I have been taking Synthoid for 8 months since having my thyroid removed and have been having stomach pain and diarrhea for several weeks. My TSH level is 2.5 so endocrinologist says my dosage of Synthroid is fine and I should see my regular doctor. I really think it is related to the Synthroid. Is there something else I could switch to that wouldn't cause these symptoms? What would decreasing the dosage do to me? Maybe see a new endocrinologist?