Several over-the-counter options can stop a runny nose, but the right choice depends on what’s causing it. Antihistamines work best for allergies, steroid nasal sprays tackle ongoing inflammation, and saline rinses help regardless of the cause. Picking the wrong category means the medication may do nothing at all, so identifying your trigger is the first step toward relief.
Figure Out Why Your Nose Is Running
A runny nose from allergies and one from cold air, strong perfumes, or spicy food require different treatments. Allergy-driven rhinitis is an immune response triggered by pollen, pet dander, or mold spores. It tends to follow patterns: worse in spring, worse around cats, worse after moving to a new city. If your symptoms started after age 35, you have no family history of allergies, and fragrances or temperature shifts set you off, there’s a very high likelihood you have non-allergic (vasomotor) rhinitis instead.
The distinction matters because antihistamines, the most popular remedy, target allergic inflammation. They do little for non-allergic triggers. If you’ve tried allergy pills and they haven’t helped, your runny nose may not be allergic in nature.
Antihistamines for Allergy-Related Runny Noses
Second-generation antihistamines like loratadine (Claritin), fexofenadine (Allegra), and cetirizine (Zyrtec) are the standard recommendation for allergic rhinitis. They block the histamine response that makes your nose produce excess fluid, and they do it without heavily sedating you. Compared to older antihistamines, they work faster and have far fewer side effects.
Older first-generation antihistamines like diphenhydramine (Benadryl) and chlorpheniramine are no longer recommended as a go-to treatment. They cross into the brain easily, causing drowsiness, dry mouth, blurred vision, and constipation. Even when taken at bedtime, they disrupt your sleep cycle by shortening the most restorative sleep stages, leaving you groggy the next morning.
One thing to know: cetirizine, despite being a second-generation antihistamine, can still cause noticeable drowsiness in some people. If that’s an issue, fexofenadine or loratadine are less likely to make you sleepy.
Steroid Nasal Sprays for Persistent Symptoms
If your runny nose keeps coming back or never fully goes away, a steroid nasal spray like fluticasone (Flonase) is one of the most effective options available over the counter. These sprays reduce inflammation inside your nasal passages, which slows down mucus production at its source. They work for both allergic and some non-allergic causes.
The tradeoff is patience. You may need to use the spray daily for several days before noticing real improvement. This makes steroid sprays better for ongoing problems than for stopping a sudden episode. One potential side effect to be aware of: people who use steroid nasal sprays have roughly a 48% higher risk of nosebleeds compared to those using a placebo. Aiming the spray slightly away from the center wall of your nose (toward the outer wall) can help reduce irritation.
Decongestant Sprays: Effective but Short-Term Only
Decongestant nasal sprays containing oxymetazoline (Afrin) or xylometazoline shrink swollen blood vessels in the nose and can provide rapid relief. The catch is rebound congestion. If you use them too long, your nasal passages swell worse than before once the spray wears off. Most countries limit recommended use to a maximum of 10 days, though the safest approach is to keep it to three to five days.
Oral Decongestants: Choose Carefully
Not all oral decongestants are equally effective. Pseudoephedrine (the kind you have to ask for at the pharmacy counter) significantly reduces nasal congestion compared to placebo. Phenylephrine, the decongestant found on open shelves in most drugstores, performed no better than a sugar pill in clinical testing. In head-to-head comparisons, pseudoephedrine was significantly more effective than phenylephrine at relieving congestion over a six-hour period.
Keep in mind that decongestants primarily help with stuffiness and swelling rather than the watery discharge of a runny nose. If your main complaint is clear, dripping fluid, an antihistamine or anticholinergic spray will target that symptom more directly.
Prescription Options When OTC Doesn’t Work
Ipratropium bromide nasal spray is a prescription option that works differently from anything on the drugstore shelf. It blocks signals from the nerve pathways that tell your nasal glands to produce mucus. This makes it particularly useful when a runny nose is your main or only symptom, rather than one piece of a larger allergy picture. Because it acts locally inside the nose and is barely absorbed into the rest of your body, systemic side effects are minimal.
Saline Rinses as a Drug-Free Option
Saline nasal irrigation, using a neti pot or squeeze bottle, physically flushes out mucus, allergens, and inflammatory debris from your nasal passages. It also hydrates the mucus lining and improves the tiny hair-like structures (cilia) that move mucus out naturally. Isotonic saline (the same salt concentration as your body) is the easiest to tolerate and just as effective as stronger concentrations, which can sting. Twice a day is a commonly used frequency, though there’s no firm clinical consensus on an ideal number.
Saline rinses work well as a standalone approach for mild symptoms or as an add-on to medication for stubborn cases. They’re one of the few options safe for nearly everyone, including young children and pregnant women.
Quercetin and Natural Supplements
Quercetin, a plant compound found in onions, apples, and berries, has shown some ability to reduce allergy-related nasal symptoms in both animal and human studies. In mouse models of allergic rhinitis, oral quercetin at sufficient doses significantly reduced sneezing and nasal irritation, and human studies in people with pollen allergies have reported improvement in both eye and nose symptoms. The effect appears to come from quercetin’s ability to boost a protective antioxidant system in nasal tissue.
The evidence is promising but still limited compared to conventional antihistamines. Quercetin supplements are widely available, though quality and dosing vary between brands. It’s a reasonable option if you prefer a more natural approach, but don’t expect it to match the potency of a steroid spray or prescription medication for moderate to severe symptoms.
What to Know for Children
OTC cough and cold products containing decongestants or antihistamines should not be given to children under 2 years of age due to the risk of serious, potentially life-threatening side effects. Manufacturers have voluntarily relabeled these products to state “do not use in children under 4 years of age.” For young children with runny noses, saline drops and gentle nasal suctioning are the safest approaches. For children 4 and older, follow package dosing carefully and avoid stacking multiple products that contain the same active ingredient.