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

Your body does its best to eliminate stuff that enters it. You could compare it to coffee; if you drink ten cups of coffee spread out through the week, your caffeine levels will not experience extremely high peaks but will somewhat stay within a certain interval. If you were to drink ten cups of coffee in ten minutes’ time, you will experience an extreme caffeine peak, but the effect won’t last all week long. Taking big amounts of antibiotics at once can be both harmful for your body (similar to caffeine and basically any substance if you take too much or it), but can also be less helpful in battling bacteria. The antibiotics have to be able to reach the bacteria to eliminate them, and the chance of that happening is bigger if there is a constant presence of antibiotics over a slightly longer period of time than when you have a truckload of antibiotics in you for a short amount of time.

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