Main classes of involved drugs in aseptic meningitis. Among 282 suspect drugs, the main drugs involved were intravenous immunoglobulin (IVIG: 30%), nonsteroidal anti‐inflammatory drugs (NSAIDs: 14%), antimicrobials (11% with amoxicillin representing 5% of the total of suspected drugs) and sulfamethoxazole/trimethoprim (2% of the total of suspected drugs), some monoclonal antibodies (8%, including antineoplasic and immunomodulating agents) and various vaccines (7%)