Paracetamol should be used with caution in adults and adolescents weighing less than 50 kg.
Do not exceed the stated dose.
If high fever or signs of secondary infection occur or if symptoms persist for longer than 3 days, a physician should be consulted.
In general, medicinal products containing paracetamol should only be taken for a few days without the advice of a physician or a dentist and not at high doses.
Patients should be advised not to take other paracetamol containing products concurrently.
Paracetamol should be used with caution in cases of dehydration and chronic malnutrition.
Care is advised in the administration of paracetamol to patients with severe renal or severe hepatic impairment (see section 4.2) or severe haemolytic anaemia. The hazards of overdose are greater in those with non-cirrhotic alcoholic liver disease. In patients with alcohol abuse the dose has to be reduced. The daily dose should not exceed 2 grams in such cases.
Patient groups at increased risk of toxic liver effects
Elderly patients, infants, patients with chronic nutritional disorders, patients who are underweight, patients with liver or renal disease, patients taking excess alcohol or patients using medicines which are enzyme inducers are more likely to develop liver toxicity from paracetamol use. Even relatively small overdoses of paracetamol in these patients can cause serious liver toxicity which can be fatal (see sections 4.4 and 4.9).
Caution should be exercised when paracetamol is used in combination with CYP3A4 inducers or use of substances that induce liver enzymes, such as rifampicin, cimetidine or antiepileptics (e.g. glutetimmide, fenobarbital or carbamazepine).
Gilbert`s syndrome (Meulengracht`s disease)
Paracetamol is metabolized by enzymes which are deficient in some people with Gilbert's syndrome. Therefore, a subset of people with Gilbert's syndrome may have an increased risk of paracetamol toxicity.
Other notes:
Prolonged use of analgesics for headaches can make them worse. If this situation is experienced or suspected, medical advice should be obtained and treatment should be discontinued. The diagnosis of medication overuse headache (MOH) should be suspected in patients who have frequent or daily headaches despite (or because of) the regular use of headache medications.
In general terms, the habitual intake of analgesics particularly on combination of several pain-relieving active substances, may lead to permanent renal damage with the risk of renal failure. Therefore it must be avoided.
Abrupt discontinuation following long-term, high dose, incorrect use of analgesics may lead to headaches, fatigue, muscle pain, nervousness and autonomic symptoms. These withdrawal symptoms resolve within a few days. Until this time, further intake of analgesics must be avoided and not restarted without medical supervision.
Patients should be advised accordingly.