Treatment of Nonallergic Rhinitis For viral rhinitis, decongestants, antihistamines, or both For atrophic rhinitis, topical treatment with antibiotics, estrogens, and vitamin A and D For vasomotor rhinitis, humidification and sometimes topical corticosteroids and oral pseudoephedrine Viral rhinitis may be treated symptomatically with decongestants (either topical vasoconstriction with a sympathomimetic amine, such as oxymetazoline every 8 to 12 hours or phenylephrine 0.25% every 3 to 4 hours for not more than 7 days, or systemic sympathomimetic amines, such as pseudoephedrine 30 mg orally every 4 to 6 hours).