Allegra, the third biggest global allergy brand, had big ambitions to become the global number one brand in ... Consumers also see all brands as the same: with similar functional claims and not owning ...

You can monitor local pollen levels on weather or allergy apps or on sites such ... Getty Images Some antihistamines, like Claritin-D and Allegra-D, come combined with pseudoephedrine (Sudafed).