Modalert 200mg helps promote wakefulness, but some people may still feel tired for various reasons. Lack of quality sleep, stress, poor sleep habits, dehydration, or underlying health conditions can affect energy levels even while taking modalert 200mg. The timing of the dose and individual response to the medication may also play a role. Since modalert 200mg is designed to support alertness rather than replace proper rest, persistent tiredness may indicate another issue that should be evaluated by a healthcare professional. Always follow your prescribed dosage and medical advice.