Table 3.

Beneficial and undesirable effects of e-cigarettes: open-ended comments from ecigarette users

	Number of comments
Beneficial effects (total from two open-ended fields)	134
Improves breathing and respiration	31
Less cough, less expectoration, fewer sore throats	23
Helps to quit smoking	20
Improves health and physical fitness	17
Improves sense of taste and smell	11
Does not cause unpleasant odours or bad breath	10
Helps to reduce cigarette consumption	7
Sleeps better	4
Less craving for cigarettes	4
Cost	4
Pleasure of smoking the e-cigarette	2
Useful device to administer other medications to the bronchia or lung	1
Undesirable effects (total from two open-ended fields)	61
Dry mouth and throat	16
Vertigo, headache or nausea	7
Bad taste	4
Weight gain	3
Technical problems (batteries)	3
Difficult to accurately control dose of nicotine	3
Cost	3
No undesirable effects	13
Miscellaneous comments	9