Nuvigil is the brand name of Armodafinil. It is a prescription medication used to treat drowsiness induced by sleep disorders such as narcolepsy, obstructive sleep apnea, and shift work sleep disorder. Nuvigil is a kind of eugeroic, which promotes alertness. Armodafinil, the main component in Nuvigil, works by influencing neurotransmitters that regulate alertness and sleep (buy Nuvigil 100mg). It is thought to promote alertness and minimize excessive daytime drowsiness, helping people with sleep problems to stay awake and attentive during the day. It is important to remember that Nuvigil is a prescription drug that should only be used under the supervision of a healthcare expert.