First-Pass Effect · Pharmacology

Which dosage adjustment may be necessary for drugs with a strong first-pass effect?

  1. Higher oral dose
  2. Lower oral dose
  3. Smaller injection dose
  4. Reduced frequency of dosing
Show answer and explanation

Correct answer: Higher oral dose

When a drug undergoes significant first-pass metabolism, much of the drug is inactivated before reaching systemic circulation. Therefore, a higher oral dose may be required to achieve therapeutic levels.

Difficulty: Medium Question 15 of 20

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