Modvigil 200mg (https://www.smartfinil.net/product/modvigil-200/) usually takes 30 to 60 minutes to start functioning, peaks in 2 to 4 hours, and provides 12 to 15 hours of sustained wakefulness. When taken in the morning, the majority of consumers found it to be beneficial all day. Depending on tolerance, dosage, and metabolism, each person may react differently.