5 Most Used Prescription Drugs In The US

2. Levothyroxine 

Total Number Of Prescriptions: 98,970,640  

Levothyroxine, commonly sold under the brand names Synthroid, and Levoxyl among others, is used to treat thyroid hormone insufficiency, especially the severe variant known as myxedema coma. Certain varieties of thyroid tumors may also be treated and prevented using it. In 2019, the global market for levothyroxine sodium was valued at USD 3440.6 million, and by the end of 2026, it is anticipated to have grown to USD 4183.4 million, with a CAGR of 2.8%.