Table 2.

Substances used at the day of the non-fatal overdose events among people who inject drugs. El Cuete IV, Tijuana, Mexico, 2011–2017 (n=671).

Substances	N=326	%
One substance
Heroin*	157	48.16
Methamphetamine	5	1.53
Crocodile	2	0.61
Alcohol	2	0.61
Two substances
Heroin and methamphetamine*	88	26.99
Heroin and tranquilizers	20	6.13
Heroin and cocaine	9	2.76
Heroin and alcohol	6	1.84
Heroin and methadone	1	0.31
Methamphetamine and crocodile	1	0.31
Three or more substances
Heroin, methamphetamine and tranquilizers**	16	4.91
Heroin, methamphetamine and alcohol	7	2.15
Heroin, methamphetamine, tranquilizers and alcohol	4	1.23
Heroin, methamphetamine and cocaine	3	0.92
Heroin, cocaine and barbiturates	1	0.31
Heroin, cocaine and tranquilizers	1	0.31
Heroin, cocaine and alcohol	1	0.31
Heroin, tranquilizers and methadone	1	0.31
Heroin, methamphetamine, prescription opioids and PCP	1	0.31

^*One case with marijuana;

^**Two cases with marijuana.

Crocodile or krokodil is a mixture of several substances that is used as a cheap substitute for heroin.