 <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]  more than 2 doses in 24 hours. Do not increase your dose or take this drug more often than directed. Do not crush or chew this medication. Doing so can release all of the drug at once, increasing the risk of side effects. Also, do not split the tablets unless they have a score line and your doctor or pharmacist tells you to do so. Swallow the whole or split tablet without crushing or chewing. Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion. Improper use of this medication (abuse) may result in serious harm (such as brain damage, seizure, death). Do not increase your dose, take it more often, or use it for a longer time than directed. Tell your doctor if your cough returns, or if it is accompanied by 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 Dextromethorphan-Guaifenesin Oral: Dizziness, drowsiness, nausea, and vomiting may occur. If any of these </s>