Agent		Dosage
Likely to be effective
Oral decongestants
	Pseudoephedrine (Sudafed)	60 mg every 6 hours or 120 mg every 12 hours
Topical decongestants*
	Oxymetazoline (Afrin) [ corrected]	2 sprays every 12 hours
	Xylometazoline (Otrivin)	2 sprays every 8 hours
	Phenylephrine (Neo-Synephrine) [ corrected]	2 sprays every 4 hours
Possibly effective
Topical anticholinergics
	Ipratropium (Atrovent) 0.06 percent	2 sprays every 6 hours
Antihistamines†
	Brompheniramine (Dimetapp)	8 to 12 mg every 12 hours
	Chlorpheniramine (Chlor-Trimeton)	8 to 12 mg every 12 hours
	Diphenhydramine (Benadryl)	25 to 50 mg every 6 hours
Guaifenesin (Hytuss)†		600 mg every 12 hours
Nasal corticosteroids		Dosage varies‡
Hypertonic and normal saline nasal irrigation		Regimen varies
No proven benefit
Saline spray
Mist
Less sedating antihistamines
Zinc salt lozenges
Echinacea extract
Vitamin C