The reason for concern is the existence of potentially severe drug interactions with SELDANE. The interactions result in abnormalities of the electrical impulse that stimulates the heart to contract and pump blood, and the interactions could be life threatening.

Why was Seldane pulled from the market?

The manufacturer of Seldane, one of the most popular allergy drugs ever sold, said Monday that it will voluntarily remove the product from the marketplace Feb. 1 in response to the Food and Drug Administration's approval of the company's safer alternative drug.

What were the side effects of Seldane?

Reported effects include dizziness, syncopal episodes, palpitations, ventricular arrhythmias, including torsades de pointes, cardiac arrest, and cardiac death.