Most nasal infections are caused by viruses and clear up on their own within 7 to 10 days. The key to getting rid of one faster is reducing inflammation, keeping your sinuses draining, and knowing when the infection has shifted from viral to bacterial, which is the point where antibiotics actually help. Here’s what works at each stage.
Viral vs. Bacterial: Know What You’re Dealing With
Viruses cause the majority of sinus infections. A typical cold that settles into your sinuses will bring congestion, facial pressure, thick nasal discharge, and sometimes a low fever. These symptoms peak around days 3 to 5 and then gradually improve. No antibiotic will speed this up because antibiotics don’t work on viruses.
A bacterial sinus infection is less common and usually develops after a viral one has already started. Three patterns suggest bacteria have taken over: symptoms that persist for at least 10 days with no improvement, symptoms that worsen after initially getting better (sometimes called “double worsening”), or a severe onset with a high fever and thick, discolored nasal discharge lasting at least 3 to 4 consecutive days. If your infection follows one of those patterns, it’s worth seeing a provider. Otherwise, home care is your best treatment.
Saline Rinses: The Single Most Effective Home Step
Flushing your nasal passages with salt water physically washes out mucus, bacteria, and inflammatory debris. You can use a neti pot, squeeze bottle, or bulb syringe. The technique matters less than the water you use.
The FDA warns that tap water is not safe for nasal rinsing because it isn’t filtered well enough to remove all organisms. Use one of these instead:
- Distilled or sterile water from a sealed container
- Boiled tap water that has been boiled for 3 to 5 minutes, then cooled to lukewarm (use within 24 hours)
- Filtered water passed through a filter rated to trap infectious organisms
Pre-made saline packets are the easiest option and come with most rinse kits. If you’re mixing your own, follow the device manufacturer’s ratio. Rinsing once or twice a day during an active infection helps thin mucus and relieve pressure. Many people notice an improvement within the first day or two.
Keep Your Sinuses Draining
A sinus infection gets worse when mucus can’t drain. Anything that reduces swelling in the nasal passages or thins mucus will help your body clear the infection faster.
Indoor humidity plays a direct role. Your nasal lining is designed to stay at nearly 100% relative humidity under normal conditions. Breathing dry air, especially from heating systems in winter, dries out the mucosa and triggers inflammation. A cool-mist humidifier in your bedroom keeps the air moist enough to prevent crusting and helps mucus move. Aim for 40 to 50% relative humidity indoors.
Drinking plenty of fluids thins mucus from the inside. Warm liquids like tea, broth, or plain hot water can be especially soothing because the steam adds moisture to your nasal passages as you sip. A warm, damp towel held over your face for a few minutes can also loosen congestion.
Sleeping with your head slightly elevated encourages drainage by gravity. An extra pillow or a wedge under your mattress is enough.
Over-the-Counter Medications That Help
Decongestant nasal sprays containing oxymetazoline or phenylephrine shrink swollen blood vessels in the nose and provide fast relief. But there’s a hard limit: do not use them for more than three consecutive days. After that, your blood vessels become dependent on the spray. When the medication wears off, the vessels swell back up even more than before, creating “rebound congestion” that can be worse than the original problem.
Oral decongestants (like pseudoephedrine) don’t carry the same rebound risk and can be used for a longer stretch, though they can raise blood pressure and cause restlessness. Pain relievers like ibuprofen or acetaminophen help with the facial pain and headache that often accompany sinus infections. Ibuprofen also reduces inflammation, which gives it a slight edge for sinus pressure specifically.
Steroid nasal sprays work differently from decongestants. They reduce inflammation in the nasal lining without causing rebound. For chronic or recurrent infections, these sprays have strong evidence behind them. One large analysis of 24 trials found that steroid sprays significantly reduced nasal polyp size and mucosal swelling compared to placebo. Over-the-counter options are available, and they’re safe for longer-term use, though they take a few days to reach full effect.
When Antibiotics Are Needed
Even when a bacterial infection is suspected, guidelines for adults allow for either starting antibiotics or “watchful waiting” for up to 7 more days, as long as follow-up is possible. Many bacterial sinus infections resolve without medication. But if symptoms aren’t improving after that window, or if they’re worsening at any point, antibiotics are appropriate.
The first-line antibiotic is amoxicillin, sometimes combined with clavulanate (a compound that helps it work against resistant bacteria). A typical course runs 5 to 14 days depending on severity. Most people start feeling better within 2 to 3 days of starting treatment. If you don’t notice improvement within that window, your provider may switch medications.
Acute, Subacute, and Chronic Infections
How long your symptoms last determines the category of infection and shapes the treatment approach. Acute sinusitis lasts up to four weeks and is the most common type. Subacute sinusitis lingers between four and twelve weeks. Chronic sinusitis persists for twelve weeks or longer and often involves ongoing inflammation rather than active infection. Some people experience recurrent acute sinusitis, defined as four or more episodes per year with complete symptom-free periods in between.
If your nasal infection keeps coming back or drags on past the four-week mark, the underlying cause may be structural (like a deviated septum or nasal polyps), allergic, or related to persistent inflammation that needs targeted treatment. A provider can use imaging or a nasal scope to identify what’s keeping the cycle going.
Warning Signs That Need Immediate Attention
Most sinus infections are uncomfortable but not dangerous. A small number can spread to nearby structures, including the eye sockets and the lining of the brain. Get immediate medical care if you develop pain, swelling, or redness around your eyes, double vision or other vision changes, a high fever, confusion, or a stiff neck. These can signal an infection that has moved beyond the sinuses and needs urgent treatment.