Den 22. april 2008 meddelte Wyeth Europa Limited officielt Udvalget for Humanmedicinske Lægemidler (CHMP), at firmaet ønsker at tilbagetrække sin ansøgning om en ny indikation for Tygacil til behandling af ikke- hospitalserhvervet lungebetændelse.
On 22 April 2008, Wyeth Europa Limited officially notified the Committee for Medicinal Products for Human Use (CHMP) that it wishes to withdraw its application for a new indication for Tygacil, in the treatment of community-acquired pneumonia.