Artvigil 150 (150 mg armodafinil) usually lasts 10-15 hours after a morning dosage. Most sources suggest a length of 12-15 hours, however individual responses might range from 10-14 hours depending on metabolism, liver function, food consumption, and tolerance. Armodafinil has a half-life of 11-15 hours, which matches the active periods. A single daily dose of Artvigil 150 typically provides 10 to 15 hours of alertness.