Pharmaceutics: Drug Absorption and Formulations Quiz
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Questions and Answers

What types of emulsions can creams be classified as?

  • Water-based or oil-based
  • Oily or aqueous (correct)
  • Solid or liquid
  • Viscous or non-viscous
  • What is the term 'cream' reserved for in pharmacy?

  • External preparations (correct)
  • Internal preparations
  • Liquid preparations
  • Inhalation preparations
  • What type of emulsifying agents are used in water-in-oil creams (W/O)?

  • Natural origin, e.g. beeswax (correct)
  • Polyethylene glycol
  • Synthetic waxes
  • Mineral oils
  • According to the British Pharmacopoeia (BP) definition, what are creams intended for?

    <p>External use only</p> Signup and view all the answers

    Which type of creams are the best bases to use for rapid absorption and penetration of drugs?

    <p>Oil-in-water creams (aqueous creams)</p> Signup and view all the answers

    What is the purpose of levigation in the preparation of creams, ointments, pastes, and gels?

    <p>To add insoluble coarse powders into the base through wet grinding</p> Signup and view all the answers

    In the compounding procedure for creams, when are the components of the aqueous phase mixed?

    <p>After cooling the components of the oily phase to 60°C</p> Signup and view all the answers

    What is the advantage of water-in-oil creams over oil-in-water creams?

    <p>They provide an oily barrier that reduces water loss from the stratum corneum</p> Signup and view all the answers

    What is used as emulsifying agents in the preparation of oily creams?

    <p>Wool fat, wool alcohol, beeswax, and calcium soaps</p> Signup and view all the answers

    What is the main purpose of storing and supplying creams in well-closed containers?

    <p>To prevent microbial growth and contamination</p> Signup and view all the answers

    What factors influence percutaneous absorption?

    <p>Physiological factors and physicochemical factors</p> Signup and view all the answers

    Which type of creams are the best bases for rapid absorption and penetration of drugs?

    <p>W/O creams</p> Signup and view all the answers

    What is the main function of the skin in relation to chemicals?

    <p>Limiting the passage of chemicals into and out of the body</p> Signup and view all the answers

    Which type of oils result in better drug absorption compared to mineral oils?

    <p>Animal and vegetable oils</p> Signup and view all the answers

    What are the ideal properties of semi-solid dosage forms based on?

    <p>Physical, physiological, and application properties</p> Signup and view all the answers

    Which of the following is NOT a topic covered in the 'Aerosol, Ophth, Parenteral, Supp, and Semi-Solid Dosage Forms' student handout?

    <p>Formulation of parenteral dosage forms</p> Signup and view all the answers

    What is the main purpose of levigation in the preparation of semi-solid dosage forms?

    <p>To reduce the particle size of insoluble solids</p> Signup and view all the answers

    Which of the following is NOT an example of a semi-solid dosage form?

    <p>Suspension</p> Signup and view all the answers

    What is the purpose of storing creams in well-closed containers?

    <p>To prevent microbial contamination</p> Signup and view all the answers

    In which type of emulsion are water-in-oil creams classified?

    <p>Type II emulsion</p> Signup and view all the answers

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