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Consumer Reports tells how "... the intake of over-the-counter supplements has reached critical mass... Also growing: the number of doctors and pharmacists adding prestige to these products. Studies suggest that some supplements may work as advertised. And there's little evidence that most people who take them are putting themselves in peril. But with prices that rise to more than 30 cents a pill, consumers can spend lots of money on products with little or no proven efficacy."

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