Which dosage form is a hard or semisolid disk intended for local application in the mouth or throat?

Which dosage form is a hard or semisolid disk intended for local application in the mouth or throat?

• A. Troches or Lozenges
• B. Fluid extract
• C. Aerosol
• D. Semisolid cream

Answer: (A)

Hard or semisolid disks designed for local action in the mouth or throat are troches, commonly called lozenges. They are formulated to dissolve slowly in saliva, keeping the drug in contact with the oral mucosa to provide a local effect—such as soothing irritation, delivering an antiseptic, or providing a topical anesthetic—without requiring swallowing. The other forms don’t fit that purpose: a fluid extract is a liquid preparation; an aerosol is for inhalation; a semisolid cream is typically for skin or mucous membranes and not a dissolving disk retained in the mouth for local effect.

Hard or semisolid disks designed for local action in the mouth or throat are troches, commonly called lozenges. They are formulated to dissolve slowly in saliva, keeping the drug in contact with the oral mucosa to provide a local effect—such as soothing irritation, delivering an antiseptic, or providing a topical anesthetic—without requiring swallowing. The other forms don’t fit that purpose: a fluid extract is a liquid preparation; an aerosol is for inhalation; a semisolid cream is typically for skin or mucous membranes and not a dissolving disk retained in the mouth for local effect.