Modalert 100 | treat excessive sleepiness from narcolepsy, sleep apnea Modalert 100 is a prescription medicine used to treat excessive sleepiness from narcolepsy, sleep apnea, or shift work sleep disorder. It contains 100 mg of modafinil, which promotes wakefulness and helps improve focus without strong stimulant effects. Popular in both the US and UK, Modalert 100 is sometimes used off-label for mental alertness. Common side effects include headache, nausea, and insomnia. It should be taken under medical advice and not used by those with heart issues. Always follow the prescribed dosage. visit:https://www.genericshub.com/modalert-100/