Thanks all - just to clarify, Brendawmms, my DH was pushing for them to take the advice of the psychiatrist and take the antipsychotics, despite the side effects. Our daughter was on them for 2 years and they helped her (different problem, however) - and the side effects were bearable. The benefits outweighed the disadvantages. However, my brother and SiI L are convinced that antipsychotics will worsen his condition and turn him into a zombie
. They've asked us not to say anything further on the subject so we won't, but it's very frustrating!
What you say about the legal position re driving confirms what I thought - my Si I L doesn't want him to drive and believes it's unsafe, by brother doesn't agree. Sigh.
I hope he never touches the stuff again. But my brother actually grew his own for personal use until recently, and my other brother, a neurologist, smokes it recreationally from time to time (!) - I've never been impressed by any of that, I have to say. When I experimented with it myself as a student during the early 70s, it did nothing at all for me, so I didn't see the point of it at all - I must have been the only one NOT to get high. It wasn't really until I read of research proving its dangers, and saw the effects on DD2 (it worsened her mental health - she is now very firmly anti-cannabis, thank goodness) - that my position became more polarised.
I wish he'd learn meditation instead. Legal, safe, beneficial - what's not to like? 