Which of the following is an advantage of parenteral drug administration?
It has a rapid onset of action
It bypasses first-pass metabolism
It is useful for drugs that are poorly absorbed or unstable in the gastrointestinal tract
All of the above
The Correct Answer is D
Parenteral drug administration has a rapid onset of action because drugs are injected directly into the bloodstream or tissues. This route of administration bypasses first-pass metabolism in the liver and is useful for drugs that are poorly absorbed or unstable in the gastrointestinal tract.
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Related Questions
Correct Answer is B
Explanation
Intravenous administration is a type of parenteral administration because it involves injecting drugs directly into the bloodstream using a needle or catheter.
a. Oral administration is not considered parenteral because it involves swallowing drugs and absorbing them through the gastrointestinal tract.
c. Sublingual administration is not considered parenteral because it involves placing drugs under the tongue and absorbing them through the mucous membranes.
d. Topical administration is not considered parenteral because it involves applying drugs to the skin or mucous membranes.
Correct Answer is D
Explanation
Blood flow to the injection site, solubility, and size of drug molecule can all affect absorption of parenterally administered drugs. For example, drugs may be absorbed more readily if they are highly soluble in blood or if they are small enough to pass easily through capillary walls. Blood flow to the injection site can also affect absorption by altering the rate at which drugs are delivered to the absorption site.
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