Bioavailability and Bioequivalence: Pharmacokinetic Methods

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Questions and Answers

What is the primary concern when the test product has levels substantially below those of the reference product?

  • Pharmaceutical product development
  • Variability of the test product
  • Therapeutic efficacy (correct)
  • Adequacy of the safety database

What is the primary regulatory concern when the test product generates plasma levels substantially above those of the reference product?

  • Adequacy of the safety database (correct)
  • Pharmaceutical product development
  • Variability of the test product
  • Therapeutic efficacy

What is the purpose of mapping individual dose–response or concentration–response curves?

  • To determine the recommended therapeutic dose
  • To assess the increase in plasma levels and potential additional risk (correct)
  • To evaluate the variability of the test product
  • To compare plasma levels of the test and reference products

What is the primary concern when the variability of the test product increases?

<p>Safety and efficacy (D)</p> Signup and view all the answers

What can be used in the absence of individual dose–response or concentration–response curve data?

<p>Population dose–response or concentration–response data (C)</p> Signup and view all the answers

What is the primary purpose of pharmacokinetic measurements in product development?

<p>To assess the release of the drug substance into the systemic circulation (A)</p> Signup and view all the answers

What is the purpose of acquiring population dose–response or concentration–response data over a range of doses?

<p>To demonstrate the increase in plasma levels would not be accompanied by additional risk (C)</p> Signup and view all the answers

What is the recommended study design for assessing bioequivalence between two products?

<p>Crossover study (C)</p> Signup and view all the answers

What is the primary assumption in a crossover study design?

<p>Physiological variables have less interoccasion variability (A)</p> Signup and view all the answers

What is the recommended method for analysis of nonreplicate or replicate studies to establish bioequivalence?

<p>Average bioequivalence (A)</p> Signup and view all the answers

What is the guidance for selecting subjects for in vivo bioequivalence studies?

<p>Subjects should represent the general population, taking into account age, sex, and race (A)</p> Signup and view all the answers

What is the age requirement for subjects recruited for in vivo bioequivalence studies?

<p>18 years of age or older (C)</p> Signup and view all the answers

What is the primary focus of pharmacokinetic measures in establishing BA and BE?

<p>Indicating release of the drug substance into the systemic circulation (D)</p> Signup and view all the answers

What is the primary reason for not measuring the active moiety at the site of action?

<p>It is not possible to access the site of action (A)</p> Signup and view all the answers

What is the relationship between the concentration of the active moiety and its metabolites in the systemic circulation?

<p>Some relationship exists between the efficacy and safety and concentration of the active moiety and its metabolites (D)</p> Signup and view all the answers

What is the order of preference for methods to document BA and BE?

<p>Pharmacokinetic, pharmacodynamic, clinical, and in vitro studies (C)</p> Signup and view all the answers

What is the statutory definition of BA and BE based on?

<p>Rate and extent of absorption of the active ingredient (C)</p> Signup and view all the answers

What is the purpose of using pharmacokinetic measures in establishing BA and BE?

<p>To indicate release of the drug substance into the systemic circulation (D)</p> Signup and view all the answers

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