HI just wondering if anyone out there has ever experienced weight loss while taking Levothyroxine. At 5 foot 1 and 8 stone 2 I was never overweight even though I had an underactive thyrold. Since taking 50 mcg over last few years my weight had dropped to just under 8 stone bearing in mind i eat like a horse. Few months ago my weight dropped down to 7 and half stone. Now I was really worried so in February I had bloods tests for everything all came ok. At that time thyroid was 2.68.