How long does it take alcohol to reach the brain after being consumed? Do you currently have car insurance? Insurance is mandatory to drive in Ohio Yes I have insurance. But please show me your best quotes. No, please help me find the best insurance. Question How long does it take alcohol to reach the brain after being consumed? Answers Minutes One hour Two hours A day Explanation Alcohol does not need to be digested. It enters the bloodstream rapidly and reaches the brain within minutes of being consumed.