Table 2.

Severity of Reported Adverse Events^a

	Ethambutol (n = 28)		Ethionamide (n = 36)
Adverse Event	Grade 1 (n = 24)	Grade 2 (n = 4)	Grade 1 (n = 29)	Grade 2 (n = 7)	Total Adverse Events (n = 64)
Vertigo/dizziness	8 (42)	0 (0)	11 (58)	0 (0)	19 (30)
Vomiting	4 (36)	0 (0)	6 (55)	1 (9)	11 (17)
Anxiety	0 (0)	2 (20)	2 (20)	6 (60)	10 (16)
Nausea	4 (50)	0 (0)	4 (50)	0 (0)	8 (13)
Arthralgia	3 (100)	0 (0)	0 (0)	0 (0)	3 (4)
Pain	2 (67)	0 (0)	1 (33)	0 (0)	3 (4)
Abdominal distention	1 (100)	0 (0)	0 (0)	0	1 (2)
Bloating	0 (0)	0 (0)	1 (100)	0 (0)	1 (2)
Cough	1 (100)	0 (0)	0 (0)	0 (0)	1 (2)
Disturbed menstruation	0 (0)	0 (0)	1 (100)	0 (0)	1 (2)
Fatigue	1 (100)	0 (0)	0 (0)	0 (0)	1 (2)
Headache	0 (0)	0 (0)	1 (100)	0 (0)	1 (2)
Insomnia	0 (0)	0 (0)	1 (100)	0 (0)	1 (2)
Myalgia	0 (0)	0 (0)	1 (100)	0 (0)	1 (2)
Polyuria	0 (0)	1 (100)	0 (0)	0 (0)	1 (2)
Yellow discoloration of skin	0 (0)	1 (100)	0 (0)	0 (0)	1 (2)

Data are presented as no. (row %).

^aThere were no grade 3 or 4 adverse events.