 <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]  use a household spoon because you may not get the correct dose. There are many brands and forms of pseudoephedrine available. Some tablets should be swallowed with plenty of water. Check your product package for specific directions. 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, or rash, or if you think you may have a serious medical problem, get medical help right away.The side effects of Nexafed Oral: Nausea, vomiting, trouble sleeping, dizziness, headache, or nervousness may occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly. Stop taking this medication and tell your doctor promptly if you have dizziness, nervousness, or trouble sleeping. If your doctor has directed you to use this medication, remember that </s>