I know a woman who is manic depressive and is on prescription anti-anxiety drugs and anti-depressants and smokes majijuana all day. She has he attention span of a child and can not sit still for more than a few minutes. Lately she acts almost like someone strung out on coccaine but i know she is not using. Can this be because of mixing her prescription drugs with marijuana or can specific anti-depressants cause such serious side effects?