The 10 Most Prescribed Drugs In The World

4. Levothyroxine Sodium

Levothyroxine Sodium is a prescribed medication (boasting over 70.5 million prescriptions a year) that is used to treat hypothyroidism and restore the body’s thyroid hormone balance. The drug is comprised of a man-made thyroid hormone that is identical to thyroxine (the hormone that is the body naturally makes via the thyroid gland.