I think you should give Geodon a try. I don't think you have a hugely increased risk of side effects because your grandma did; the elderly are much more at risk of all kinds of problems and sensitives to meds that don't show up in younger people. Geodon is usually pretty easy to deal with for most people and if I had a choice between it and zyprexa I'd go for the Geodon (well, I wouldn't as I had a bad reaction but that was really rare for that drug).

Regarding zyprexa I only took it a few weeks and it did nothing for me but it's worth trying since it works for most people. I've controlled my weight on clozapine by watching what I'm eating and snacking on veggies and fruits more than anything else. I've even lost 25 lbs. So while the weight gain with it (or clozapine) is a real risk it isn't a certainty and can be avoided sometimes at least.

Generally you have to have failed on pretty much everything before they consider clozapine because it has killed people (agranulocytosis). I started to list what I'd tried before going on it but I can't remember the whole list right now. I can say that the only things I haven't tried are saphris, rexulti, vraylar (have you tried that one?) which weren't out when I went on clozapine and invega which I am considered allergic to because I'm allergic to risperdal. I've also tried at least one typical and a whole lot of mood stabilizers (all of those typically used except tegretol). I'd been on well over 40 meds in 70 combinations before clozaril became the only remaining choice.

I don't know what else you haven't tried but would suggest not giving up on something for a side effect you aren't sure you'd have. Another one to look at is called loxapine. It is older but not exactly an atypical and not exactly a typical so it may be ok with your pdoc's rules. It is weight neutral, not that sedating and I found it helpful.

Finding meds that work is so hard. I hope you and your pdoc work something out.