Many customers say the five-day meal program delivers clear personal benefits, including sharper mental clarity and fewer cravings. Packaged items such as bars, crackers, and soups often get praise for taste and convenience. A separate set of complaints focuses on billing mistakes, surprise charges, and trouble cancelling subscriptions. Shipping fees and delays on expedited orders also drive negative reviews.
Examples from available reviews (Apr 2022 – Mar 2026).
Multiple purchases and reported improvements in metabolic health.
“I am seeing a reversal in metabolic issues”
Finds kale crackers and soups tasty and praises prompt customer service.
“The kale crackers and various soups are very good”
Was charged for three kits and could not get refund or live support.
“Prolon charged me for 3 kits instead of just the 1 kit I wanted.”
They cancelled a subscription but continued to receive shipments despite cancellation.
“I cancelled my subscription they keep sending it!!!!”
Billing and fulfillment mistakes show up repeatedly in service complaints. Several reviewers say they were charged for multiple kits, sent shipments they didn’t want, or couldn’t stop a subscription. Others describe helpful agents who moved quickly, sent replacements, or offered practical fixes.
Many reviews point to high shipping fees and the product price as the main value concerns. Some customers say promo discounts and occasional free shipping help balance the cost. A few reviewers single out soup taste or the price as disappointing.
Checkout and subscription steps often confuse customers, with repeated reports of being pushed into opt-ins. Users also mention a slow site, frequent log-outs, and trouble paying with FSA/HSA accounts. A smaller number of reviewers say the online process feels clear and easy.
Food items draw frequent praise, especially the bars, kale crackers, and the overall convenience of the meals. Several reviewers report metabolic or appetite improvements after completing the five-day program. A few comments mention getting bored late in the program and disliking some soups.
Multiple customers point to community support and expert Zoom calls as useful guidance. Others say onboarding emails never arrived and that live help is limited when issues come up. Several reviewers also highlight individual staff members for fast, clear, informative replies.
Reviews split strongly in overall tone. Many high ratings describe health gains and a smooth five-day experience. Low ratings focus on billing, subscription, and fulfillment problems that outweigh satisfaction with the product.
For each review, the core experience based on original source reviews.
Sources: Trustpilot (60) · Collected.reviews (1) · Quotes shortened · As of: March 2026
Using HSA payment was difficult but eventually went through.
“Using my hsa was a real chore”
Described interaction as helpful, informative, and cooperative.
“Helpful Informative Cooperative”
Product is too expensive for persons with limited incomes.
“The product is too expensive for persons with limited incomes.”
Results exceeded expectations without drugs or strict calorie counting.
“The results that I got were greater than my expectations.”
Was charged for three kits and could not get refund or live support.
“Prolon charged me for 3 kits instead of just the 1 kit I wanted.”
Uses Prolon twice yearly and enjoys bars, shakes, and chocolate spread.
“The bars are a healthy snack”
Learned about "reset" concept and it positively changed health perspective.
“I learned about the concept of "reset" from Prolon”
Enjoys the 5-day fast, never feels hungry and values health benefits.
“I never feel hungry throughout the 5-days”
Website is easy to use.
“Easy website”
Recurring orders have shipped reliably and product quality is high.
“I find the products to be of high quality”
Appreciates 30% discounts and free shipping for doing FMD.
“Always appreciate the 30% discounts & free shipping”
Charged more than expected and soups taste is disappointing.
“The soups aren’t great”
First experience was easier and tastier than expected with helpful coaching.
“It was easier and tastier than I expected.”
Praises consistent communication, responsiveness, and program contents.
“I appreciate the quality and quantity of communication from Prolon.”
Had a challenging but rewarding five-day FMD and plans to repeat.
“I just felt amazing.”
Reviewer praised the company's customer service.
“Great customer service”
Package arrived timely, directions were clear, and foods tasted good.
“Package arrived in a timely manner.”
Online shopping is confusing and promotion details are misleading for subscriptions.
“The online shopping experience is inconsistent and confusing.”
FMD reduced cravings and reset food preferences for months.
“It's a complete reset for my brain”
Customer service helped obtain correct soups and was excellent.
“Customer was amazing!”
I recently tried ProLon's Fasting Nutrition Program and I must say, it was a great experience! The 5-day meal kit was perfectly planned to provide my body with nourishment while keeping it in a fasting state. What impressed me the most is how easy and convenient it was to follow this program.
During the five days of fasting, I felt more energetic and focused than ever before. My digestive system felt much lighter, and I could already see some positive changes like weight loss, better metabolism function, cellular renewal, etc.
The meals provided were tasty and filling enough to curb hunger pangs throughout the day. Every single item contained high-quality ingredients that made me feel rejuvenated after every meal. Plus, each package came labeled with instructions that made things easier for me.
Overall, ProLon has done an excellent job of creating a product that truly delivers what it promises - healthy fasts without any compromises. Anyone looking for an effective nutrition program should definitely give ProLon a try!
This page combines submitted experiences with public reviews from platforms such as Google, Trustpilot, etc. Recurring points are summarized without changing the content of reviews.
ProLon sells a five-day meal kit based on a fasting-mimicking diet protocol. Each day comes in a box that usually includes bars, soups, crackers, and other packaged nutrition items. Customers buy kits through ProLon’s direct-to-consumer online store, either as one-time purchases or subscriptions. The company offers customer support and shares resources such as coached sessions and community groups to go with the program. ProLon operates in the clinical nutrition and wellness space and ships packaged meal kits to consumer addresses.