A Patient Has Taken Five or Six Nitroglycerin Tablets Per

A patient has taken five or six nitroglycerin tablets per day to prevent chest pain for more than 2 years.His health care provider has recommended that he decrease the amount of medication he takes a day to no more than three tablets.This patient should reduce his medication according to which timetable?

A) Stop taking the medication all at once.
B) Take one fewer tablet every 2 months.
C) Gradually cut down over a period of time.
D) Take the medication once a week.