Eli5 – why do you take antibiotics as a course and not all at once?

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I’ve just started an antibiotics course which is 4 times a day for 10 days and that got me wondering if they would be just as effective if I took them all and why not.

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Anonymous 0 Comments

Pharmacist here. When thinking about why you have to do something for a medication the answer is almost always safety and efficacy.

Medications are studied and certain protocols are followed for the study. Your doctor knows a treatment is likely to be effective if that particular protocol is followed. This means the medication will be effective.

All medications can cause side effects. If you have too much of a medication it’ll be more likely to cause side effects. You will naturally filter out all medications in your body eventually, but if you take too much of something your body have a harder time doing so. This means there’s a lot of medication in your body which means you’re more likely to experience side effects. That’s the safety aspect of it.

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