Most sinus infections clear up on their own within 10 days, and the best things you can do are keep your nasal passages moist, flush out mucus, and manage pain while your body fights it off. Roughly 90% of sinus infections start as viral illnesses, meaning antibiotics won’t help. The key is knowing what actually speeds relief and when the infection has crossed a line that needs medical treatment.
Viral or Bacterial: Why It Matters
A sinus infection typically begins as a cold. Your sinuses swell, mucus gets trapped, and pressure builds. In most cases, a virus is driving the whole process, and it will resolve without medication. A bacterial infection is less common and tends to announce itself differently.
The CDC uses three patterns to identify bacterial sinusitis: symptoms that are severe for more than three to four days (fever at or above 102°F with facial pain and thick nasal discharge), symptoms that persist beyond 10 days with no improvement, or symptoms that start getting better and then suddenly worsen after five to six days. If your infection doesn’t fit any of those patterns, it’s most likely viral.
One thing worth knowing: the color of your mucus doesn’t tell you whether the infection is viral or bacterial. Green or yellow discharge is common in both. A more telling sign is tooth pain in the upper jaw or a foul smell that only you seem to notice. Both are more strongly associated with bacterial sinusitis.
Flush Your Sinuses With Saline
Saline nasal irrigation is the single most effective home treatment for sinus infections. You’re physically washing mucus, irritants, and inflammatory debris out of your nasal passages. In one well-designed study, people with chronic sinus symptoms who used a daily saline rinse saw a 64% improvement in overall symptom severity compared to those relying on routine care alone. Separate trials in adults with colds found that saline rinses improved nasal airflow, sped up mucus clearance, and reduced symptom scores.
You can use a neti pot, a squeeze bottle, or a pressurized saline spray. The technique is simple: tilt your head to one side, pour or squeeze the saline into one nostril, and let it drain out the other. Breathe through your mouth during the process. Use distilled, sterile, or previously boiled water to mix your solution. Tap water alone carries a small but real risk of introducing harmful organisms directly into your sinuses.
Doing this once or twice a day throughout your infection keeps the passages open and helps your sinuses drain naturally.
Manage Congestion and Pain
Over-the-counter decongestants reduce the swelling inside your nasal passages so trapped mucus can drain. Oral decongestants containing pseudoephedrine (sold behind the pharmacy counter in most states) work for hours at a time. Nasal spray decongestants containing oxymetazoline provide faster, more targeted relief but come with a strict limit: don’t use them for more than seven days. Beyond that, your nasal tissue can become dependent on the spray and swell worse than before, a rebound effect that’s hard to reverse.
For pain and pressure, standard pain relievers like ibuprofen or acetaminophen work well. Ibuprofen has the added benefit of reducing inflammation, which can help with the swelling that’s trapping mucus in the first place. Some combination products bundle a pain reliever with a decongestant, which is convenient but means you should avoid taking additional doses of either ingredient separately.
Children under six should not use decongestants at all. Children between six and eleven can use children’s formulations for no more than five days.
Keep Your Sinuses Moist
Dry air thickens mucus and makes it harder for your sinuses to drain. Humid air does the opposite, thinning mucus so it moves more freely. The EPA recommends keeping indoor humidity between 30% and 50%. A cool-mist humidifier in your bedroom while you sleep can make a noticeable difference in how congested you feel in the morning. Clean the humidifier regularly to avoid growing mold or bacteria in the water reservoir.
Steam also helps. A hot shower, or simply leaning over a bowl of hot water with a towel draped over your head, delivers warm moist air directly to your sinuses. The relief is temporary, but doing it two or three times a day can keep you more comfortable between saline rinses. Staying well hydrated matters too. Adequate fluid intake helps keep mucus thinner throughout your body, not just in your sinuses.
When You Need Antibiotics
Antibiotics are only useful for bacterial sinus infections, and even then, the CDC encourages “watchful waiting” for uncomplicated cases. That means giving your body a few extra days to fight the infection before starting medication. If antibiotics are appropriate, the standard course runs five to seven days for adults. Children may take them for 10 to 14 days.
Your doctor is most likely to prescribe antibiotics if your symptoms have lasted more than 10 days without improvement, if you spiked a high fever with severe facial pain early on, or if you experienced a clear worsening after initially getting better. These are the same three patterns the CDC uses to distinguish bacterial sinusitis from viral. If your illness fits one of them and you’re not improving, it’s reasonable to call your doctor rather than wait it out indefinitely.
What Recovery Looks Like
Acute sinusitis, whether viral or bacterial, typically resolves within four weeks. Most viral cases wrap up in 7 to 10 days. You’ll notice gradual changes: pressure eases, mucus thins and becomes clearer, and your sense of smell returns. The improvement isn’t always linear. You might feel better in the morning and worse at night for several days before consistently turning a corner.
If you’re on antibiotics, you should notice meaningful improvement within two to three days of starting them. If nothing has changed after three full days, contact your doctor. The antibiotic may not be targeting the right bacteria, or something else may be going on.
Warning Signs That Need Immediate Attention
Sinus infections rarely become dangerous, but the sinuses sit close to the brain and eyes, so complications can be serious when they occur. Go to an emergency room if you develop a fever above 103°F, confusion or mental changes, vision problems (especially with swelling or pain around the eyes), a stiff neck, or seizures. These can signal that the infection has spread beyond the sinuses.
Reducing Your Risk of Future Infections
If you get sinus infections frequently, the most impactful thing you can do is manage any underlying allergies. Chronic nasal inflammation from allergies keeps your sinuses swollen and poorly drained, creating a perfect environment for infections to take hold. Treating allergies with nasal corticosteroid sprays or antihistamines can break the cycle. Regular hand washing reduces your exposure to the cold viruses that trigger most sinus infections in the first place. Daily preventive saline irrigation also has research support: in one trial, adults who rinsed daily reported fewer infections, shorter symptom duration, and fewer days with nasal symptoms compared to those who didn’t.