It would have to be a pretty big pill. A bottle of beer is 355ml, 5% alcohol, by volume = 17.75 ml alcohol. Alcohol is 80% as dense as water, so the alcohol in that bottle weighs about 14 g.
Now consider the weight and size of the pill you’d need for that amount of alcohol. Dehydrated alcohol is simply a volatile liquid, so you have two ways to go here: You can simply pour the alcohol into a capsule and keep it in its liquid form, or you can absorb it with another substance like the great humanitarians who invented alcohol powder seem to have done.
Alcohol powder apparently involves a sugar derivative which will absorb 60% of its own weight in alcohol. So your 14g of alcohol will need to be combined with 23 g of stuff, giving you 37 g of dry alcohol powder. You might or might not have to add other stuff to make that stay in a coherent tablet form. By comparison, an extra strength Tums tablet weighs less than 2 g. So you’d have to take the equivalent of about 20 Tums to consume the alcohol in one bottle of beer.