Question: does synthroid cause essential tremors?
Answer: Thyroxines like levothyroxine (Synthroid, Levoxyl) are used to treat hypothyroidism and may cause tremor. Pro-tip: Taking too much thyroid hormone—being so-called “over-replaced” on your thyroid dose—may also cause tremor, so you'll want to have your doctor do a TSH blood test if you are experiencing hand tremor.