Does Strattera cause weight loss

I have been on Strattera for almost a year, while it did not do a whole lot my my add, it did cause me to loose over 70 pounds, size 14 to a size 4. I just stopped and tried Vyvanse, it worked great for 2 days, but a night my hunger was uncontrollable, going to continue with the Strattera. I am taking 100mg.