Frequently Asked Questions
These are the questions people ask most often about my formulas, the ingredients in them, and the science behind them. I have grouped them by topic so you can go straight to what you need. Each topic page carries the full answers, with citations to the published research where it exists.
Browse FAQ Topics
Dr Lewis Nutrition®, Dietary Supplements, Health, and Science
How dietary supplements are regulated, what DSHEA covers, how to read a research paper, and how to judge whether a product has real evidence behind it. 16 questions
Daily Brain Care
What is in the formula, how to take it, what my clinical research measured, and what to expect over time. 23 questions
Ordering Daily Brain Care
Shipping, subscriptions, delivery times, returns, and wholesale accounts. 12 questions
Polysaccharides and Aloe Vera
What polysaccharides are, why the aloe fraction matters, and what my published trials examined. 10 questions
Rice Bran
The most nutrient-dense part of the rice kernel, and what researchers have measured across laboratory, animal, and human studies. 16 questions
Sunflower Lecithin
Choline and phospholipids, and how they support cell membrane structure and healthy brain function. 14 questions
Dioscorea / Wild Yam
What the root contributes to the formula, and what has been studied in rodent models. 9 questions
NAC (N-Acetyl Cysteine)
How N-acetyl cysteine supports the body's production of glutathione, its master antioxidant. 14 questions
EGCG (Green Tea Extract)
The green tea polyphenol, its antioxidant activity, and why bioavailability matters. 6 questions
Camelina
The omega-3 source, and how it compares with other seed oils. 6 questions
Still have a question?
If your question is not answered here, please contact us and we will answer it directly. You can also read more about my background and research, or see the formula itself on the Daily Brain Care page.