 <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]  as directed by your doctor, usually every 12 hours with a full glass of water. If you are self-treating, follow all directions on the product package. If you have any questions, ask your doctor or pharmacist. Dosage is based on your age, medical condition, and response to treatment. Do not take more than 2400 milligrams in 24 hours. Do not increase your dose or take this drug more often than directed. Swallow the tablets whole. Do not crush or chew the tablets. Doing so can release all of the drug at once, increasing the risk of side effects. Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion. Tell your doctor if your condition returns, or if it is accompanied by a headache that doesn't go away, fever, severe sore throat, rash, or if it lasts or gets worse after 7 days. These may be signs of a serious medical problem. Get medical help right away if you think you may have a serious medical problem.The side effects of Guaifenesin Oral: Nausea or vomiting may occur. If either of these effects last or get worse, tell your doctor or pharmacist promptly. If your doctor has directed you to use </s>