My $0.02 is that Antabuse is a good TOOL to add to a RECOVERY plan. Not a solution to not drink.
Yes, you can have dire side effects if you drink on them (I did that when I had no plan to quit but wanted to seem like I was) and they are a little hard on the liver. Not meant for long term use. I used them the first 90 days of sobriety, carefully monitored by my psych - as in, she wanted me to come to the office every day to get mine but that wasn't feasible, so I got a sheaf of papers and every day took it, signed it with when and where, and had a witness signature.
I put AA and a lot of other stuff as my foundation and this was, again, just a tool for early use. When I went back to work in a restaurant at 5 mo sober, we discussed using it again - I had a very strong program by then and we decided I didn't need to take it.
I had no side effects.
From the little bit you told us, sleeping and then taking a drug aren't a recovery plan.