You can try the diet and exercise recommendations on this site before you go to your doctor, but someties medication is just the most effective way to go.
We have individual pages with more information on the most popular drugs, but here are a few general points to remember about low thyroid medicine.
Levothyroxine is a synthetic form of Thyroxine (T4), the thyroid hormone that controls your metabolic processes and influences physical development.
Liothyronine is a synthetic hormone used to replace the most potent thyroid hormone, Triiodothyronine (T3).
Liotrix is unique in that it contains synthetic versions of both the main thyroid hormones, T3 and T4.
The thyroid hormone in these products is completely natural, and actually comes from pigs. Many patients prefer this to the idea of synthetic drugs.