Taking two Dolo 650 tablets at once is not recommended as it exceeds the maximum daily dosage of 4000 mg per day. However, if you accidentally took two tablets, there is no need to worry as it is unlikely to cause any harm. It is important to note that taking large doses of Dolo 650 can be harmful to the liver and kidneys, especially if you have pre-existing liver or kidney disease. If you experience any symptoms such as severe nausea, vomiting, headache, or dizziness, you should visit a nearby clinic. It is also important to follow the prescribed dosage and not to discontinue the medication without consulting a doctor.