is astelin otc
The active ingredient is azelastine, the same one as found in the prescription nasal spray Astelin and Astepro. Azelastine has a triple mode of action: anti-histamine effect, mast-cell stabilizing effect, and anti-inflammatory effect.owever, in May 2011, Meda Pharma announced a new anti-histamine nasal spray Rhinolast Allergy that is available over-the-counter.