TABLE 5.

Side Effects Experienced by Both Current and Previous Cannabis Users

	Mild and Tolerable Side Effects		Severe or Intolerable Side Effects
	Current Users	Previous Users	Current Users	Previous Users	P*
Increased appetite	62 (68%)	40 (70%)	7 (8%)	0 (0%)	0.54
Dry mouth	59 (64%)	31 (54%)	4 (4%)	1 (2%)	0.13
Drowsiness or sedation	50 (55%)	33 (58%)	3 (3%)	1 (2%)	0.87
Memory impairment	30 (33%)	17 (30%)	1 (1%)	2 (4%)	>0.99
Lack of energy or fatigue	26 (29%)	20 (35%)	5 (5%)	0 (0%)	0.90
Dehydration	19 (21%)	10 (18%)	2 (2%)	0 (0%)	0.54
Confusion	18 (20%)	9 (16%)	1 (1%)	0 (0%)	0.52
Dizziness	16 (17%)	9 (16%)	0 (0%)	0 (0%)	>0.99
Bad taste in mouth	15 (16%)	12 (21%)	2 (2%)	3 (5%)	0.30
Diarrhea	14 (15%)	8 (14%)	2 (2%)	0 (0%)	0.83
Anxiety	14 (15%)	17 (30%)	1 (1%)	1 (2%)	0.042
Eye irritation	13 (14%)	6 (11%)	0 (0%)	1 (2%)	0.81
Respiratory complaints	9 (10%)	3 (5%)	0 (0%)	3 (5%)	>0.99
Racing heart/palpitations	9 (10%)	5 (9%)	0 (0%)	2 (4%)	0.79
Paranoia	9 (10%)	9 (16%)	0 (0%)	2 (4%)	0.14
Gastrointestinal irritation	9 (10%)	5 (9%)	0 (0%)	0 (0%)	>0.99
Depressed mood	9 (10%)	6 (11%)	1 (1%)	0 (0%)	>0.99
Nausea/vomiting	8 (9%)	3 (5%)	2 (2%)	0 (0%)	0.37
Sleep disturbance	7 (8%)	4 (7%)	2 (2%)	1 (2%)	>0.99
Constipation	6 (7%)	3 (5%)	1 (1%)	0 (0%)	0.74
Sweating	5 (5%)	3 (5%)	1 (1%)	1 (2%)	>0.99
Headaches	5 (5%)	5 (9%)	2 (2%)	0 (0%)	0.77
Allergies	4 (4%)	1 (2%)	0 (0%)	0 (0%)	0.65
Shaking/tremor/poor movement control	3 (3%)	3 (5%)	0 (0%)	1 (2%)	0.43
Decreased appetite	3 (3%)	2 (4%)	1 (1%)	0 (0%)	>0.99
Panic attack	2 (2%)	1 (2%)	0 (0%)	1 (2%)	0.64
Nasopharyngeal complaints	2 (2%)	3 (5%)	1 (1%)	0 (0%)	0.68
Cannabis hyperemesis	2 (2%)	2 (4%)	1 (1%)	0 (0%)	>0.99
Hallucinations	1 (1%)	4 (7%)	0 (0%)	0 (0%)	0.072
Delusions	0 (0%)	6 (11%)	1 (1%)	0 (0%)	0.014

Number of respondents; current users = 89–92; previous users = 56–57.

*P value represents contingency test between current and previous users of all side effects experienced (severe and mild combined) using a χ ² analysis or Fisher’s exact test where n < 20.