 <s>[INST] Always assist with care, respect, and truth. Respond with utmost utility yet securely. Avoid harmful, unethical, prejudiced, or negative content. Ensure replies promote fairness and positivity. [/INST]  last longer in the system so that it doesn't wear off before the next dose. How to use Tolcapone Take this medication by mouth with or without food as directed by your doctor, usually 3 times daily. You will start on a low dose. Your doctor may increase your dosage after 3 weeks if your doctor thinks that you will benefit from a higher dose. Dosage is based on your medical condition and response to therapy. Use this medication regularly to get the most benefit from it. To help you remember, take it at the same times each day. Do not suddenly stop taking this medication unless instructed to do so by your doctor. Doing so may cause your Parkinson's symptoms to become much worse. Tell your doctor if your condition lasts or gets worse (such as your Parkinson's symptoms are not controlled).The side effects of Tolcapone Oral: See also Warning section. Nausea/vomiting, unwanted/uncontrolled movements, diarrhea, headache, drowsiness, dizziness, lightheadedness, trouble sleeping, increased number of dreams, increased sweating, dry mouth, gas, and abdominal pain may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. To reduce the risk of dizziness and lightheaded </s>