I recently was checked for Vit d levels and it came back 3 .. Dr. said that was very serious and tried to put me on 11,000 iu of vitd which made me terrilby sick .. so she then said try 400 iu 2 times aday and we will work our way up. also to sit outside for 15 min a day .... well I have a problem of constipation and dr knows about it so what happens I got constipated from the vit d and was in the hospital for 3 days .. have bought foods that contain vit d .. well was rechecked for my levels and still at 3 ..... does anybody have any other ideas how to get vit d into my system... Much is appreciated .....