The ancient practice of nasal saline irrigation, also known as nasal irrigation, has gained traction in recent years as a cost-effective and evidence-based way to combat the common cold and other upper respiratory tract infections. This practice involves flushing the nasal cavity with a saltwater solution, which can help alleviate symptoms, reduce viral transmission, and even lower the risk of hospitalization.
Nasal saline irrigation works by physically flushing out debris, including mucus, crust, allergens, and viruses, from the nasal passage. The saltwater solution also creates an inhospitable environment for viruses to replicate and helps restore the natural defense system of the nasal passage, which includes microscopic hairlike projections called cilia that help expel foreign particles from the body.
Research has shown that nasal saline irrigation can reduce the duration of symptomatic illness by up to two days when initiated at the first sign of symptoms and performed multiple times per day. It has also been shown to decrease the viral load of COVID-19 in hospitalized patients and reduce the use of allergy medications in patients with allergic rhinitis.
One of the most significant benefits of nasal saline irrigation is its potential to decrease unnecessary antibiotic prescriptions, which are a major contributor to antibiotic resistance. Despite the well-established fact that antibiotics do not shorten the duration or reduce the severity of viral respiratory infections, many patients still leave their doctor’s office with a prescription in hand. Nasal saline irrigation offers a more effective alternative that can help keep patients out of the hospital and prevent the spread of illness.
To try nasal saline irrigation at home, you don’t need any fancy equipment. A simple neti pot or pump-action spray bottle can be used to flush the nasal cavity with a saltwater solution. By incorporating this ancient practice into your daily routine, you may find relief from common cold symptoms, allergies, chronic congestion, postnasal drip, and recurrent sinus infections. Many pharmacies offer saltwater solutions in convenient containers with nozzles or spray bottles, but you can easily make your own at home. To create a homemade saltwater solution, simply mix half a teaspoon of non-iodized salt with one cup of either distilled water or water that has been boiled for at least five minutes and then cooled. This step is crucial for eliminating any harmful bacteria that may be present. For added comfort, you can also include a pinch of baking soda to reduce any potential stinging sensation.
It’s important to note that saltier solutions are not necessarily more effective. However, some studies suggest that natural seawater, with its additional minerals like magnesium, potassium, and calcium, may offer even greater benefits for nasal irrigation.
If you find that homemade solutions are not providing the desired relief, commercially available saltwater solutions are also an option worth considering. These products may be more effective for individuals who do not respond well to saline alone.
Nasal saline irrigation can be particularly beneficial after potential exposure to infectious illnesses. For optimal results, it is recommended to begin irrigating the nasal passages at the first sign of an infection. You can repeat rinses throughout the day as needed for the duration of the illness, with a minimum of irrigating the nasal passages every morning and evening.
In addition to nasal irrigation, gargling with salt water can serve as an adjunctive therapy. This simple practice can help soothe a sore throat and provide relief for other symptoms associated with respiratory infections.
Overall, incorporating saltwater solutions into your healthcare routine can help promote nasal and throat health, especially during times of illness. Whether using homemade or commercially available products, the benefits of saline irrigation are well-supported by research and can be a valuable addition to your wellness regimen.

