Child Fever Medicine Overdose: Signs and What to Do
If you think your child has had too much paracetamol or ibuprofen, do not wait for symptoms. Paracetamol overdose can damage the liver and signs are often delayed by hours or days. This page covers what to do now, what to watch for, and where to go in Singapore.
What to do now
If you think your child has had too much medicine
- !Your child is unresponsive, having a seizure, or struggling to breathe
- !Your child is vomiting repeatedly, confused, or very hard to rouse
- !You are unsure how much was taken or who gave the dose
- !A large amount was taken (more than double the normal dose, or a swallowed bottle)
- !Your child seems well, but you think one extra dose was given
- !The same medicine was given by two caregivers in a short window
- !You gave the wrong concentration (e.g. used the 250 mg/5 ml syringe on the 120 mg/5 ml bottle)
- !A combination cold or flu syrup was given on top of paracetamol
Common ways it happens
Most accidental overdoses in children are not from a dramatic event. They come from one of these everyday situations:
- Two caregivers each gave a dose without knowing the other had. Common at handover times or when grandparents are helping.
- A combination cold or flu syrup was given on top of separate paracetamol, both containing the same active ingredient.
- The wrong concentration was used. A 5 ml dose of 250 mg/5 ml paracetamol contains more than twice the medicine of a 5 ml dose of the 120 mg/5 ml bottle.
- The daily cap was exceeded over a long night of doses (4 for paracetamol, 3 for ibuprofen).
- A child accessed a bottle and swallowed an unknown amount.
Knowing which of these has happened helps the doctor decide what to do. Write it down before you leave the house.
Paracetamol overdose: signs and timeline
Paracetamol overdose damages the liver. The most important thing to understand is that symptoms are often delayed, and a well-looking child can still be in danger.
Often no symptoms, or mild nausea, vomiting, sweating, looking pale. A child can look fine here even after a dangerous dose.
Symptoms may briefly improve, but liver injury is developing. Right upper stomach pain or tenderness can appear. Blood tests at this stage show liver enzymes rising.
Jaundice (yellow skin or whites of the eyes), confusion, bleeding or bruising easily. This phase is dangerous and needs hospital care.
Hospital treatment with an antidote (N-acetylcysteine) is most effective within the first 8 hours, and works less well after 24 hours. This is why you should not wait for symptoms before seeking advice.
Ibuprofen overdose: signs and timeline
Ibuprofen overdose mainly affects the stomach and kidneys. Symptoms usually appear faster than with paracetamol, often within a few hours.
- Stomach pain, nausea, vomiting (sometimes with a small amount of blood).
- Drowsiness or dizziness.
- Headache, ringing in the ears.
- Rapid breathing or feeling short of breath.
- Reduced urine output, which can be a sign of kidney involvement and may take 24 to 48 hours to show.
Ibuprofen overdose risk is higher in dehydrated children and in children with existing kidney problems. If your child has been unable to drink during a fever, the kidney risk from any extra ibuprofen is greater than usual.
What to do while waiting for help
- Do not try to make your child vomit. This is no longer recommended and can be harmful.
- Do not give them anything else by mouth unless told to by a doctor (no milk, no charcoal at home).
- Keep them awake and sitting up if possible. If drowsy and vomiting, place them on their side.
- Note the exact time of the dose, the dose amount, and the bottle concentration.
- Bring the bottle, the leaflet, and any remaining medicine to the hospital.
What will happen at the hospital
Doctors will first check your child's breathing, circulation, and consciousness. They will ask about exactly what was taken and when. For paracetamol overdose, a blood test timed from the dose helps decide whether the antidote is needed. For ibuprofen, they will check kidney function and watch for stomach bleeding.
If your child is well and the dose was not large, you may simply be observed for a period and sent home with instructions. It is normal to leave with a follow-up plan rather than more medicine.
Preventing the next near miss
- Agree with your partner or any caregiver who gives the next dose. Out loud, before each shift.
- Use the syringe that came with the bottle. Concentration changes with brand and product line.
- Check the active ingredients on combination cold and flu syrups before giving them with paracetamol.
- Keep all medicines in their original packaging, in a high cupboard out of children's sight.
- Write down each dose: time, medicine, and amount. A shared note or an app is more reliable than memory under stress.
→ Paracetamol dosage guide for children
→ Ibuprofen dosage guide for children
Frequently asked questions
My child had one extra dose of paracetamol. Is that an overdose?+
One extra dose at the normal weight-based amount is usually not dangerous, but it depends on how much was given in total over 24 hours. Call your GP or polyclinic for advice. Note the time and the dose so you can answer their questions.
How long do paracetamol overdose symptoms take to appear?+
Early symptoms (nausea, vomiting, stomach pain) can appear within hours, but the dangerous phase is delayed. Liver damage may not show until 24 to 72 hours after the dose. A child who looks well after a paracetamol overdose can still be in danger. Do not wait.
What if I am not sure how much was taken?+
Treat it as an emergency. Go to your nearest 24-hour A&E with the medicine bottle and any remaining medicine. Doctors can measure paracetamol levels in the blood and start treatment if needed. It is safer to be checked and sent home than to wait at home.
Are cold and flu syrups risky to combine with paracetamol?+
Yes. Many combination cold, flu, and cough syrups contain paracetamol already. Giving these on top of separate paracetamol doses is one of the most common ways an unintentional overdose happens. Check the active ingredients on every bottle before giving anything.
My child seems fine. Should I still see a doctor?+
Yes, if there is any chance of an overdose. Paracetamol in particular can cause serious liver injury with no early warning signs. A blood test taken at the right time tells doctors whether treatment is needed.
What should I bring to A&E?+
Bring the medicine bottle (or photo of the label), any leaflet, any remaining medicine, and a note of: what was given, when, how much, and whether anything else was given (including cold and flu syrups). If two caregivers were involved, both should share what they know.