Hi I have an overactive thyroid and suffer with dry eyes due to work I brought some optrex eyedew drops but I noticed it says ask doctor if you suffer from thyroid disorders is it safe to use?

I have an overactive thyroid and really struggle with my weight I am 18 stone I can't seem to lose any and my thyroid tablets are not working me and my husband are trying for a baby and the doctor said I need to lose weight but nothing seems to be working, I am desperate for a baby after we miscarried our first any tips on how I can improve my health and thyroid naturally