A few weeks ago I had a stack with of blood tests done as I was completely drained, everything came back ok but Ferritin levels came back low at 10 is that really low? Now I was prescribed ferrous sulphate 2x200 a day but to be honest I'm not sure it's making me feel great but at same point I am going through the menapause, have Graves Disease as well as overactive thyroid and GERD. I'm sure it's because my thyroid might be out if sinc but they will not test my t3 or t4 I am sure that the thyroid or menapause is also causing the Gerd, not sure what to do as I am having rather weird symptoms.