Moderate drinking (1-2/day) shouldn't do much to affect a psych med regimen - generally speaking. But if it goes beyond that, or if you're on a certain few medications, much caution should be exercised.

I had a conversation about this with a previous (very good) psychiatrist. He wasn't so much concerned about specific med interactions. The thing that concerned him more was the potential for mood instability brought on by the alcohol use. If you throw yet another mood-altering variable in the mix while trying to find a stable mood regimen, it just confounds the ability for the psychiatrist to find a point of med-based stability.

Just my $0.02. Take it for what it's worth. Like you I'm in sobriety, so I don't mess with alcohol or other substances. That's probably the ideal state for someone trying to find stability, especially early in the process.