Safrazine (Safra) is a non-selective, irreversible monoamine oxidase inhibitor (MAOI) of the hydrazine class that was introduced as an antidepressant in the 1960s. Safrazine and electroconvulsive therapy were shown to be effective in the treatment of antidepressant-resistant depressions (ARD) but had the drawbacks of the high incidence of moderate or severe adverse reactions and high relapse rates, respectively. The use of safrazine was discontinued.