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Mystery #3Tier 2microbes antibiotics medicine

Why does the doctor tell you exactly how long to take antibiotics for?

After a few days on antibiotics you feel brilliant again, so surely you can stop taking the boring tablets? A grown-up will probably tell you to finish the packet. But here is something surprising: scientists have been arguing about that advice, and some of what people confidently say about it turns out not to be backed up. So what is really going on?

A full blister pack of red and yellow antibiotic capsules, a complete course of medicine.
Photo: Maksym Kozlenko · CC BY-SA 4.0 · via Wikimedia Commons

Your guess

Why do you think the doctor gives you a set number of days rather than just saying stop when you feel better?

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