After seven days i had to stop. three days later i had abdominal pain and my back pain was worse and there was blood in my stool. I went to the emergency room and had a follow up and there i was told that i may have Inflamed Bowel Disease (IBD) and I guess the swelling in my abdomen was from the damage of my GI tract. I dont think that daily doses of magnesium (its a laxative) is good for you anyway. As for the itching maybe your area is a bit dry from the frequent wiping?