Alcohol is not good whether you are on or off a cycle. However, i drink occasionally and like to live a little. If you just taking test there will be very little interaction at least as far as the liver is concerned since it is not 17aa toxic. Now, when you start doing drugs like dbol, etc you should really not drink. The only problem i would see are the ones that would be present even off a cycle, and the test also puts your body under stress as well as liquor