Well trilafon is an anti psychotic. But i was prescribed a very small amount.. 1 - 2 mg, so its not used as an antipsychotic but rather an anti anxiotic.
Yeah, i would think marijuana wood make your OCD worse because weed makes you exagerrated and because you arent clearheaded, you will have to work harder at your rituals to insure that you did a good job because you aren't sure if you did them right since you are high. Also it distorts good judgement and common sense, so if you are serious about treating your OCD you should quit, its more harmful than helpful. Unfortuantely I've never heard of Trilafon, so I can't answer your questions pertaining to that, although I'm sure they don't make most, if any, drugs that are compatible with street drugs, lol.