I do have some tiredness which I have attributed to the hypothroidism. The diarrhea is not severe and in most cases it is more loose bowels. I have not noticed any discoloration in my bowel movements nor have I noticed any dehydration. In most cases, I do not drink enough water and I have to remind myself to do so. Until this past week or so, I was taking daily amounts of Metamucil (4-6 tablets daily) but I discontinued with the change in bowel movements.