A runny nose usually responds well to a combination of simple home strategies and, when needed, over-the-counter treatments. The right approach depends on what’s causing it, so the first step is figuring out whether you’re dealing with a cold, allergies, or dry-air irritation. From there, you can pick the remedies that actually target the problem.
Figure Out What’s Causing It
Colds and allergies are the two most common culprits behind a runny nose, and they look surprisingly similar. Both cause sneezing, congestion, and drainage. But a few details set them apart.
If your eyes itch, you probably have allergies. Itchy eyes rarely show up with a cold. Allergies also never cause a fever, while colds sometimes do. A sore throat and cough point more toward a cold. Allergies tend to produce clear, watery mucus that lingers for weeks (especially during pollen season), while a cold typically resolves in 3 to 10 days and the mucus may thicken or change color as it progresses. Puffy eyelids and dark circles under the eyes are another allergy giveaway.
This distinction matters because the treatments differ. Antihistamines work well for allergies but do little for a viral cold. Decongestants help with stuffiness from either cause but won’t stop the dripping on their own.
Rinse With Saline
Saline nasal irrigation is one of the most effective and underused tools for a runny nose, regardless of the cause. Flushing warm salt water through your nasal passages clears out mucus, allergens, and irritants from the nasal lining, which eases inflammation and reduces how much your nose runs. Both isotonic (same salt concentration as your body) and hypertonic (slightly saltier) solutions improve mucus clearance. Hypertonic solutions may offer a small additional anti-inflammatory benefit, but studies show the two perform about equally well in practice.
You can use a squeeze bottle, neti pot, or bulb syringe. Pre-mixed saline packets are inexpensive and widely available at pharmacies. The one safety rule that matters: never use plain tap water. Unsterilized water carries a small but serious risk of parasitic infection. Use water labeled “distilled” or “sterile,” or boil tap water at a rolling boil for one minute (three minutes above 6,500 feet elevation), then let it cool before use. The CDC also outlines a bleach disinfection method as a backup, but distilled or boiled water is simplest.
Rinsing once or twice a day during a cold or allergy flare can noticeably cut down on drainage and reduce your need for medications.
Choose the Right Over-the-Counter Medication
If saline alone isn’t enough, a few types of OTC medication can help, but picking the right one matters more than most people realize.
Antihistamines for Allergies
If allergies are the cause, an antihistamine is your best bet. These block histamine, the chemical your immune system releases during an allergic reaction, which directly reduces sneezing, itching, and nasal dripping. Non-drowsy options like cetirizine (Zyrtec) and loratadine (Claritin) work well for most people. Keep in mind that antihistamines only block one of several chemicals involved in allergy symptoms, so they may not eliminate the runny nose completely. It can also take some trial and error to find the one that works best for you.
If your runny nose is from a cold virus, antihistamines generally won’t help much. Older, sedating antihistamines have a mild drying effect that some people find useful during colds, but the newer non-drowsy versions have little impact on viral symptoms.
Decongestant Sprays (With Caution)
Nasal decongestant sprays containing oxymetazoline (Afrin) can rapidly open up swollen nasal passages. They’re helpful when congestion is severe. But there’s a hard limit: do not use them for more than three consecutive days. After about three days, these sprays trigger rebound congestion, a condition called rhinitis medicamentosa, where your nose becomes more blocked than it was before you started. This can create a cycle that’s difficult to break.
Skip Oral Phenylephrine
Many popular cold medicines on store shelves contain oral phenylephrine as a decongestant. The FDA has proposed removing it from the market after an expert panel unanimously concluded it doesn’t actually work at standard oral doses. The proposal hasn’t been finalized, so these products are still sold, but you’re better off choosing a product with a different active ingredient. This only applies to the oral form; phenylephrine in nasal sprays still works.
Adjust Your Environment
Dry indoor air irritates nasal passages and can make a runny nose worse, especially in winter when heating systems pull moisture out of the air. A humidifier in your bedroom or main living area helps. The ideal indoor humidity range is 30% to 50%. Going above 50% creates conditions for mold and dust mites, which can trigger their own round of nasal symptoms.
Staying well hydrated thins mucus and makes it easier to clear. Warm liquids like tea, broth, or plain hot water can feel especially soothing because the steam helps loosen congestion while the fluid keeps you hydrated. Propping your head up with an extra pillow at night lets gravity drain your sinuses and reduces that feeling of everything pooling in the back of your throat.
What to Do for Children
The rules change significantly for kids. Manufacturers label OTC cough and cold products (including decongestants and antihistamines) as not for use in children under 4 years of age, and the FDA warns that children under 2 should never receive these products due to the risk of serious side effects, including seizures and dangerously rapid heart rates.
For young children, saline drops or spray paired with a bulb syringe to gently suction mucus is the safest and most effective approach. A cool-mist humidifier in the child’s room and plenty of fluids round out the basics. For children old enough to take OTC medications, follow the weight-based dosing on the package rather than going by age alone.
Signs the Runny Nose Needs Medical Attention
Most runny noses clear up on their own or with the strategies above. But if you have a runny nose, stuffiness, and facial pain or pressure that haven’t improved after 10 days, you may have developed a bacterial sinus infection. Another pattern to watch for: symptoms that seem to get better, then return worse than before. Both scenarios often require a course of antibiotics that only a healthcare provider can prescribe. A high fever, severe headache, or stiff neck alongside nasal symptoms also warrants prompt evaluation.