How Long Does Modafinil 200 mg Support Wakefulness? Alldayawake Guide

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Modafinil 200 mg generally promotes wakefulness for much of the daytime. It reaches peak blood levels roughly 2–4 hours after an oral dose, and its elimination half-life is about 12–15 hours, although the noticeable alerting effect can vary considerably between people. Factors such as metabolism, sleep deprivation, other medications, and individual sensitivity can affect how long the effects are felt.