Ibuprofen Dose Calculator

Ibuprofen belongs to a group of medicines known as non-steroidal anti-inflammatory drugs (NSAIDs). Ibuprofen is used to treat different types of pain, such as pain from inflammation (redness and swelling) and pain from injury. Ibuprofen can also help to reduce fever.

  • Ibuprofen may be used if your child needs pain relief or if your child has a fever (temperature over 38.5°C) and is miserable.
  • It is not recommended to give ibuprofen before or after regular vaccinations unless your child is in pain or is miserable.

Ibuprofen should start to work quite quickly. Your child should feel less pain 20–30 minutes after taking ibuprofen.

  • Use ibuprofen only if necessary, and for the shortest period of time to reduce fever or pain.
  • It is important to see a doctor if your child needs to take ibuprofen for more than 2 days, or if it is not working.
  • For some types of long-term inflammation and pain such as arthritis, your child will need to take ibuprofen regularly.

Safety Information

Get advice from your doctor before giving ibuprofen to:

  • babies under 2 years of age.
  • children who have asthma.
  • children who have stomach problems.
  • children who have kidney or heart problems.
  • children who have allergic reactions to aspirin, ibuprofen or other anti-inflammatory medicines.

Medicines that have ibuprofen in them

Ibuprofen is available as liquid, tablets, including chewable tablets and capsules. These come in different strengths and some may be purchased from a pharmacy or supermarket without a prescription. Always check that the strength you are giving your child is safe for their age and weight. Make sure you are not giving 2 medicines that both have ibuprofen in them. Examples of medicines that have ibuprofen in them include:

  • Fenpaed
  • Nurofen For Children
  • Advil
  • Nurofen.

How to give ibuprofen to children

  • The dose for each child is based on their age and weight. Do not use the same dose for other children unless they are the same age and weight.
  • When measuring the dose of liquid ibuprofen, measure the right amount using an oral syringe or medicine spoon. You can get these from your pharmacy. Do not use a kitchen spoon as it will not give you the right amount.



Ibuprofen is usually given 3 or 4 times a day. Your doctor or pharmacist will tell you how often to give it.

  • 3 times each day: this should be once in the morning, once in the early afternoon and once in the evening. Wait at least 6 hours before giving the next dose, for example 8 am, 2 pm and 8 pm.
  • 4 times a day: this is usually first thing in the morning, at about midday, late in the afternoon and at bedtime. Wait at least 4 hours before giving the next dose, for example, 8 am, midday, 4 pm and 8 pm.

It is best to give ibuprofen with, or just after, a meal so that it does not upset your child’s stomach.