For an adult weighing 80 kg, taking a full 500 mg tablet of Crocin (Paracetamol) is generally safe and appropriate unless your doctor advises otherwise. The usual adult dose is 500 mg to 1000 mg every 4 to 6 hours, not exceeding 4000 mg in 24 hours. Half a tablet (250 mg) is typically for children or those requiring a lower dose. Do not exceed the recommended dose and limit alcohol while taking this medicine. If you have liver disease or other health concerns, please consult your doctor before use.