Supplementation of vitamins and minerals in the context of Inflammatory Bowel Disease (IBD) should be specific to existing deficiencies in each patient (1).
There is little evidence in this context for blind ingestion of over the counter supplements without a diagnostic correlate for, or at least reasonable clinical suspicion of a particular deficiency.
Although those 100mg numbers seem huge (compared to the 1.5-2 mg in the other product) there's no established toxicity level for most subtypes of vitamin B. And from the little more concrete data that exists for B6, one US institution (NAM/IoM) sets the limit at 100mg/day, although others elsewhere have set it lower, e.g. 10mg/day by the UK's NHS.
Are there other ways of supplementing? Are there supplements that are not contraindicated?
Yes. There are ways to deliver vitamins directly to the cell without needing to be passed by the intestinal system.
E.g. Vitamin B12, one of the most commonly deficient vitamins observed in IBD and crohn's patients as uptake is mainly oral and the main site of oral ...