Patients w/ impaired kidney or liver functions. Severe liver damage may occur if max dose is exceeded: >4 g in 24 hr for adult; >5 doses in 24 hr for childn. Concomitant use w/ other paracetamol containing drugs, alcohol dependence (≥3 alcoholic drinks), existing liver disease, concomitant use of warfarin. Phenylketonuric. Pregnancy & lactation.