Which organs does ketamine damage?

My best friend and I were using heavily starting a few years ago. Luckily I quit based on all the harm. I advise her to do so because how harmful this drug is. I’ve been telling her about the bladder and liver damage. She almost doesn’t believe that it harms anywhere besides bladder. She also thinks that people getting k-bladder are extremely unlucky ones and that it happens to only a few people. I will share this post with her so she can read herself about all the damages. And please give her your own advises. She really needs a community