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Quantum Nutrition Labs Reviews

4.7 Rating 860 Reviews
91 %
of reviewers recommend Quantum Nutrition Labs
QN Labs has provided me with several top-quality products. The digestive enzymes and HCL are essential for good results with cooked foods. I really appreciate the information available from QNL. TJN
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Posted 2 years ago
Started listening to Dr. Bob Marshall when I was in my twenties. Miss him and his knowledge and his reasonable prices.
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Posted 10 hours ago
I have been loyally using your Kidney Support for years and my numbers have remained the same. I stopped ordering late in 2025 when the price went up to $47.00 a bottle, quite an increase. I did reorder recently when a 30% discount was offored although I only ordered 2 bottles. With deep discounts I will order again but not at $47.00 a bottle.
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Posted 11 hours ago
Excellent supplements, have my trust
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Posted 4 days ago
Thank you, Yolanda! That kind of trust is something we work hard to earn. We’re really glad the supplements have continued to meet your expectations.
Posted 4 days ago
I love this company and products!
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Posted 5 days ago
Thank you, Billie. We really appreciate the kind words and are glad the products have earned that level of trust from you.
Posted 4 days ago
Would love it if QNL gave quarterly or yearly discounts for loyal customers. Bob Marshall have reasonable prices for the suppliments but now the prices are very high. I don't purchase half of what I use to. Seems like QNL has gone downhill :(.
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Posted 6 days ago
Thank you for sharing your thoughts, Sheila. We understand how pricing changes can affect what people are able to purchase, and we appreciate you being honest about it. We do currently have a 30% off sitewide promotion with free shipping, which can be a great time to restock on the products you rely on. We truly value long-time customers like you and appreciate your continued support of QNL.
Posted 4 days ago
The best nutritional products on the market.
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Posted 1 week ago
Thank you, Ivan. That’s a strong statement and we don’t take it lightly! We appreciate your confidence in QNL and are glad the products continue to deliver for you.
Posted 4 days ago
I trust the quality of the products. I have an issue with products shipping on the same day but I’m not being invoiced on one invoice and have been charged double shipping.
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Posted 1 week ago
Thank you for bringing this up, Linda. We’re glad to hear you trust the quality of the products! Our customer service team has been made aware of the shipping concern and will be reaching out to you to look into it. We appreciate you letting us know.
Posted 4 days ago
Disappointing to place an order and then find 30% off and free shipping a week later!!
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Posted 1 week ago
Thank you for sharing that, Bernadette. We definitely understand how that timing can feel frustrating. Our promotions do rotate throughout the year, so hopefully the next one lines up a little better for you. We appreciate you choosing QNL and hope you enjoy the products from your recent order.
Posted 4 days ago
Highly recommend product
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Posted 2 weeks ago
Thank you, Susan. We really appreciate the recommendation and are glad the product has been a good fit for you.
Posted 4 days ago
Your products are the best and excelent service.
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Posted 2 weeks ago
Thank you, Ron. We’re glad the quality of the products stands out and that the service has been a good experience as well. We appreciate the support!
Posted 4 days ago
Need more practitioners in the Los Angeles area.
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Posted 2 weeks ago
Thank you for the suggestion, DiAnn. Expanding practitioner access in areas like Los Angeles is important, and feedback like this helps us see where there’s demand. We appreciate you taking the time to share it.
Posted 2 weeks ago
QNL's product quality is top tier, but I am incredibly alarmed at the price increases over the past five years, which seem exhorbitant and borderline criminal to say the least.
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Posted 2 weeks ago
We appreciate the honesty. We’re glad you still see the quality in QNL products. Pricing has risen over the past few years due to increased sourcing, manufacturing, and testing costs, and we’ve chosen to maintain our standards rather than lower quality. We value your feedback and your support.
Posted 2 weeks ago
Every product I've tried works very well
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Posted 2 weeks ago
Thank you, Maria. We love hearing that everything you’ve tried has delivered for you. That consistency is something we work hard to maintain across the entire line. We appreciate you being with QNL!
Posted 2 weeks ago
My absolute favorite supplement line! I love the fact that I can trust the purity and quality of all of their supplements. QNL standards are unmatched and deliver results that are on another level from the rest!
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Posted 1 month ago
Thank you, Nathan. That means a lot. Hearing that you trust the purity and feel the difference in the results is exactly what we aim for with every formula. We take our standards seriously, so it’s great to know that comes through. We appreciate you being part of QNL!
Posted 1 month ago
Great products for improved digestion in my older age!
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Posted 1 month ago
Thank you, John. It’s great to hear our digestive products have been supporting you as you get older. We appreciate you sharing your experience and choosing QNL.
Posted 1 month ago
I always get my order rapidly. Thank you
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Posted 1 month ago
Thank you, Mark. We’re glad everything has been arriving quickly and smoothly. We appreciate you taking the time to share that and choosing QNL.
Posted 1 month ago
Little disappointed in communication. I wanted to change my delivery date. And I was told to go online and change The date And when I did it automatically increased my HCL $20 more so I stopped before I change the other two.. I called up and the girl who does internet Said she couldn't do nothing about it... Hopefully you can fix that for me and put it back on my automated payment And delivery the way I had it.. Thanks George Greco....2016794935
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Posted 1 month ago
Your Quantum Reishi has made a huge difference in our health. Thank you for continuing to make it.
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Posted 1 month ago
Thank you, Sarah. It’s great to hear Quantum Reishi has made such a noticeable difference for your health. We’re glad it’s been a product you can count on and appreciate you taking the time to share your experience.
Posted 1 month ago
I love all your products--but without a sale--y'all have gotten expensive.
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Posted 1 month ago
Thank you for the honest feedback. We’re glad you love the products. The pricing reflects the quality of ingredients and testing we insist on, but we understand it can feel high without a sale. We appreciate your continued support and keeping an eye out for promotions!
Posted 1 month ago
20 years of using these products. Great!!
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Posted 1 month ago
Thank you, John. Twenty years of continued use says a lot, and we truly appreciate that kind of long-term trust. We’re glad the products have continued to serve you well!
Posted 1 month ago
Quantum Nutrition Labs is rated 4.7 based on 860 reviews