A recent epidemiological survey of more than 700 Brazilian medical students uncovered new evidence on a previously reported pattern of the use of the "lanca perfume" inhalant drug (a mixture of ether, chloroform, and aromatic scents). A multiple logistic regression used to hold constant an array of suspected correlates disclosed a moderately strong association between the use of marijuana and the use of lanca (adjusted odds ratio, OR = 5.6; p less than .01). Lanca, which can be toxic and potentially deadly, was almost never used by students who had never consumed alcoholic beverages. The article suggests that this pattern of associations can be used to guide the planning of programs to reduce the occurrence of illicit use of pharmaceutical compounds by medical students in Brazil. Tables, references