Hi, I've been prescribed Azathioprine but have had horrible vomiting each time I take it recently (about three hours into taking it. I get hot flushes, chills, cramps and then vomit). I tolerated it really well for five months, then got Norovirus and now can't tolerate it. This has happened three times now and I really don't feel like I can try it again. Has anyone got any advice please?