Most baby coughs are caused by common viral infections and will clear up on their own within a week or two. You can’t speed up the virus itself, but you can make your baby much more comfortable while their body fights it off. The key tools are moisture, hydration, and gentle nasal clearing. Over-the-counter cough medicines are not safe for young children and should not be used.
Why Cough Medicine Is Off the Table
The FDA does not recommend over-the-counter cough and cold medicines for children younger than 2 because they can cause serious, potentially life-threatening side effects. Manufacturers have voluntarily gone further, labeling these products with warnings not to use them in children under 4. That includes homeopathic cough and cold products, which the FDA says have no proven benefits and should not be given to children younger than 4.
This means the remedies that work for adults simply aren’t an option for babies. Instead, you’ll rely on a handful of safe, effective strategies that tackle the root cause of most coughs: mucus and irritation in the airways.
Clear the Nose With Saline and Suction
Babies breathe primarily through their noses, so a stuffy nose often triggers or worsens a cough. Saline drops paired with a bulb syringe are the most effective way to clear things out. Lay your baby on their back and place 3 to 4 drops of saline into each nostril using a nose dropper. Hold their head back for about a minute to let the saline thin the mucus.
Then squeeze all the air out of the bulb syringe before you start. While it’s still squeezed, gently place the tip into one nostril. Release the bulb slowly to pull the mucus out. Squeeze the contents onto a tissue and repeat on the other side. Limit suctioning to no more than 4 times a day to avoid irritating the nasal lining. Always suction before feedings, not after, since doing it on a full stomach can cause vomiting.
Use a Cool Mist Humidifier
Dry air irritates inflamed airways and thickens mucus, making coughs worse. A humidifier adds moisture to the room and helps your baby breathe more easily, especially at night when coughing tends to peak. Always choose a cool mist humidifier for a baby’s room. Warm mist humidifiers and steam vaporizers pose a burn risk if a child gets too close or if hot water spills.
Humidifiers need daily maintenance. Empty the tank and dry all surfaces every day to prevent mold and bacteria from growing inside. A dirty humidifier can actually make respiratory symptoms worse by blowing contaminants into the air.
Keep Your Baby Well Hydrated
Fluids thin mucus and keep the throat from drying out, both of which reduce coughing. For babies under 6 months, breast milk or formula is all they need. For older babies already eating solids, you can offer small amounts of water between regular feedings. Frequent, shorter feedings often work better than long ones when a baby is congested and struggling to breathe while eating.
Watch for signs of dehydration: fewer wet diapers than usual, a dry mouth, no tears when crying, or unusual sleepiness. If your baby’s wet diaper count drops noticeably, contact your pediatrician.
Managing Fever and Discomfort
A cough from a cold often comes with a low fever, which can make your baby fussy and reluctant to feed. Acetaminophen is generally appropriate for babies over 2 months, dosed by weight. Ibuprofen is not safe for babies under 6 months old. Always use the dosing syringe that comes with the product and go by your baby’s weight rather than age for the most accurate dose.
What Different Coughs Can Tell You
Not all coughs sound the same, and the sound can help you figure out what’s going on.
A harsh, barking cough that sounds like a seal is the hallmark of croup, which happens when the airway below the vocal cords swells. Croup often starts as an ordinary cold, then develops into that distinctive bark along with a hoarse voice and sometimes a high-pitched whistling sound when your baby breathes in. Symptoms are typically worse at night and usually last 3 to 5 days. Cool night air or sitting in a steamy bathroom for a few minutes can sometimes ease a croup episode.
A wet, rattling cough with wheezing may point to bronchiolitis, a common viral infection in babies under 12 months that affects the small airways in the lungs. A cough that comes in long, intense fits followed by a gasping inhale (sometimes called a “whoop”) can signal whooping cough, which is more dangerous and needs medical treatment.
What Not to Do
Honey is a well-known cough remedy for older children and adults, but it is dangerous for babies under 12 months. It can contain spores that cause infant botulism, a severe form of food poisoning. Do not add honey to food, water, formula, or a pacifier for any baby under one year.
You may have heard that elevating the head of a baby’s crib can help with nighttime coughing. The CDC recommends that babies always sleep on a firm, flat surface, not angled or inclined. Propping up the mattress or placing anything under it violates safe sleep guidelines. If your baby is struggling to breathe while lying flat, that’s a reason to call your doctor, not to modify the crib.
Signs That Need Immediate Attention
Most baby coughs resolve without medical intervention, but certain signs indicate your baby is working too hard to breathe. Watch for:
- Retractions: the skin pulling in below the neck or under the breastbone with each breath
- Nasal flaring: nostrils spreading wide open during breathing
- Grunting: a small grunting sound with every exhale, which means the body is trying to keep the lungs open
- Color changes: a bluish tint around the mouth, inside the lips, or on the fingernails, or skin that looks pale or gray
- Fast breathing: a noticeably increased breathing rate, especially at rest
- Cool, clammy skin with sweating: particularly on the head, without the skin feeling warm
Any of these signs means your baby needs medical evaluation right away. A cough paired with a fever above 100.4°F in a baby under 3 months also warrants an immediate call to your pediatrician, since young infants are more vulnerable to serious infections.