A dose of Artvigil 150mg is a cognitive enhancer designed to improve alertness and cognitive function. Each capsule contains 150 milligrammes of the potent wakefulness-inducing and alertness-improving substance armodafinil. In contrast to other stimulants, Artvigil 250mg provides a sustained and consistent surge in energy, devoid of the gastrointestinal distress or abrupt decline in energy levels commonly associated with coffee.