Table 2. Top Therapeutic Classes by United States Sales1.
| 2011 rank | therapeutic area | 2010 sales (in $ billions) | 2011 sales (in $ billions) |
|---|---|---|---|
| 1 | oncology | 22.3 | 23.2 |
| 2 | respiratory agents | 19.3 | 21.0 |
| 3 | lipid regulators | 18.8 | 20.1 |
| 4 | antidiabetics | 17.7 | 19.6 |
| 5 | antipsychotics | 16.2 | 18.2 |
| 6 | autoimmune diseases | 10.6 | 12.0 |
| 7 | antidepressants | 11.6 | 11.0 |
| 8 | hiv antivirals | 9.3 | 10.3 |
| 9 | anit-ulcerants | 11.9 | 10.1 |
| 10 | narcotic analgesics | 8.4 | 8.3 |