Perrigo's 'Inversion' Of Flonase Trademark Cuts Too Close For Glaxo's Market Share Comfort

Glaxo says it distributed more than $330m in Flonase Allergy Relief in 2015, its first year available as the second-in-category corticosteroid nasal spray, but argues that Nasoflow, Perrigo's brand for a generic equivalent, unfairly will encroach on its sales and market share.