Dosage: One 100mg tablet taken in the morning, or about an hour before a mentally demanding activity. With or without food: Works slightly faster on an empty stomach. Duration: Effects can last 6–8 hours, depending on metabolism. Some users may take two 100mg tablets spaced apart (e.g., morning and early afternoon) rather than one 200mg dose to maintain a steady effect. https://modalertaustralia.com/modalert-100-mg/