Hi, I have no energy, and am drowsy after having plenty of sleep. I have had weight gain of 50 pounds in the last 4 years. I am not depressed.... my energy level drops quickly..I was on thyroid medication dose of 75 and a couple years ago went in for regular check up test, and a different doctor said I didn t need to be on the thyroid medicine and took me off the medicine, but I just realized these are the same symptoms I was having when they first put me on thyroid medicine. I am retired but I have been in the field of construction and am very physically active, but I have to fight the fatigued.