My blood tests suggest that my thyroxine level is within the normal limits. I still feel a bit tired and wonder if it would do any harm to increase my dose?
It is up to your doctor to interpret the blood test results and make sure that an increase in your thyroxine does not make you overactive because patients receiving too much thyroxine are at risk of thinning bones, increasing heart rate that can lead to palpitations and high blood pressure. It all depends on your blood test results and where exactly you sit within the normal limit. Patients may feel at their most healthy when blood test results are tending towards biochemical evidence of over-replacement. There is then a fine balance for patient and doctor to agree on the preferred replacement dose.