GlaxoSmithKline to Divest US Rights for Wellbutrin XL(R) to Biovail for $510 Million

RESEARCH TRIANGLE PARK, N.C., May 6 /PRNewswire-FirstCall/ -- GlaxoSmithKline plc (NYSE: GSK) today announced that it has entered into an agreement to divest full commercial rights to Wellbutrin XL(R) in the United States to Biovail International Laboratories SRL, a subsidiary of Biovail Corporation (NYSE, TSX: BVF), for $510 million (euro 340 million). The agreement is subject to Hart-Scott-Rodino regulatory clearance in the United States.

Generic competition to Wellbutrin XL began at the end of 2006 for the 300mg tablet and during the second quarter of 2008 for the 150mg tablet. US sales of Wellbutrin XL in the first quarter of 2009 were euro 45 million (-70%).

"We are actively reshaping our US business and managing the transition occurring in our product portfolio," said Deirdre Connelly, President North American Pharmaceuticals, GlaxoSmithKline. "This transaction is one of a series of actions we are taking to maximize the value of our current assets and to enable us to resource and invest in new products and upcoming launches."

Under the terms of the agreement, GSK will transfer the US NDA and license the Wellbutrin XL trademark to Biovail for use in the US. GSK will retain existing rights to Wellbutrin XL (excluding Canada) for countries outside the US. Sales of Wellbutrin XL outside the US were euro 7 million in the first quarter of 2009.

GSK expects to record a pre-tax gain of approximately euro 340 million in Other Operating Income as a result of this divestment. The company now expects the combined total of Other Operating Income and profit on disposal of interests in associates to be around euro 700 million in 2009.

Wellbutrin XL (bupropion hydrochloride extended-release tablets) is indicated for the treatment of major depressive disorder and seasonal affective disorder. It was developed by Biovail and has been distributed by GSK in the United States since September 2003.

GlaxoSmithKline - one of the world's leading research-based pharmaceutical and healthcare companies - is committed to improving the quality of human life by enabling people to do more, feel better and live longer. For further information please visit www.gsk.com

Cautionary statement regarding forward-looking statements

Under the safe harbor provisions of the U.S. Private Securities Litigation Reform Act of 1995, GSK cautions investors that any forward-looking statements or projections made by GSK, including those made in this announcement, are subject to risks and uncertainties that may cause actual results to differ materially from those projected. Factors that may affect GSK' s operations are described under 'Risk Factors' in the 'Business Review' in the company' s Annual Report on Form 20-F for 2008.

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SOURCE GlaxoSmithKline plc

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