
Our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to review the details of your order, clarify the shipping timeline, and help address your concerns.
Your satisfaction is very important to us, and we are committed to making your experience as smooth and positive as possible. We look forward to connecting with you and working toward a resolution.
I am truly thankful for the nutritional…
I am truly thankful for the nutritional quality of the products I have to choose from Prolonlife!
I have finally found the healthiest qulity products to choose from!
Prolonlife has been just right for me.
At the time I was diligently searching for them.
I hope to remain a customer and I hope these quality healthy & nutritional producucts continue as well!😊
A. H. 😊
April 4, 2026
Reply from Prolonlife
Hi Ann,
Thank you so much for sharing your thoughtful feedback. We are truly grateful to hear that you value the nutritional quality of our products and that Prolon has helped you find options that align with the healthy choices you were searching for.
It means a great deal to us to know that our products are supporting you on your wellness journey. Our team is deeply committed to maintaining the quality and scientific integrity of our formulations, and any changes we make are always aimed at continuing to improve the experience and nutritional value for our customers.
We sincerely appreciate your trust and hope to continue supporting you for many years to come.
I am traveling on Thursday 4/9 and…
I am traveling on Thursday 4/9 and wanted my product before I left.
I paid the expedited shipping fee but 4/10 is not fast.
Disappointing.
April 6, 2026
Reply from Prolonlife
Hi Janet,
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’re sorry for any concern regarding the delivery timing and sincerely apologize for any inconvenience or frustration this may have caused.
According to our records, the order was placed on Sunday and shipped the next business day on Monday. The package is currently scheduled for delivery within the 3-business-day transit window provided by UPS, which falls within the estimated timeframe for the selected shipping method.
However, because your satisfaction is our top priority. Our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to help clarify the details 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 truly understand how important timely delivery is and appreciate your patience.
We look forward to your response and the opportunity to support you further. Please feel free to reach out to our support team if there’s anything else we can assist with. We’re always happy to help.
My 5th Time of The 5 day Fasting
This is my 5th five day fasting in the past year. Your variety flavors are amazing.
You need to sell the L Drink as a single item, please.
April 3, 2026
Reply from Prolonlife
Hi Terez,
Thank you so much for sharing your experience, and congratulations on completing your fifth Prolon cycle this past year! Your commitment to your health journey is truly inspiring.
We’re also very glad to hear that you’re enjoying the variety of flavors included in the program. Our team puts a lot of care into developing products that support the fasting process while still being enjoyable.
Thank you as well for your suggestion regarding the L-Drink. We truly appreciate feedback like this, and I will be happy to share your comment with our team as we are always looking for ways to improve and expand our offerings.
Thank you again for being part of the Prolon community.
Reply from Prolonlife
Hi Andrew,
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 frustration you experienced. Our goal is always to provide clear information and a positive experience for our customers, and we appreciate you bringing your concerns to our attention.
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 haven't even used the prior shipment…
I haven't even used the prior shipment of ProLon and you've already sent the next one. Please cancel suscriptions.
April 3, 2026
Reply from Prolonlife
Hi Walter,
Thank you for taking the time to share your experience. We truly value your feedback and are sorry to hear about the frustration this situation caused.
Our Customer Service Team has already reached out to you directly via email from customerservice@l-nutra.com to help address your request and assist with cancelling the subscription.
Your satisfaction is very important to us, and we are committed to making your experience as smooth and positive as possible. We look forward to connecting with you and helping resolve this for you.
Great 5 day near fasting experience times 2!
The product prevents hunger and gives me a sense of well-being. I think the product tastes good, despite other's reviews.
April 3, 2026
Reply from Prolonlife
Hi Laura,
Thank you for taking the time to share your experience! We’re so glad to hear that the products helped support your fast by keeping hunger manageable and contributing to your overall sense of well-being.
It’s also wonderful to hear that you enjoyed the taste of the products. We know taste can be a very personal experience, so we truly appreciate you sharing your perspective.
Thank you again for being part of the Prolon community and for sharing your feedback with others.
Everyone was so helpful
Everyone was so helpful, i needed to edit my order and you guys were so helpful coming up with a solution, thanks again
June 23, 2025
Reply from Prolonlife
Hi Patricia,
Thank you so much for taking the time to share your experience! We’re very glad to hear that our team was able to assist you in updating your order and finding a solution that worked for you.
Providing helpful and flexible support is very important to us, so it’s wonderful to know that your experience reflected that.
We truly appreciate your kind words and thank you for being part of the Prolon community.
Always an A+ Experience
I've been ordering from Prolon for a few years now, and my experiences have always been very positive. I recently had a slight shipping issue with a relatively small package (just fasting bars), and the customer service (shout-out to David) was stellar. Went out of his way to help, with very detailed, helpful info. You get the feeling that this company truly does have your back!
March 31, 2026
Unprompted review
Reply from Prolonlife
Hi Matthew,
Thank you so much for taking the time to share your experience and for being part of the Prolon community for the past few years. We truly appreciate your continued trust and support.
We’re especially glad to hear that David was able to assist you and turn the shipping issue into a positive experience. We’ve shared your kind words with him, and it means a lot to our team to know their efforts are making a difference.
