Dang, sorry to hear about the relapse. Yes, it is important to read ingredients on the label for every supplement and medication. It's not easy to get rid of all the crap.
In clinical trials, patients were accepted who were on Entocort ONLY if they had been stable, at a consistent dosage of not more than 3 mg, for some time. The higher the Entocort dosage, the more likely it is that it will conflict with LDN. So if you are upping the dose right now, and in transition from a flare to stability, it might not be a good time to introduce LDN.
How long were you on Entocort at 9 mg? My daughter landed in the hospital, years ago, when she tried to taper off Entocort too soon. Even though she had been on 9mg for 4 weeks, 6 mg for 2 wks, 3 mg for 4 wks, she flared when she tried taking 3 mg every other day - it happened on the third of her "off" days.
I tend to favor the FDA-approved guideline of, at a minimum, 9 mg at up to 8 wks to induce remission, and then 6 mg for another 3 months to maintain it.