I'm sure too much of it isn't a good thing but I dont think it will constipate you. It is refined and broken down in the process that it would dilute with your stomach acids. Usually constipation is because of not enough fruits and vegetables. Too much cheese and peanut butter are sometimes the culprits, too. If you eat a balanced diet, a little of everything, then you should not have any problems. Keep track of what you eat for a week and see where the overages or absences are. Go to the library to get a book about balancing meals. Talk to your doctor and bring the food log. P.S. some vitamins can clog you, too.