The purpose of this pilot research study is to test whether certain components of the
marijuana plant, known as "cannabinoids", may help to reduce symptoms in patients with OCD.
Specifically, patients enrolled in the study will smoke marijuana containing different
concentrations of 2 different cannabinoids, THC and CBD. Both of these agents act on the
brain's "endocannabinoid system," which has been hypothesized to play a role in OCD. Neither
compound is currently FDA-approved for treating OCD.