Ouch—Zetia and Vytorin are continuing to lose share.
(Figures from SGP’s SEC filing in thousand of US Rx’s.)
Zetia+Vytorin
Zetia Vytorin Zetia+Vytorin Market Share
Nov08 893 1,086 1,979 10.3%
Oct09 978 1,207 2,186 10.6%
Sep08 969 1,202 2,171 10.9%
Aug08 984 1,249 2,233 11.2%
Jul08 1,038 1,339 2,376 11.7%
Jun08 1,022 1,330 2,351 12.2%
May08 1,067 1,412 2,479 12.5%
Apr08 1,079 1,428 2,507 12.8%
Mar08 1,201 1,619 2,820 14.3%
Feb08 1,183 1,607 2,790 14.7%
Jan08 1,375 1,851 3,226 15.7%
http://sec.gov/Archives/edgar/data/310158/000095012308017796/y73451exv99w1.htm