I didn't have problem with Clarkia at all - and I don't drink either so I could tell if something was going on... :)
And if you do some math: even if you take a high dose of 3x20 drops per day, it's not more than 22 drops of alcohol for the whole day. But who knows. What is the worst that can happen? Maybe you'll feel partying 2 weeks in a row... :) And 1 week relax, 2 more weeks party... :)