Parenteral administration is any administration that is not via the GI system, meaning oral or rectal. Parenteral means "around the enteral system."
Intravenous, subcutaneous, and intramuscular injections are all parenteral routes of administration. While inhalation would be considered parenteral in the strictest sense of the word, inhalation or aerosolization of medications are not usually considered parenteral, nor is topical administration.
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A non-parenteral drug is one that is administered orally or by inhalation. Examples would be swallowing a pill or using an inhaler. Parenteral drugs are administered by injection or via transdermal patch (applied directly to the skin).
Parenteral means out side the intesine.
Parenteral drug means the drug which is administered out side of the body..