How many doses of Calpol in 24 hours?
It's 4am, the fever's back, and you're trying to remember: was the last dose at midnight or 1am? And have you already hit the limit for the day? Here are the three numbers that matter, and why they're the same for almost every child.
The quick answer
- Maximum: 4 doses in any 24 hours.
- Minimum gap: at least 4 hours between doses.
- How long each lasts: 4 to 6 hours.
- Maximum run: don't give it for more than 3 days without medical advice.
Working out the amount too? Our free dose-by-age calculator shows the dose and the next-due time together.
The limit is 4 doses — for both strengths
Whether you're using Calpol Infant (the 120mg/5ml suspension for 2 months to 6 years) or Calpol 6+ (the 250mg/5ml one), the maximum is the same: 4 doses in 24 hours. The bottles differ in how much paracetamol is in each 5ml, and in the volume you measure out by age — but the cap on the number of doses per day doesn't change.
| Product | Min gap | Max in 24h |
|---|---|---|
| Calpol Infant (2–3 months) | 4 hours | 2 doses (doctor's advice only — see below) |
| Calpol Infant (3 months – 6 years) | 4 hours | 4 doses |
| Calpol 6+ (6–12 years) | 4 hours | 4 doses |
The exact amount in each dose still depends on age — check our Calpol dose by age chart for the millilitres. This article is about how many of those doses you can give, and when.
"24 hours" is a rolling window, not a calendar day
This trips a lot of parents up. The limit isn't "4 doses between midnight and midnight." It's 4 doses in any rolling 24-hour stretch. If you gave a dose at 8pm last night, that dose still counts until 8pm tonight.
A worked example for a child who needs it round the clock:
| Dose | Time given | Earliest next dose |
|---|---|---|
| 1st | 6:00am | 10:00am |
| 2nd | 11:00am | 3:00pm |
| 3rd | 4:00pm | 8:00pm |
| 4th | 9:00pm | 6:00am (next day — you've used all 4) |
After that 4th dose at 9pm, you've reached the daily maximum. You can't give a 5th until the rolling 24-hour window clears — in practice, the morning. Spacing doses out by 5–6 hours rather than the bare 4 makes the day's cover last longer.
How long one dose lasts
A single dose works on fever and pain for 4 to 6 hours. That's not a coincidence with the 4-hour gap — the dosing schedule is built around how long paracetamol stays effective in the body. As one dose wears off, the next becomes available. If you want the detail on onset and peak, see how long Calpol takes to work.
Babies under 3 months are a special case
For babies aged 2–3 months, the NHS says paracetamol should only be given on a doctor's advice — typically a single dose for fever after their vaccinations, with a possible second dose. Don't dose a baby this young off your own bat; ring 111 or your GP first. Babies under 2 months should not be given Calpol at all.
Don't run it for more than 3 days
Even within the daily limit, Calpol is for short-term relief. If your child still needs it after 3 days, or the fever is climbing rather than settling, that's a sign to get them looked at rather than to keep dosing. See when a fever needs a doctor.
What about topping up with ibuprofen?
If 4 doses of Calpol a day still isn't holding the fever, you don't give a 5th — but ibuprofen is a separate medicine with its own 24-hour limit, so some parents alternate the two. There are rules to that, and reasons not to in some children. We cover it fully in Calpol and ibuprofen together.
Frequently asked questions
How many doses of Calpol can you give in 24 hours?
A maximum of 4 doses in any 24-hour period, with at least 4 hours between each. This applies to both Calpol Infant and Calpol 6+.
How often can you give Calpol?
Every 4 to 6 hours, up to 4 times a day. Four hours is the firm minimum gap.
Can I give Calpol every 4 hours?
Yes, 4 hours is the shortest allowed gap — but you'll run out of doses for the day faster. Spacing to 5–6 hours stretches the cover across a long night.
What happens if I accidentally give a 5th dose or dose too early?
One slightly early or extra dose is unlikely to cause harm, but don't repeat it — and if you think your child has had significantly more than the daily limit, call 111 or your pharmacist straight away. Paracetamol overdose can be serious even when the child seems fine at first.
How many days can you give Calpol in a row?
No more than 3 days without checking with a pharmacist, GP or NHS 111.
How Dosey helps
The hard part isn't the rules — it's the counting, at 4am, half-asleep. Dosey logs each dose in two taps and shows you both the countdown to the next-available dose and how many you've given in the last 24 hours, so you never have to reconstruct the night from memory.
This isn't medical advice. Dosey is a record-keeping tool, not a clinic. The dosing instructions on your specific bottle, and your GP or pharmacist, are the source of truth.