Paracetamol (acetaminophen) is a pain reliever and fever reducer. It's used to treat many conditions such as headache, muscle aches, arthritis, backache, toothaches, colds, and fevers. Learn how to calculate the correct dose of paracetamol for children and adults based on their weight and age. Find out the uses, side effects, contraindications and maximum limits of paracetamol for pain and fever relief. The optimal dosing for children (1 month to 12 years) is 15 mg per kg , which can be given every four to six hours as required, with no more than four doses in 24 hours. Requirements for medicines containing paracetamol In Australia, medicines containing paracetamol must: contain clear dosing instructions contain warnings for safe use Calculate the safe dose of paracetamol for infants and children based on their weight, using different formulas and solutions. Learn about the dosing guidelines, precautions and risks of paracetamol overdose.