 <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]  not increase your dose or take this drug more often than directed. Do not take more of this medication than recommended for your age. If you are using the suspension (liquid), shake the bottle well before each dose. Use a medication-measuring device or spoon to carefully measure the dose. Do not use a household spoon because you may not get the correct dose. Take the capsules or tablets with a full glass of water. Swallow whole. Do not crush or chew the capsules or tablets. Doing so can release all of the drug at once, increasing the risk of side effects. There are many brands and forms of pseudoephedrine available. Read the dosing instructions carefully for each product because the amount of pseudoephedrine may be different between products. Do not take more pseudoephedrine than recommended. Caffeine can increase the side effects of this medication. Avoid drinking large amounts of beverages containing caffeine (coffee, tea, colas), eating large amounts of chocolate, or taking nonprescription products that contain caffeine. If your symptoms do not improve after 7 days, if they worsen or return, if you develop a headache that doesn't go away, fever, rash, or if you think you may have a serious medical problem, get medical help right </s>