WASHINGTON, Oct. 31 (UPI) -- Zevalin, a last-resort cancer drug, is causing alarm because of fatal side effects, prompting the Food and Drug Administration to issue a warning.
The FDA required the label on the drug Zevalin to be updated to disclose the risk of a possibly deadly skin reaction in consumers who take the drug, The Wall Street Journal reported Monday.
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The drug already had a warning on its label.
Zevalin is used with the cancer drug Rituxan when no other treatments of non-Hodgkin's lymphoma work.
Drug maker Biogen Idec Inc. has sent a letter to doctors to explain the new warning label.