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NBTY's Ester C clinically proven to stay in the body longer


RONKONKOMA, N.Y. - A new clinical study conducted by NBTY demonstrated that Ester-C, a patented form of Vitamin C, stays in immune cells longer than regular Vitamin C (ascorbic acid) currently on the market, NBTY announced Monday.

The study, published in SpringerPlus, reports that Ester-C significantly increases vitamin C concentrations in white blood cells (leukocytes; cell of the immune system) up to 24 hours following a single oral administration of 1,000 mg vitamin C.

"This study is a great example of the commitment NBTY has to scientific diligence around our product innovations," stated Susan Hazels Mitmesser, senior director Nutrition and scientific affairs NBTY and lead author of the study. "As new ingredients and areas of research emerge, our scientific leadership will continue to be a priority and a differentiator in the scientific community and the supplement market with NBTY products leading the way."

"Ester-C is the only product of its kind on the market, and customers can easily find it by the '24-Hour Immune Support' call out on the label," added John Frame, VP marketing for Ester-C. "This product has been clinically studied to stay in the white blood cells longer than regular Vitamin-C - a distinct advantage to anyone looking to nutritionally support their immune system all day long."

This is the first clinical trial comparing vitamin C retention in leukocytes between Ester-C and ascorbic acid in both male and female nonsmokers.

In this double-blind, placebo-controlled, crossover trial, thirty healthy subjects aged 18–60 years were randomized to receive placebo (0 mg vitamin C), ascorbic acid (1,000 mg vitamin C), and Ester-C (1,000 mg vitamin C), each preceded by a 7-day washout period. The Ester-C group had a significantly higher mean concentration change in leukocyte vitamin C, while there was no change in the ascorbic acid or placebo groups. The Ester-C group also had a significantly higher percent change in leukocyte vitamin C compared to ascorbic acid at 8- and 24-hrs after the oral consumption.


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