is the portion of the original drug dose that reaches its site of action or that reaches a fluid in the body that gives the drug access to its site of action.

Question

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Bioavailability is the portion of the original drug dose that reaches its site of action or that reaches a fluid in the body that gives the drug access to its site of action. This is important because if a drug has low bioavailability, it may not be effective even if the correct dose is given, and a higher dose may be needed to achieve the desired therapeutic effect.

Is the Portion of the Original Drug Dose That Reaches