Modafinil can start working for a lot of people, although the effects are often mild rather than strong. The effects of Modvigil 200 usually start to show up in 30 to 60 minutes. You may experience less weariness, improved focus, sharper thinking, and heightened alertness. Unlike stimulants like coffee, it usually doesn't give you a big thrill. Rather, the transition seems gradual and seamless. For some, it's only the realization that they are no longer exhausted. Individual sensitivity, dose, tolerance, and sleep patterns can all affect the severity. The degree to which you perceive the effects can be affected by maintaining proper hydration and relaxation.