A promising phytochemical is one thing. Proven effi cacy in the human body is an entirely different matter. “Some of the more popular botanicals have poor bioavailability,” says Bill Gurley, PhD, professor of pharmaceutical sciences at the University of Arkansas for Medical Sciences. “Researchers are thinking, ‘If we can improve bioavailability, we should be able to improve efficacy.’ I think that’s a logical step to take.” “Bioavailability is something we’ve been concentrating on at NOW Foods for some time,” says the company’s nutrition education manager and product formulator, Neil...
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