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The addition of VYVANSE combined with ADDERALL XR and DAYTRANA's market share helped Shire grow its total average share of the US ADHD market to 31.8% for the three months to March 31, 2008 (2007: 28.5%). Shire has the leading portfolio of products in the US ADHD market.
LIALDA/MEZAVANT - Ulcerative colitis
Shire launched LIALDA in the US oral mesalamine prescription market in March 2007, and during the three months to March 31, 2008 LIALDA reached an average market share of 9.1%. LIALDA's product sales in the US for the three months to March 31, 2008 were $26.7 million (2007: $nil). This compares to sales of $29.0 million in Q4 2007 which included both deferred launch sales and significant wholesaler restocking.
Sales of MEZAVANT outside the US for the three months ended March 31, 2008 were $0.5 million (2007: $nil). The product was launched as MEZAVANT XL in the UK in November 2007 and as MEZAVANT in Canada and Germany in January and February 2008, respectively. Shire launched MEZAVANT XL in Ireland in April 2008 and further launches are planned in the EU during 2008, subject to the successful conclusion of pricing and reimbursement negotiations.
PENTASA - Ulcerative colitis
Sales of PENTASA for the three months to March 31, 2008 were $44.2 million, an increase of 1% compared to the same period in 2007 (2007: $43.8 million). Sales grew despite a decrease in prescriptions due to the impact of a price increase in August 2007.
US prescriptions for the three months to March 31, 2008 were down 1% compared to the same period in 2007 primarily due to a 4% decrease in PENTASA's US average market share from 17.7% in 2007 to 17.0% in 2008, offset by a 3% increase in the US oral mesalamine market.
Since the launch of LIALDA in March 2007, PENTASA and LIALDA's combined
average market share of the US oral mesalamine market grew to 26.1% for the
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