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https://www.smartfinil.net/product/modalert-200/ A doctor should prescribe Modalert 200 (modafinil). For optimal alertness and minimal sleep disruption, take it in the morning. Daily dose is one 200-mg pill. On an empty stomach, Modalert may work faster. Late afternoon and evening use might impair sleep. During this medicine, stay hydrated and avoid alcohol and stimulants. When you recall a missed dosage, take it, but avoid it if it's near to the next one. Take your doctor's advice and report any adverse effects.