How strong of a stimulant is modafinil?

The well-known generic form of Modvigil 200 is frequently used to treat sleep disorders such as narcolepsy or sleep apnea. It is also used off-label to improve cognitive function. For 12 to 15 hours, Modvigil 200 can keep you alert and awake, but it often doesn’t produce the jitters or elevated heart rate that come with more potent stimulants. Nevertheless, dependence, anxiety, or sleeplessness can still result from excessive usage or high dosages. Always use it sensibly and under a doctor’s supervision.