Hi @mmr1984, welcome to the Transplants group. A number of kidney transplant members including @guidant07 @threerrr3 @parojulie and @rosemarya have been prescribed azathioprine and may be able to share experiences between generic vs brand versions.

You may also be interested in this blog post:
- Immunosuppression: Watching For and Managing Side Effects https://connect.mayoclinic.org/page/transplant/newsfeed-post/immunosuppression-watching-for-and-managing-side-effects/

@mmer1984, have you been using Imuran post kidney transplant and are now considering using the generic form of azathioprine? When did you have your transplant?