Semisolid Preparations for External Use
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Questions and Answers

-Semisolid preparations intended for external applications to the skin or mucous membranes.

-May be medicated or not.

OINTMENTS

Unmedicated Ointments • Used for the physical effects they provide as: ___,, &

PEL

Ointment bases are generally classified by the U.S. Pharmacopeia into four groups:

  • Oleaginous Bases (correct)
  • Absorption Bases (correct)
  • Water-removable Bases (correct)
  • Water-soluble Bases (correct)

    • Oleaginous bases are also termed as ________

    <p>HYDROCARBON BASES</p> Signup and view all the answers

    Which of the following are true regarding oleaginous bases applied to the skin? (Select all that apply)

    <p>They have an emollient effect.</p> Signup and view all the answers

    What is true about oleaginous bases and their ability to incorporate water and aqueous preparations?

    <p>They may be incorporated, but with some difficulty.</p> Signup and view all the answers

    Which of the following substances is used as a levigating agent (powdered) in oleaginous bases?

    <p>Liquid Petrolatum</p> Signup and view all the answers

    What is Petrolatum, USP?

    <p>A purified mixture of semisolid hydrocarbons obtained from petroleum</p> Signup and view all the answers

    Petrolatum, USP has an unctuous mass and varies in color from _____

    <p>yellowish to light amber</p> Signup and view all the answers

    Petrolatum is also known as ______

    <p>YELLOW PETROLATUM, PETROLEUM JELLY</p> Signup and view all the answers

    Petrolatum, USP melts at ____

    <p>38 to 60 °C</p> Signup and view all the answers

    Purified mixture of semisolid hydrocarbons from petroleum that has been wholly or nearly decolorized.

    <p>WHITE PETROLATUM, USP</p> Signup and view all the answers

    White petrolatum is also known as _________

    <p>WHITE PETROLEUM JELLY</p> Signup and view all the answers

    Which of the following statements are true about White Petrolatum USP?

    <p>It is considered more esthetically pleasing than petrolatum.</p> Signup and view all the answers

    Which of the following describes Yellow Ointment USP?

    <p>It is also known as Simple Ointment.</p> Signup and view all the answers

    What are the components of the yellow ointment USP formulation?

    <p>Yellow Wax - Stiffening agent</p> Signup and view all the answers

    How does white ointment differ from yellow ointment?

    <p>By substitution of white wax and white petrolatum in the formula</p> Signup and view all the answers

    What is white wax primarily characterized by?

    <p>Bleached and purified yellow wax</p> Signup and view all the answers

    What is yellow wax obtained from?

    <p>The honeycomb of the bee Apis mellifera</p> Signup and view all the answers

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