Risk of serious and life-threatening rashes with modafinil (Stevens-Johnson syndrome, toxic epidermal necrolysis, and drug rash with eosinophilia and systemic symptoms). Risk of multiorgan hypersensitivity reactions (with modafinil) and angioedema and anaphylactoid reactions (with armodafinil). Use not recommended in left ventricular hypertrophy or mitral valve prolapse syndrome. Use caution in history of myocardial infarction, angina, or hypertension. Use with caution in hepatic impairment. Use caution in history of psychosis, depression, or mania (modafinil might worsen symptoms). Use with caution in Tourette’s syndrome (may unmask tics). Potential for drug dependency exists.