For years I have struggled with weight loss issues and at one point in time I took Dinintel and lost 40lbs. After having my daughter I regained the weight a few years ago. I started taking Dinintel again but they only gave me energy, caused insomnia and prevented me from yawning. I gradually became addicted because I would become very sleepy without them. Upon noticing this pattern I decided to quit taking them but ever so often I find myself still taking them even though they are no longer helping with my weight loss. I have decided to try dieting and see if it helps.