Modafinil 200mg Tablets are a non-prescription medicine used to promote wakefulness in people with narcolepsy who are excessively sleepy or have other health conditions. Furthermore, the medication is used to treat obstructive sleep apnea/hypopnea syndrome (OSAHS), a sleeping disorder in which the patient breathes shallowly while asleep, resulting in insufficient restorative sleep. Modafinil is commonly used by those who suffer from daytime tiredness. This medicine works by boosting cognitive function and encouraging persistent wakefulness.