Oral administration is a route of administration where a substance is taken through the mouth. Per os abbreviated to P.O. is sometimes used as a direction for medication to be taken orally. Many medications are taken orally because they are intended to have a systemic effect, reaching different parts of the body via the bloodstream, for example.
referenceFull Form | Category |
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per os - by mouth or orally | Medical |
by mouth (per os) [Lat.] | Medical |
by mouth | Medical |
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