Nonmedical Use of Antihistaminergic Anxiolytics and Other Prescription Drugs among Persons with Opioid Dependence

Table 4

Administration of prescription drugs (not mutually exclusive) among opioid maintenance treatment patients. Presented as n (% of lifetime users of each prescription drug).

Route of administration	Benzodiazepines	Pregabalin	z-drugs	Promethazine	Hydroxyzine	Alimemazine	Prescription opioids	Prescription stimulants
Oral consumption	59/62 (95%)	26/26 (100%)	61/62 (98%)	45/50 (90%)	42/45 (93%)	49/52 (94%)	55/60 (92%)	19/24 (79%)
Snorting	2/62 (3%)	0	1/62 (2%)	0	0	0	4/60 (7%)	0
Injection	10/62 (16%)	0	1/62 (2%)	0	0	0	13/60 (22%)	3/24 (13%)
Smoking	5/62 (8%)	0	0	0	0	0	6/60 (10%)	0
Other routes	0	0	1/62 (2%); not specified	0	0	0	1/60 (2%); mixed with tea	1/24 (4%); chewed

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