Long-term usage of modafinil, also known as Modvigil 200, may be safe if taken under a doctor's supervision. Narcolepsy, obstructive sleep apnea, and shift work sleep disorder are among the chronic diseases for which it is frequently recommended. According to studies, modafinil has fewer adverse effects and a lower potential for abuse than conventional stimulants. However, some people may still experience tolerance, headaches, anxiety, or insomnia with prolonged use.