Perrigo announced that the FDA has granted final approval on its Abbreviated New Drug Application (ANDA) for Azelastine HCl Nasal Spray 0.15%, the generic version of Meda’s Astepro. Astepro is indicated for seasonal and perennial allergic rhinitis in patients >12 years old.

RELATED: Rhinitis & Nasal Congestion Treatments

Azelastine HCl, a phthalazinone derivative, exhibits histamine H1-receptor antagonist activity in isolated tissues, animal models, and humans. Azelastine HCl is administered as a racemic mixture with no difference in pharmacologic activity noted between the enantiomers in in vitro studies. The major metabolite, desmethylazelastine, also possesses H1-receptor antagonist activity.

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