In choosing treatment for the acne, you didn't do anything wrong. You were looking for a solution to a problem, and you made the best choice that you knew how to make. That it resulted in another problem doesn't mean that you did anything wrong.

Apparently, this guild is not helping you, right? Is it telling you anything valid that you wouldn't know without it? Is it motivating you to do something about the current problem?

You can't go back and choose to live with the acne in order to avoid the liver problems, right? If you could, maybe you would be second-guessing that or feeling guilty for not doing anything about it.

So what options are you left with now? Deal with the current situation as effectively as possible, or ignore it, or put your energy into guilt and worry. Anything I'm missing?

If you are not doing anything wrong, keep on doing what you are doing.