NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

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Ace your North American Pharmacist Licensure Examination (NAPLEX) with our comprehensive practice test. Features include interactive flashcards, multiple-choice questions, with detailed hints and explanations. Fast-track your pharmacy career today!

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Creams can be characterized as what type of emulsions?

Liquid at refrigerated temperatures
W/O or O/W
Aqueous only
Gel at room temperature

The correct answer is: W/O or O/W

Creams are a type of topical skin products that are usually a mixture of two immiscible (not mixable) liquids, oil and water. In an emulsion, one liquid is dispersed in the form of small droplets into the other liquid. In creams, oil can be dispersed in water (O/W) or water can be dispersed in oil (W/O). Option A is incorrect because creams can be liquid at room temperature or refrigerated temperatures, depending on the specific formulation. Option C is incorrect because creams can contain both water and oil. Option D is incorrect because the consistency of creams can vary and they may not always be in gel form at room temperature.