Reading the Medicine Label
A person reads the label on a box of cold-and-flu tablets: "Adults: 2 tablets every 4 to 6 hours. Do not exceed 8 tablets in 24 hours. Do not take with other paracetamol products. May cause drowsiness; avoid driving."
They also have a headache tablet whose label says each tablet contains 500 mg paracetamol, and the safe daily maximum for paracetamol is 4000 mg. The person plans to take the flu tablets at 8 am, 12 noon, 4 pm and 8 pm, two tablets each time, and to take two headache tablets at 10 am for a bad headache.
1. Is the person's planned flu-tablet schedule within the label's limits?
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Count the doses: four times a day × 2 tablets = 8 tablets. The label says do not exceed 8 in 24 hours, so 8 is exactly at the limit, not over it.
Check the gap: 8 am to 12 noon is 4 hours; 12 to 4 pm is 4 hours; 4 to 8 pm is 4 hours. The label allows every 4 to 6 hours, so the spacing is acceptable.
Answer: Yes, the flu schedule sits exactly on the maximum. It is allowed but leaves no room for extra doses.
2. What is the danger in adding the two headache tablets at 10 am, and what should the person do?
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The label warns: "Do not take with other paracetamol products." The headache tablets contain paracetamol (500 mg each). Two tablets = 1000 mg.
We do not know how much paracetamol is in each flu tablet from this label, but the warning alone tells us not to combine them. Taking both risks going over the 4000 mg daily limit and harming the liver.
Answer: The person should not take the headache tablets at the same time as the flu tablets. They should choose one product, or ask a pharmacist which is safe. The drowsiness warning also means they should not drive after either.