Visit the Microscopic Colitis Foundation Website
According to my google search it can... I started taking spring valley D3 (soybean oil) and just my cholesterol pill after dinner. Wanted to see what would happen if I didn't take the fish oil and vitamins at all....
Good grief I am constipated... don't even need the entocort...
Next experiment.. add the regular vitamins back in... one at a time...
This has been a surprising development, to say the least!
grannyh
Can vitamin d3 cause constipation?
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I wasn't aware that it could do that. How much did you take? I've taken 50,000 IU per day, for 3 days in a row, to stop a virus, and I didn't notice any change in BMs, but maybe it affects us differently. 
Are you by any chance taking calcium carbonate? Maybe the combined effect is causing the problem. Taking magnesium along with the calcium usually helps to prevent such problems.
Tex
Are you by any chance taking calcium carbonate? Maybe the combined effect is causing the problem. Taking magnesium along with the calcium usually helps to prevent such problems.
Tex
It is suspected that some of the hardest material known to science can be found in the skulls of GI specialists who insist that diet has nothing to do with the treatment of microscopic colitis.