The fastest way to clear your nostrils when you’re sick is a saline rinse, which physically flushes out mucus and reduces swelling in your nasal passages. But congestion isn’t just about mucus. Most of that stuffed-up feeling comes from swollen blood vessels inside your nose, which narrow the airway and make breathing difficult. That means the best approach combines methods that reduce swelling with ones that move mucus out.
Why Your Nose Feels Blocked
When you catch a cold or sinus infection, your immune system floods the nasal lining with inflammatory compounds like histamine. These cause the blood vessels in your nasal passages to dilate and leak fluid into surrounding tissue. The result is engorgement of the structures inside your nose (especially the turbinates, the ridges along the inner wall), tissue swelling, and a surge in mucus production. All three contribute to that plugged feeling, but the vascular swelling is usually the biggest factor. That’s why blowing your nose over and over often doesn’t help much.
Saline Rinse With a Neti Pot or Squeeze Bottle
A saline rinse is one of the most effective, drug-free ways to clear your nasal passages. You pour or squeeze a saltwater solution into one nostril and let it drain out the other, washing away mucus, inflammatory debris, and irritants. Neti pots, squeeze bottles, and bulb syringes all work. The key is using the right water.
The CDC recommends using only distilled or sterile water (sold at any pharmacy), or tap water that has been boiled at a rolling boil for one minute and then cooled. At elevations above 6,500 feet, boil for three minutes. Never use unboiled tap water. Rare but serious infections, including one caused by a brain-eating amoeba called Naegleria fowleri, have been linked to rinsing sinuses with untreated tap water. If distilled water and boiling aren’t options, you can disinfect water with a few drops of unscented household bleach: about 5 drops per quart for standard 4% to 6% concentration bleach.
Most people notice relief within seconds of rinsing. You can safely do this two to three times a day while you’re congested.
Nasal Decongestant Sprays
Over-the-counter sprays containing oxymetazoline (the active ingredient in Afrin and similar products) work by constricting the swollen blood vessels in your nose. Relief is fast, often within minutes, and the effect is dramatic. The catch is duration of use: manufacturers recommend limiting regular use to no more than one week. Beyond that, you risk rebound congestion, a condition where the nasal lining swells even worse than before, creating a cycle of dependency on the spray.
If you need quick relief for sleep or a specific event, these sprays are effective. Just treat them as a short-term tool, not a daily habit.
Oral Decongestants: What Actually Works
If you’ve reached for an oral decongestant, pay attention to the active ingredient. An FDA advisory committee unanimously concluded that oral phenylephrine, found in products like Sudafed PE and DayQuil, works no better than a placebo for nasal congestion. Multiple studies have confirmed this. Pseudoephedrine, on the other hand, does reduce congestion effectively. It’s sold behind the pharmacy counter in the U.S. (you’ll need to show ID), but it doesn’t require a prescription.
Note that the FDA’s finding applies only to oral formulations. Phenylephrine nasal sprays are still considered effective because the drug reaches the nasal tissue directly rather than being broken down in the gut.
Steam and Warm Moisture
Breathing in warm, humid air can temporarily loosen mucus and make your nose feel more open. The UK’s National Institute for Health and Care Excellence recommends steam inhalation for symptomatic relief of cold symptoms, though a Cochrane review found the evidence for its effectiveness is mixed.
The real concern with steam is safety. A UK burns center identified 19 patients over just two years who were scalded during steam inhalation, and a national survey found 201 scald cases in a two-year window. Nearly all injuries happened when people leaned over an open bowl of boiling water and knocked it over. If you want the benefits of steam, a hot shower is the safest option. Standing in a steamy bathroom gives you warm, moist air without the burn risk. Modern electric vaporizers are safer than open bowls but still carry some risk of hand burns.
Humidifier Use at Home
Dry indoor air, especially in winter with heating running, pulls moisture from your nasal lining and makes congestion feel worse. A humidifier adds moisture back into the room and can ease breathing while you sleep. The Mayo Clinic recommends keeping indoor humidity between 30% and 50%. Going above 50% encourages mold, dust mites, and bacteria to grow, which can worsen your symptoms or create new ones.
Clean your humidifier regularly. Standing water in the tank becomes a breeding ground for microorganisms that then get sprayed into the air you breathe.
Sleeping With Congestion
Congestion almost always feels worse at night. When you lie flat, blood pools in the vessels of your nasal lining, increasing swelling. Mucus also collects at the back of your throat instead of draining forward. Sleeping with your head elevated helps with both problems. Stack an extra pillow or two, or slide a wedge pillow under the head of your mattress. You don’t need a steep angle. Even a modest elevation improves drainage and keeps mucus from pooling in your throat.
Combining elevation with a saline rinse about 15 minutes before bed and a humidifier running in the room gives you the best chance of breathing through the night.
Clearing a Baby’s Nose
Infants can’t blow their noses, so they depend on you. The American Academy of Pediatrics recommends placing two drops of plain saline (no added medication) into each nostril to loosen the mucus, then using a bulb syringe to gently suction it out. Squeeze the bulb first, before placing the tip in the nostril, so it doesn’t push a burst of air deeper into the nose and drive congestion further in.
Doing this about 15 minutes before feeding or naptime helps babies eat and sleep more comfortably. You can make your own saline at home using previously boiled, cooled water and salt, or buy premade saline drops at any pharmacy.
Nasal Strips
Adhesive nasal strips (like Breathe Right) work by physically pulling the nostrils open from the outside. They expand the cross-sectional area of the nasal valve, reducing airflow resistance and preventing the sidewalls of the nose from collapsing when you inhale. They won’t reduce swelling or clear mucus, but they can make each breath feel noticeably easier, especially at night. They’re drug-free and safe for repeated use, making them a good complement to saline rinses or humidifiers.
When Congestion Signals Something More
Most colds start to improve after three to five days. If your congestion and other symptoms last longer than 10 days without any improvement, that pattern suggests a bacterial sinus infection rather than a simple viral cold. Another red flag is “double worsening,” where a cold seems to be getting better for a few days, then suddenly rebounds and gets worse. Both patterns are worth bringing to a doctor, because bacterial sinus infections typically need a different treatment approach than the home remedies that work for a cold.