The medications most commonly administered by means of troches include:

A. nitroglycerin
B. nicotine
C. glucose
D. cough suppressants

d
Rationale: Troches are commonly used to administer cough suppressants. Nitroglycerin is usually administered sublin-gually. Nicotine is commonly administered by a transdermal patch. Glucose is used for the treatment of diabetes, which commonly does not involve troches.