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Pros & Cons
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Energy Levels
Customers report significant improvements in their energy levels, mental clarity, and overall sense of well-being when taking this supplement. Some users have also noticed a reduction in inflammation and improved sleep quality.
Cognitive Function
Customers report significant cognitive improvement after taking PQQ supplement, including enhanced focus, mental clarity, and sharpness. Some users also mention additional benefits such as pain relief and potential immunity support.
Antioxidant Properties
Customers have generally positive opinions about PQQ Supplement's antioxidant properties, with some mentioning its benefits for anti-aging and cholesterol level support. However, a few customers express concerns regarding the product's stability and label instructions.

Highlights
Quality
Has a noticable positive effect on my energy levels and mental clarity/performance.
This product improved energy and overall health.
Both of which i purchased from doublewood, because of the purity of the product and lack of additives.
My first bottle's (clear) capsules remained purple in appearance until consumed ~3 weeks later; the second bottle had a few (10... Read More
Price
Whether said rapid color change is indicative of actual spoilage or progressive loss of potency is not something i can know for... Read More
They seem to be a fair price for what you get.
Competitiveness
I combined this brand of pqq with nac.
I've used five other pqq brands, and honestly not noticed a lot.
It's also more economical than most other brands, which is a plus.
After getting genes tested, it was suggested pqq and glutathione.
Overview
- How are reviewers describing this item?
good, noticed, better, level and first. - Our engine has profiled the reviewer patterns and has determined that there is minimal deception involved.
- Our engine has determined that the review content quality is high and informative.
- Our engine has detected that Amazon has altered, modified or removed reviews from this listing. We approximate total reviews altered up to 53.
- Our engine has discovered that over 80% high quality reviews are present.
- This product had a total of 1,655 reviews as of our last analysis date on Feb 16 2025.
Helpful InsightsBETA
Posted by a reviewer on Amazon
I combined this brand of pqq with nac
Posted by a reviewer on Amazon
After getting genes tested it was suggested pqq and glutathione
Posted by a reviewer on Amazon
Both of which i purchased from doublewood because of the purity of the product and lack of additives
Posted by a reviewer on Amazon
Ive used five other pqq brands and honestly not noticed a lot
Posted by a reviewer on Amazon
Flechas pqq video on youtube
Posted by a reviewer on Amazon
Energy levels were noticeably better
Posted by a reviewer on Amazon
I also had good clarity while finishing my masters degree
Posted by a reviewer on Amazon
They seem to be a fair price for what you get
Review Count History
Price History
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