They're generic warnings - if you have specific needs associated with your treatment of your illness, that's not on the regulation board, theb onus is on you and the professionals treating you.

There are studies that suggest that there might be a link between schizophrenia and cannabis consumption, namely that it can exacerbate the symptoms. Might and Can be operative words.

It can also exacerbate the symptoms of GAD - generalized anxiety disorder. But it's on the person suffering from those symptoms to avoid those substances.

Take personal responsibility for your treatment.