Modalert 100 Online is a medication primarily used to improve wakefulness in patients with sleep disorders like narcolepsy, obstructive sleep apnea, or shift work sleep disorder. The active ingredient in Modalert is modafinil, a wakefulness-promoting agent. It works by influencing certain neurotransmitters in the brain that regulate wakefulness and alertness. Typically, it's prescribed to help individuals stay awake during the day or remain focused during work shifts.

The standard dosage is one 100 mg tablet per day, usually taken in the morning. Side effects may include headaches, nausea, dizziness, or insomnia. It's important to use Modalert 200 as prescribed by a healthcare professional and to avoid excessive use or misuse, as it can lead to dependency or other health issues. If any severe side effects occur, such as chest pain or severe allergic reactions, immediate medical attention is necessary.