According to the Terms and Conditions section of his website, Dr. Brownstein absolves himself of liability from the medical advice he gives in his books and on his website. Without peer-reviewed science to back his claims, it is not safe to follow his advice.
Dr. David Brownstein is a holistic medicine practitioner and the Medical Director of the Center for Holistic Medicine in West Bloomfield, Michigan, according to his website. The FDA does not regulate alternative medicine supplements such as those sold on his website. Since Dr. Brownstein profits from book and supplement sales, it is necessary to view his claims with caution.
Perhaps one-third of alternative therapies have any real research behind them, states USA Today. Most doctors state that holistic and alternative medicines and therapies should be used as a complement to medical treatment overseen by doctors, if at all.