FDA sends Wyeth a warning letter
MAY. 30 5:36 P.M. ET The Food and Drug Administration sent Wyeth a warning letter about violations of good manufacturing practices at a plant in Puerto Rico.
The letter, which regulators posted on the agency's Web site Tuesday, said there were problems in the manufacture of several drugs, including birth control pill Triphasil, hormone replacement Prempro, antidepressant Effexor and over-the-counter pa
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