I haven’t had problems w drinking and T1D. I am not a heavy drinker, but when I do, I have not “crashed”. I make sure to eat BEFORE drinking (even if just a few pieces of bread) and inject maybe HALF of my normal dosage.
This is what I’ve heard: drinking inhibits the cells from absorbing insulin. Something about the inebriated liver hindering the normal cell productions? I’m not sure, honestly.
All I do know is that when I drink, after a few carbs (2 servings?) and half the insulin dosage, I’m okay throughout the night with beer. If I drink mixed drinks, I inject throughout the night (sometimes up to five shots in one night) to cover for “Mai Thais” and “Sex on the Beach” and “Smirnoff Ice” and “Mike’s Hard Lemonade” and “Sangria”. I mean those drinks have fruits and sugars in them, so obviously I’d have to cover those.
But, regular beer is no big deal for me. I drink a lot of Michelob Ultra (which is almost a “free” drink), am able to get a bit tipsy off a few of those, and that’s enough for me.
This works for me. I have not had any trouble. I tend to keep myself on the “high” side (around 150-200) on those nights because I don’t want to “crash”.