I am having scans and blood tests at the moment to determine what thyroid issue I have. I have been taking amitriptyline for chronic headaches for 4 months as the doctor told me I was stressed as I went to the GP with constant headaches . I felt worse and started loosing hair so I went back to the doctors and insisted on blood tests. The result of the test suggest a thyroid issue. I have had two lost if blood tests first results were overactive thyroid and second results were underactive. I have now been prescribed levothyroxine until scan results come back. I stopped taking the amitriptyline but the headaches came back almost straight away along with insomnia. I still have 3 weeks until I seen the consultant so I have continued to take the amitriptyline to aid sleep and help with headaches. I take the amitriptyline about 7pm and the levothyroxine at 7am. Will they be ok to take together until I see the consultant again ???