 <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] . If you are self-treating, follow all directions on the product package. To prevent trouble sleeping, do not take this medication close to bedtime. If you have any questions, ask your doctor or pharmacist. Dosage is based on your age, medical condition, and response to treatment. Do not increase your dose or take this drug more often than directed. Guaifenesin may have a bitter taste. Swallow capsules and tablets whole. Scored tablets may be split for lower doses. Chewable tablets may be swallowed whole or chewed. Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion. If you are using the liquid form of this medication, carefully measure the dose using a special measuring device/spoon. Do not use a household spoon because you may not get the correct dose. If your liquid form is a suspension, shake the bottle well before each dose. Tell your doctor if your condition is accompanied by headache that doesn't go away, fever, severe sore throat, rash, or if it lasts, returns, 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. </s>