Our goal is always to support our customers every step of the way, so it’s wonderful to hear that you feel that level of care from our team.
Thank you again for your thoughtful feedback, and we look forward to continuing to support you on your health journey.
Let’s of trouble ordering
I still haven’t tried the product yet, but purchasing the product was definitely an issue. The website is not very good. It seems to be glitchy and trying to use the chat is not easy at all.
Once I did finally reach someone to answer my questions I did feel like it was knowledgeable and helpful. Unfortunate the website is a serious problem and it does discourage me from trying to get anything done.
Also, I ordered the subscription since it was recommended to do it once every three months. I got charged the shipping fee, even though I was not supposed to get charged a shipping fee due to doing the subscription. Now I’m having a hard time getting back to customer service to get the refund as they told me I would get the refund, but I still have not gotten any notification about it. Overall purchasing experience has been difficult and it’s making me consider not continuing this subscription as this has not been good.
April 2, 2026
Reply from Prolonlife
Hi Ana,
Thank you for taking the time to share such thoughtful feedback. We truly appreciate you bringing this to our attention.
First, we’re very glad to hear that when you were able to connect with our team, you found the support knowledgeable and helpful. Providing clear guidance and support is very important to us, so it’s encouraging to know that part of your experience met your expectations.
At the same time, we’re very sorry to hear that navigating the website and reaching customer support felt frustrating. That is certainly not the experience we want for anyone exploring or beginning their journey with ProLon. Your comments about the website and chat functionality are extremely valuable, and we will be sharing this feedback with our internal team so it can be reviewed and improved.
Regarding the shipping charge, we completely understand how confusing that must feel, especially when you were expecting the subscription to include free shipping. Our Customer Service Team would be more than happy to review your order and ensure the situation is properly resolved. If the refund was already initiated, it may simply still be processing through your bank, but we would be glad to double-check this for you.
Please feel free to reach out directly to our team at customerservice@l-nutra.com or by phone at +1 (888) 926-5370, and we will make sure this is looked into promptly. Your experience matters to us, and we want to ensure everything is handled smoothly.
We truly appreciate you giving ProLon a try and hope your experience with the program itself will be a positive one once you begin. In the meantime, we’re here to help with anything you need.
Prolon’s products are backed with…
Prolon’s products are backed with science!!! This company is very reliable!!!
👍👏👏😁🤩
April 2, 2026
Reply from Prolonlife
Hi Patti,
Thank you so much for your kind words! We’re truly grateful for your trust and support.
Our team is deeply committed to grounding our products in scientific research, and it means a lot to hear that this dedication resonates with you. We appreciate you taking the time to share your experience with our community.
Prolon Fasting bars are delicious and I…
Prolon Fasting bars are delicious and I love them and truly believe they help curve my hunger which is crucial when fasting.
March 9, 2026
Reply from Prolonlife
Hi Monica,
Thank you for sharing your experience! We’re so glad to hear that you’re enjoying the Prolon Fasting Bars and that they’ve helped manage hunger during your fasting routine.
It’s wonderful to know they’re supporting you along the way. We truly appreciate you taking the time to share your feedback with our community.
I always feel better when I speak to a LIVE person in customer service!
I always feel better when I speak to a LIVE person in customer service! I was having trouble logging into my account to take advantage of their 20% sale. Upset that it was over I called. After speaking to Manuel, in customer service and who graciously gave me the 20% PROMO, I ended up ordering the products I needed to continue on my journey to getting healthy and updated my subscription for the 5 day fast kit. I really love the system. It wasn't always working and that's why I ordered their shakes and bars to help me continue the fasting process. Keep up the good work PROLON!!
March 31, 2026
Reply from Prolonlife
Hi Jo,
Thank you so much for taking the time to share your experience! We’re really glad to hear that our team member Manuel was able to assist you and help resolve the issue with your account so you could take advantage of the promotion. We passed along your kind words to him, and it truly made his day.
We truly appreciate your comments about speaking with a live member of our customer service team. Providing personalized support is very important to us, and it’s wonderful to know Manuel was able to make your experience a positive one.
We’re also happy to hear that you were able to update your subscription and continue with the products that support your fasting routine. Thank you for being part of the Prolon community and for your continued trust in our program.
Wishing you continued success on your health journey!
I don't care for the checkout process…
I don't care for the checkout process at all. All I did was click on the free shipping tab to see if it applied to my order and it placed the order without being able to review it so therefore added the 4.95 protection fee which I never would have added. I gave 5 starts as customer service waived the shipping and protection fee as a courtesy.
April 2, 2026
Reply from Prolonlife
Hi Angela,
Thank you for taking the time to share your feedback. We truly appreciate you bringing this to our attention.
We’re sorry to hear that the checkout process felt confusing and that the order was placed before you had the chance to review it. Your experience is important to us, and feedback like yours helps our team continue improving the process for our customers.
We’re glad to hear that our customer service team was able to assist and resolve the situation for you. It means a lot that you took the time to recognize their support.
Thank you again for sharing your experience and for being part of the Prolon community.
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.