Bayer's marketing claimed the selenium in its product could reduce the risk of the disease.
In a statement, the CSPI said it contacted Bayer in June with proof that selenium does not have the desired effect on prostate cancer.
The Centre for Science in the Public Interest has filed a lawsuit against the multinational pharmaceutical company Bayer over ads claiming its multivitamin, One A Day Men's, could reduce prostate cancer.
Bayer's marketing claimed the selenium in its product could reduce the risk of the disease.
In a statement, the CSPI said it contacted Bayer in June with proof that selenium does not have the desired effect on prostate cancer.
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