A 36 year-old male patient comes to your office seeking treatment for his opioid abuse and alcohol abuse. He is particularly interested in using naltrexone maintenance. His past medical history is significant for chronic Hepatitis C. His most recent alanine aminotransferase (ALT) level is 80 U/L and Aspartate aminotransferase (AST) level is 90 U/L. Regarding naltrexone maintenance, which of the following statements is true?