Alcohol is discouraged with armodafinil because the combination can cause unpredictable effects on the brain. Armodafinil is a wakefulness-promoting medicine, while alcohol is a depressant, so together they may increase dizziness, impaired judgment, nausea, anxiety, or sleep disruption. Alcohol can also reduce the effectiveness of armodafinil and make side effects harder to notice. Some people become more sensitive to alcohol while taking it. This is why doctors usually advise avoiding alcohol when prescribed armodafinil or products sometimes mentioned online, such as Waklert 150, unless a healthcare professional says otherwise.