Levitra

But the company has changed the label on Viagra to note reports of NAION."The labels have been updated," said a spokesman.Eli Lilly has also changed its labels on Cialis.

No one from the company was immediately available to comment on the new research.McGwin and his team said patients with heart disease or high blood pressure should be warned about the elevated risk of NAION when taking anti-impotence pills."Though NAION is a rare condition, the large number of men using Viagra or Cialis suggests that, should an association truly exist, the incidence of NAION could rise dramatically," McGwin added.Copyright 2006 Reuters Limited.

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