Over-the-counter cough and cold medicines are not safe for a 6-month-old. The FDA warns against giving these products to any child under 2 because they can cause serious, potentially life-threatening side effects like slowed breathing. Most manufacturers now label their products with a stricter warning: “Do not use in children under 4 years of age.” That leaves parents with a handful of safe, effective home remedies that work surprisingly well for clearing a stuffy little nose.
Saline Drops and Nasal Suction
Saline nasal drops are the single most effective tool for a congested baby. They’re safe, available without a prescription, and work by loosening thick mucus so it can be removed. Place two or three drops in one nostril, wait a few seconds, then use a bulb syringe or nasal aspirator to gently suction the mucus out. Repeat on the other side. Because your baby can’t blow their own nose, this combination of saline plus suction does the job for them.
Timing matters. Use saline drops right before a feeding so your baby can breathe more easily while nursing or taking a bottle. If you use them too frequently throughout the day, the skin around the nose can become irritated and sore. Limiting sessions to before feedings and before sleep is a good rule of thumb. Squeeze the air out of the bulb syringe before inserting the tip into the nostril, and clean the syringe with warm soapy water after each use.
Extra Fluids to Thin Mucus
Offering extra breastmilk or formula is one of the simplest ways to help with congestion. Staying well-hydrated thins mucus in the nose and loosens phlegm in the lungs, making it easier for your baby to breathe. At 6 months, breastmilk or formula should still be the primary source of fluids. If your baby has started solids, small sips of water can supplement, but the bulk of hydration should come from milk feeds.
A congested baby often feeds in shorter bursts because breathing through a blocked nose while eating is hard work. Offering smaller, more frequent feeds can help your baby take in enough fluid overall. Watch for signs of dehydration: fewer wet diapers than usual is the earliest clue. A baby between 6 and 23 months who goes more than 8 hours without a wet diaper may be moderately dehydrated. Other warning signs include a dry mouth, fewer tears when crying, and a soft sunken spot on the top of the head.
Cool-Mist Humidifier
Adding moisture to the air helps keep nasal passages from drying out and makes mucus easier to clear. The American Academy of Pediatrics recommends cool-mist humidifiers over warm-mist vaporizers because hot water units pose a burn and scald risk. Place the humidifier near (but not directly next to) where your baby sleeps.
The catch with humidifiers is that they need daily cleaning. Bacteria and mold grow quickly in standing water, and a dirty humidifier will blow those organisms right into the air your baby breathes. Scrub the tank with a brush and let it dry completely every day. Never leave water sitting in the reservoir when the humidifier is off. A periodic soak in a 10% bleach solution helps kill anything a daily scrub misses. Refill with clean water only when you’re ready to turn it back on.
Steam From a Hot Shower
If you don’t have a humidifier, you can create a similar effect by running a hot shower with the bathroom door closed for a few minutes. Sit in the steamy bathroom with your baby on your lap for 10 to 15 minutes. The warm, moist air helps loosen congestion. This works especially well right before a saline-and-suction session or before bedtime. Never place your baby near the hot water itself.
Baby-Safe Chest Rubs
Standard vapor rubs containing camphor, eucalyptus, and menthol are not safe for babies. These products should not be used on any child under age 2. However, baby-formulated chest rubs (sometimes labeled for 3 months and older) use milder ingredients like lavender or rosemary. Applied to the chest or the soles of the feet, they can provide mild comfort. Check the product label carefully to confirm it’s specifically made for infants, and keep it away from the face and hands where it could be ingested.
What Not to Give
Beyond OTC cold medicines, a few other common remedies are dangerous for babies this age. Honey is sometimes suggested as a natural soother, but it should never be given to any baby under 12 months. Honey can contain spores that cause infant botulism, a rare but life-threatening condition where a toxin blocks nerve signals to the muscles, potentially affecting breathing. This applies to honey in all forms: raw, cooked, or baked into foods.
Medicated nasal sprays designed for adults or older children are also off limits. These contain decongestant chemicals that can be harmful to infants. Stick with plain saline drops only.
Safe Sleep With a Stuffy Nose
It’s tempting to prop up one end of the crib mattress to help your baby breathe, but current guidelines from the CDC are clear: babies should sleep on a firm, flat surface, not one that’s angled or inclined. Elevating the mattress creates a risk of your baby sliding into a position that restricts breathing. The safest approach is to do a thorough saline-and-suction session right before laying your baby down, and run a cool-mist humidifier in the room overnight.
Signs That Need Medical Attention
Most infant congestion is caused by common colds and clears up within a week or two. But certain breathing patterns signal something more serious. Watch for fast, shallow breathing, grunting sounds with each breath, or nostrils that flare wide open as your baby inhales. Visible pulling inward of the skin between the ribs during breathing is another red flag. Any bluish tint to the lips or skin means your baby isn’t getting enough oxygen and needs emergency care immediately.
A fever above 100.4°F in a baby this age, congestion lasting longer than 10 to 14 days, or a baby who refuses to eat and shows signs of dehydration also warrant a call to your pediatrician. Congestion that seems to get better and then suddenly worsens could indicate a secondary infection that may need treatment.