The effects of a medication or drug overdose vary, depending on factors such as the specific drug and the amount taken. The symptoms may vary from mild to severe, and may develop very quickly or over a number of days. Some common general symptoms include nausea, vomiting, diarrhea, abdominal pain, chest pain, a rapid heartbeat, breathing problems, confusion, seizures, and unconsciousness.
A large overdose may be life-threatening.
As well as short-term effects, overdose of some drugs may cause longer-term complications, such as liver or kidney damage. A drug overdose requires urgent medical treatment.
To ensure treatment is as effective as possible, it helps if medical staff know details such as the drug taken, the amount taken, and when it was taken