Agreed with what halah posted although never had to resort to heavy duty but it's supposed to help and makes perfect sense that they (antipsychotics) should, as long as its a 5HT2A antagonist and not only some dopaminergic antagonist or something really atypical.
And yes there are different types of problems / different levels. If you really lost the plot completely and are a threat to yourself or others (or people are very concerned for your condition and how it develops), the antipsychotic is the choice... but if it's more like a panic attack like freakout benzos are better. Panic / anxiety attacks can even cause sober people to feel like they're dying but there is no danger to health or sanity.
Yeah beer can really dull the shit out of it, rediscovered that just last weekend. It certainly wasn't necessary and I don't plan on doing it again, but I am trying to limit alcohol to the weekends and let myself go a bit while on acid.