The appointment marks McCann Hong Kong's first health care account. This is also the first time MSD has engaged an advertising agency to market this brand.
The creative pitch, which took place in July, involved another undisclosed non-4A agency. The first campaign will launch through traditional media, targeting the mass public.
Nasonex is a prescription nasal allergy spray for the treatment of seasonal and perennial nasal allergy for adults and children. It has been in the market for over a decade.
ZenithOptimedia currently handles the brand's media account.
In December, MSD handed its regional creative account to Saatchi & Saatchi.