Background. Alcohol and drugs use were assessed in a nationwide one ye
ar suicide study in Finland. Method. Alcohol and drugs use were analys
ed in 1348 suicides. 96.5% of all suicides in the study year. Relative
suicide risks for drugs were defined by relating the number of suicid
es committed by use of various drugs to drug availability. Results. Al
cohol was detected twice as often in men as in women; the opposite was
the case with drugs. The drugs most commonly used for suicide were ne
uroleptics and antidepressants, which were, in 74.3% and 77.4% of the
cases, respectively, the victim's own prescribed drugs. Antidepressant
s were found in 19.0% of women and only 4.8% of men. Relative suicide
risk for antidepressants varied substantially between different compou
nds. Conclusions. Undertreatment of depression is a challenge for suic
ide prevention. Those who commit suicide by antidepressants use their
own drugs. Relative suicide risk for a drug should be considered when
choosing treatment for depressive patients.