Nuvigil has been declined for approval by the U.S. Health regulators after some questionable data in making the said Cephalon sleep disorder drug. Nuvigil is a successor to Provigil and was introduced last June. Cephalon received a response letter of denial to approve the drug for jet lag this time.
According to the Centers for Disease Control and Prevention Agency in U.S, Jet Lag is a condition marked by a disrupted sleep cycle, headaches, or an upset stomach. Initially, The FDA had given an expe





