So yeah, like the title says, I'm starting azathioprine (adding it to infliximab), and tonight is my second night taking it. I'm starting on 150mg (I'm a large human), and we're going to see how I tolerate it. For those of you who have tried it but couldn't tolerate it, when did you know? Was it immediate, or did it take some time before your body let you know that it wasn't agreeing with you? For those of you who have been taking it successfully, when did side effects (if any) start showing up?