Allegra is intended for the person with seasonal allergy symptoms ... are taking an MAO inhibitor (a medication for depression) or have stopped taking an ...

"Since seasonal allergic rhinitis symptoms are largely mediated through histamine H1-receptors, H1-receptor antagonists such as Allegra have become the therapy of choice for people suffering from seasonal allergic rhinitis, " said Peter H. Howarth, DM, of the Respiratory Cell and Molecular Biology Division at Southampton General Hospital in Southampton, United Kingdom.

Discussion group for Allegra patients.