Artvigil, which contains Armodafinil, isn't like the usual stimulant buzz, the increased focus and alertness can persist for a long time. Overall wakefulness lasts at least 10–15 hours, with most people experiencing peak effects for 6–8 hours. You could feel cognitively "on" long after the peak fades because the half-life is about 12 to 15 hours. Some report feeling slightly happier, but not overly euphoric. Higher dosages might increase negative effects including anxiety, headaches, and sleeplessness, but they don't always produce a "high."
