Giving cough syrup to your child? 5 ingredients parents must check on the label

While parents will go to any length to care for a sick child, they must exercise caution when administering cough syrup. Most parents don't stop to read the ingredients list properly, and it's easy to see why—the names are unfamiliar, the print is small, and in that moment, the priority is simply comfort. But paediatricians routinely see the consequences of that habit, and it's why so many now urge parents to slow down and check the label before anything goes near a child's mouth.

1. Dextromethorphan

Often shortened to DXM on packaging, this cough suppressant works on the brain rather than the airway. It's generally considered safe at the correct dose for the right age, but too much can cause drowsiness, confusion or, in rarer cases, more serious effects. Age limits exist for a reason, and they're not a formality.

2. Antihistamines such as Promethazine or Diphenhydramine

These are added to many syrups because they're sedating—useful for a restless night, in theory. In practice, sedating antihistamines can affect breathing in very young children and have been linked to serious harm in infants and toddlers. Several health bodies now advise against giving them to children under six, and some restrict them further still.

3. Alcohol

It sounds unlikely, but a surprising number of liquid medicines—cough syrups included—contain small amounts of alcohol as a solvent. On its own, one dose is unlikely to cause harm, but it adds up if a child is on several medicines at once, and it's simply worth knowing it's there.

4. Paracetamol or Ibuprofen (in combination formulas)

Some cough and cold syrups are combined with a pain or fever reliever. The trouble comes when a parent, unaware of this, also gives a separate dose of paracetamol or ibuprofen for a temperature. Accidental double-dosing is one of the more common reasons children end up in a paediatric emergency department, and it's almost always unintentional.

5. Codeine

Once common in children's cough remedies, codeine is now restricted or banned outright for under-12s in many countries, following evidence that children metabolise it unpredictably, with a small number reacting to it dangerously. Any label listing codeine, or its close relatives, warrants real caution and, ideally, a conversation with a doctor or pharmacist first.

Why this matters

None of this is about frightening parents away from treating a child's cough. It's about making an informed choice rather than a rushed one. A few extra seconds spent reading the label, checking the age recommendation, and confirming nothing overlaps with another medicine already in the cabinet can make a real difference. As many paediatricians point out, the safest medicine isn't necessarily the strongest one—it's the one given correctly, to the right child, at the right dose. It’s still important that all cough syrups must be taken only after a formal doctor’s prescription or advice.

Dr Aditi Sachdeva is a Consultant – Paediatrics & Neonatology at the CK Birla Hospital®, Delhi, while Dr Rohan Grotra is a Consultant - Pediatric Gastroenterology and Hepatology at Madhukar Rainbow Children’s Hospital.

The opinions expressed in this article are those of the author and do not purport to reflect the opinions or views of THE WEEK.