It takes between 4-6 weeks
for a
dosage change to reach full potential, then it can often take a few more weeks
for the body to "get well". Many people don't realize that hypothyroidism is an illness and we have to get well from it, just as we do from the flu or a cold or any other illness. The body heals the most important things first, like heart rate, body temperature, etc, so things like tinnitus, hair loss, etc might be last on the list of things to get better.