Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome. Before taking modalert, tell your doctor if you haveleft ventricular hypertrophy (enlarged left heart ventricle); chest pain, irregular heartbeats, or other symptoms of mitral valve prolapse due to central nervous system stimulant use; a recent history of a heart attack; high blood pressure; angina (chest pain); abused medicines called stimulants or street drugs; * a history of mental illness; * kidney disease; or * liver disease. You may not be able to take modalert, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above. Modalert is in the FDA pregnancy category C. This means that it is not known whether it will be harmful to an unborn baby. Do not take modalert without first talking to your doctor if you are pregnant or could become pregnant during treatment. It is not known whether modalert passes into breast milk. Do not take modalert without first talking to your doctor if you are breast-feeding. If you are older than 65 years of age, you may be more likely to experience side effects from modalert. You may require a lower dose or special monitoring during treatment.

Take each dose with a full glass of water. Modalert can be taken with or without food. Modalert is usually taken once a day. Follow your doctor's instructions. It is important to take modalert regularly to get the most benefit.Modalert is not a replacement for sleep. Modalert may reduce the signs of sleepiness, but may not completely treat this problem. Some drowsiness may continue. Potentially hazardous activities such as driving or operating machinery should only be performed if the level of wakefulness achieved is sufficient to permit such activities. Other treatments such as CPAP (continuous positive airway pressure) use should be continued as directed by your doctor if you have obstructive sleep apnea/hypoapnea syndrome (OSAHS) and are taking modalert. Modalert may be habit forming. You should discuss the abuse and dependence potential of modalert with your doctor. Do not stop taking modalert without first talking to your doctor. Your doctor may want to gradually lower the dose of the medication before stopping treatment. Store modalert at room temperature away from moisture and heat.