The cholesterol-lowering medication Crestor was the most-prescribed branded drug in the US in 2014-15, with 21,014,669 prescriptions.
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The asthma treatment Advair was the second most-prescribed branded drug, with 13,579,022 prescriptions written in 2014-15.
JB Reed/Bloomberg/Getty Images
Nexium helps ease heartburn caused by gastroesophageal reflux disease. It was the third most prescribed in 2014-15, with 13,207,161 prescriptions written.
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Diabetics use the Lantus SoloSTAR pen to inject insulin. It was the fourth most-prescribed medication in 2014-15, with 11,167,187 prescriptions written.
Lantus Solostar/Sanofi
The stimulant Vyvanse, which is used to treat attention-deficit/hyperactivity disorder and binge-eating disorder, is number 5 with 10,608,454 prescriptions written.
Vyvanse/Shire
Lyrica, a treatment for fibromyalgia, seizures and diabetic nerve pain, is number 6 with 10,093,516 prescriptions.
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Number 7 is the Spiriva Handihaler, prescribed to patients with chronic obstructive pulmonary disease. There were 9,508,813 prescriptions written for it in 2014-15.
Spiriva
Eighth is Januvia, prescribed to treat Type 2 diabetes, with 9,215,324 prescriptions written in 2014-15.
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Symbicort, a treatment for COPD and asthma, is the ninth most-prescribed branded drug in 2014-15, with 8,571,064 prescriptions.
Symbicort/AstraZeneca
The anti-psychotic Abilify is prescribed to treat conditions including schizophrenia, bipolar disorder and depression. It was the 10th most-prescribed branded drug in America, with 8,301,207 prescriptions.