(It's not an NA beer, but my pdoc is okay with moderate alcohol intake with my current antidepressant. I bought a 12-pack before Christmas, and have five left; I've been drinking one every weekend or so, and a bottle lasts me two to three hours. I suspect this qualifies as moderate.)
(The reason I bought the 12-pack was that I love, Love, LOVE Samuel Adams Cream Stout, and the mixed pack of winter beers was the only one that had it. I figured if the side effects of one beer were too strong or unpleasant, I could surely give the rest away.)