Table 2: Use and non-medical use of prescription drugs ().

Prescription drugEver Ever used non-Ever used in combination with heroin, methadone, or buprenorphine/

Benzodiazepines62 (85%)59 (81%)59 (81%)
Pregabalin26 (36%)15 (21%)17 (23%)
z-drugs62 (85%)44 (60%)46 (63%)
Promethazine50 (69%)9 (12%)25 (34%)
Hydroxyzine45 (62%)9 (12%)20 (27%)
Alimemazine52 (71%)11 (15%)30 (41%)
Prescription opioids60 (82%)49 (67%)41 (56%)
Prescription stimulants24 (33%)14 (19%)13 (18%)

values for pregabalin and promethazine; for hydroxyzine and alimemazine.
values for z-drugs; for alimemazine; and for promethazine and hydroxyzine.
values for pregabalin; for prescription stimulants; for z-drugs; for prescription opioids; for alimemazine; and for promethazine and hydroxyzine.