I had an initial bad reaction to budesonide (generic Entocort), or so I thought, anyways. I had mood swings, anxiety, and so on. Physical side effects, not so much. That said, looking back now, I'm not sure if it was actually the drug that upset me, or simply my anxiety over my diagnosis taking over and slipping into depression. Since my diagnosis 2 months ago, I took it for a week, freaked out and stopped... but then later took a very low dose (3mg vs. 9mg) and it didn't seem to upset me on a daily basis. I was still depressed and anxious from time to time, but I wasn't convinced it was the drug anymore. After starting a mild anti-anxiety/antidepressant medication a little over two weeks ago, I've been able to step up the medication in order to try it again. I'm tolerating it fine thus far, and as of today I'm stepping back up to the full dose (9mg).
Anyways, I figured I'd share this just because you should know that you're not the only person that's experienced something like this! However, I would agree that this is definitely the kinder, gentler alternative to Prednisone, and I haven't had any crazy physical side-effects. Hopefully when I taper it won't be so bad. Keep us updated on how you do.