The safest and most effective ways to relieve a congested baby are saline drops, gentle nasal suctioning, and a cool mist humidifier. Babies breathe almost exclusively through their noses for the first several months of life, which means even mild stuffiness can disrupt feeding, sleeping, and general comfort in ways it wouldn’t for an older child or adult.
Most infant congestion clears on its own within a week or two, but there’s a lot you can do in the meantime to help your baby breathe, eat, and sleep more comfortably.
Why Congestion Hits Babies Harder
Newborns and young infants are considered obligate nasal breathers. They depend on their noses not just for air but for feeding: the way a baby’s airway is designed lets them breathe and suck at the same time, alternating between the two in rapid cycles. When the nasal passages swell or fill with mucus, that whole system breaks down. Feeding becomes a struggle because the baby has to stop sucking to gasp for air through the mouth, which often leads to fussiness, shorter feeds, and poor sleep.
Nasal breathing also plays a role in a baby’s sense of smell, which is how they locate the breast, recognize a caregiver, and feel calm. A stuffed-up nose doesn’t just make breathing harder. It cuts off sensory cues your baby relies on constantly.
Saline Drops: The First Step
Plain saline (saltwater) drops are the gentlest and most widely recommended tool for loosening thick mucus in a baby’s nose. You can find them at any pharmacy, labeled specifically for infants. Place your baby on their back, tilt their head slightly, and put two to three drops in each nostril. Wait about 30 to 60 seconds to let the saline soften the mucus before suctioning.
You can use saline drops several times a day, especially before feedings and before sleep. There are no significant side effects, and for many babies, saline alone is enough to get things moving without any suctioning at all. If you notice mucus draining on its own after the drops, you may not need to suction.
Choosing a Nasal Aspirator
Two common options are the traditional rubber bulb syringe and the nasal-oral aspirator (a tube device where a parent provides gentle suction by mouth through a filter). Both clear mucus effectively, but a randomized trial comparing the two found clear differences in the experience. Parents rated satisfaction with the nasal-oral aspirator at nearly 94%, compared to about 69% for the bulb syringe. When asked which device they preferred overall, 57% chose the nasal-oral type. The bulb syringe also caused noticeably more adverse events: 50% of families using it reported problems like nosebleeds or irritation, compared to about 18% with the nasal-oral aspirator.
Whichever device you use, the technique matters more than the tool. Squeeze the bulb before inserting the tip (never inside the nostril), place just the tip at the opening of the nose, and release slowly. Avoid deep insertion, which irritates the delicate lining. Limit suctioning to two or three times a day. Overdoing it can cause swelling that makes congestion worse.
Using a Cool Mist Humidifier
Dry air thickens mucus and irritates already-swollen nasal tissue. Running a humidifier in the room where your baby sleeps adds moisture back to the air and can make a noticeable difference overnight. The AAP specifically recommends cool mist humidifiers over warm mist vaporizers because vaporizers pose a burn risk if a child gets too close to the steam or knocks the device over.
Place the humidifier a few feet from the crib, and clean it regularly. Standing water in a dirty humidifier breeds mold and bacteria, which can make respiratory symptoms worse. Empty and dry it daily, and follow the manufacturer’s cleaning instructions.
Helping Your Baby Feed While Congested
Clearing your baby’s nose right before a feeding makes the biggest difference. Use saline drops and gentle suctioning a few minutes beforehand so the nasal passages are as open as possible when your baby latches or takes a bottle. Congested babies tend to feed in shorter bursts because they need to pause and breathe through their mouth, so you may need to offer more frequent, smaller feedings rather than trying to push a full session.
If you’re breastfeeding, an upright or slightly reclined hold can help mucus drain downward rather than pooling in the nasal passages. For bottle-fed babies, a slower-flow nipple can reduce the amount of coordination required. The goal is to keep your baby hydrated. Wet diapers are your best indicator: if your baby is producing the same number of wet diapers as usual, fluid intake is adequate.
Sleep Safety for Congested Babies
It’s tempting to prop up a congested baby’s head so mucus drains and breathing feels easier. This is not safe. The AAP recommends that babies always sleep flat on their backs on a firm, even surface, even when they’re stuffed up. Propping the head with towels, pillows, or an inclined mattress can cause the baby’s neck to flex forward or fall to the side, creating a bend in the airway that actually makes breathing harder.
The Consumer Product Safety Commission has banned the sale of inclined sleepers, defined as any product that raises the baby’s head more than 10 degrees above flat. The sleep space should also be free of pillows, blankets, pads, and stuffed animals. Instead of elevation, use saline and suctioning before bed, run a cool mist humidifier, and do a quick nasal check if your baby wakes fussy in the night.
What Not to Use on Babies
Over-the-counter cough and cold medicines are not safe for infants. The FDA warns against giving OTC cold medications to children under 2 because of the risk of serious, potentially life-threatening side effects. Manufacturers voluntarily label these products with a stricter guideline: do not use in children under 4. The FDA extends the same caution to homeopathic cough and cold products for children under 4.
Mentholated chest rubs and balms are another common product that should stay away from babies. These contain camphor, menthol, and eucalyptus, all of which are potentially toxic to infants and young children. Camphor exposure can cause convulsions, severe vomiting, and lethargy. In 2013 alone, U.S. poison control centers received over 11,500 reports of camphor exposures in children under 5. These products are not recommended for children under 2 because of the risk of accidental ingestion and increased absorption through a baby’s thinner skin.
Signs That Need Medical Attention
Most infant congestion comes from common colds or dry air and resolves without medical care. But certain breathing patterns signal something more serious. Watch for rapid, shallow breathing, flaring of the nostrils with each breath, a grunting sound during exhalation, visible pulling inward of the skin between or below the ribs, or any bluish color around the lips or skin. These are signs of respiratory distress and require immediate medical evaluation.
Also pay attention if your baby refuses to feed for multiple sessions, produces significantly fewer wet diapers than usual, runs a fever (100.4°F or higher rectally in babies under 3 months), or if congestion persists beyond 10 to 14 days. Prolonged congestion in a young infant sometimes points to something beyond a simple cold, and it’s worth getting checked.