Apriso depletes folic acid. It would help to take activated folic acid called methylfolate. This bypasses conversion in the body, which is broken in 10-30% of people.

The ALA...is it r-lipoic stabilized? If not 100mg is not enough.
Switch to R-lipoic stabilized (the new active soluble form) and 100mg a day is enough. If you use the old mixture ALA you would need at least 600mg a day or more. It must be taken on an empty stomach too.

The B12 should be methylcobalamin, the active form. Same reason as the methylfolate. Ideally it is best to have testing before starting to see if you are really low. This information is useful before beginning. This has to be taken on an empty stomach too.

New research suggests that selenium doses should be lower. 100mcg a day is typically the new suggestion.

Steroids like budesonide deplete many nutrients. So it is a good idea to do the B complex. But perhaps 50mg a day is enough.
This steroid also depletes potassium, zinc and magnesium.
Potassium you can get by choosing foods high in this mineral.
Same with magnesium. But some people soak in epsom salts, to enable magnesium better. If you choose a supplement, AVOID OXIDE form, and go for a chelate or SlowMag, at 1/2 the RDA daily... which is 350mg elemental a day.
This is my magnesium thread:
http://neurotalk.psychcentral.com/thread1138.html
You'll see it is a huge topic.

I think people with a mild colitis should try going sugar and fructose free. Fructose causes inflammation of the bowel, in 1/3 of adults in the US. Also carrageenan a common additive in many foods including dairy products is thought to irritate the bowel.

People taking steroids can also get elevated blood sugars. This can lead to PN and should be tested out. Steroids because of this blood sugar effect can flare Candida yeast in the GI tract and on the skin.