Depends on what…: …symptoms you're treating. Astelin is an antihistamine used for seasonal allergic rhinitis & for vasomotor rhinitis. Side effects may include drowsiness, nasal irritation, sneezing, headache, nausea, fatigue, nosebleed, & more. Oral non-sedating antihistamines may control your symptoms just as well.
Answered 4/30/2016
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