Which of the following statements are true regarding nicotine gum?
L. Initially, patients should chew one piece of gum per hour.
II. It is encouraged to swallow saliva while chewing nicotine gum to aid absorption.
III. Patients are encouraged to drink coffee while chewing nicotine gum.
IV. Patients must stop smoking before starting to use the gum.
II, IV only
III only
1, IV only
L, II, III, IV