Modalert 100 MG is commonly used for conditions involving excessive daytime sleepiness, alertness problems, or certain sleep disorders. Even if it worked well previously, continuing it for a longer period should ideally be reviewed by your doctor because the need, dosage, blood pressure, sleep pattern, and possible side effects may change over time. Some people tolerate the medicine well, while others may develop headache, anxiety, fast heartbeat, reduced sleep, irritability, or increased blood pressure with prolonged use. Avoid increasing the dose on your own or using it regularly without follow-up. Good sleep habits, stress control, regular exercise, and limiting late-night screen use may also support better daytime alertness naturally. Inform your doctor if you have chest pain, severe anxiety, palpitations, mood changes, or disturbed sleep while using the medicine. A review may help confirm whether continuing the same treatment is still appropriate and safe for you.