THYROFAST-100 is a medicine used to treat an underactive thyroid gland (hypothyroidism). It replaces the hormone which is not being produced by your thyroid gland in sufficient quantity and helps regulate your body’s energy and metabolism. Before you start taking THYROFAST-100, your doctor will do a blood test to see what dose you need. Once you start taking the medicine, you will have regular blood tests to see how well it is working, and the dose may be adjusted from time to time. It is best taken on an empty stomach before your first meal of the day. You should take this medicine regularly to get the maximum benefit. It may take several weeks before your symptoms start to improve. You may need to take it for the rest of your life. If you stop taking it, your symptoms are likely to come back.It will be recommend for Hypothyroidism, Thyroid cancer, Thyroiditis, Goiters.