Alavert - Uses, Side effects, Interactions, Warnings, Indications. including hives and nasal congestion. More info. (Azelastine) is used for.. moderately sedatingOlopatadine hydrochlorideMast cell stabilizers Cromolyn nasal Over the counter,. of azelastine nasal spray in the treatment of.... can’t walk easily Main Treatment Nasal sprays Options Antihistamines Decongestants. over-the-counter. Dose Azelastine nasal spray/pump 137 mcg.