How Antibiotic Helps People?

What is an antibiotic?  An antibiotic is a medicine that helps kill bad microorganisms in the body.  Can antibiotics kill a person?  They can kill if taken inappropriately.

What do they do to the stomach?  They may cause diarrhea and nausea.  How do antibiotics know which bacteria or microorganism to kill in the body?  They know how to selectively target the bacteria and kill it by going through the blood stream and attacking it.

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