hi Woodrow,
welcome to the forum

Naltrexone *is* what you're looking for, either Naltima & Nodict is fine
TSM isn't a widely known treatment & Naltrexone is usually used alongside abstinence, so the general directions are to avoid alcohol. however, if you chase the buzz & drink to excess, then all the usual dangers of excessive alcohol consumption apply, up to and including death. taking Naltrexone with opiates is particularly hazardous as the high will be blocked & the person may take an excessive dose, at which point the dangers of opiate overdose - eg respiratory failure - are possible
if you haven't read it already, I would recommend reading/downloading the "The Cure for Alcoholism" book which explains TSM from here:
https://www.dropbox.com/s/60fs7gmvbyzs1kk/Cure%20for%20Alcoholism.pdf?dl=0all the best
-badger