Hi Janette and Welcome!
It's hard to answer you from what you have posted. Dr. E doesn't post here anymore which is why we are answering you instead.
First off, I think it would be a good idea to read the book, Dr. Sinclair explains and discusses a lot of things that are not mentioned on this forum. You can download the ebook here:
http://www.amazon.com/The-Cure-Alcoholi ... in_title_0You say that you were drinking over 1.5l of wine per day (5l in 3 days). How many hours does it take you to drink that? Is it over a few hours at night or are you sipping all day? I ask this because if it is the latter, the chances are that you would need to take Nal twice a day, Dr. Sinclair talks about this in his book. Naltrexone, like every medication, wears off gradually, so if you are taking it in the morning or afternoon, it's only half as effective 4 to 6 hours later, this means that you are not fully covered later in the evening.
Did you feel anything taking Nal? Any side effects? Nausea?, worse hangovers?, wine tasting different? lethargy?
Did you keep a diary of how much you drank every day ? This is really helpful because it allows us to objectively evaluate our progress, if we don't record anything, number of units, how we feel etc... we miss out on some vital information.
Some people are more or less sensitive to Naltrexone, for example, 50 mg was too much for me and was making me too ill but when I dropped to 25mg I felt much better and my units dropped too, I know of other people for whom 50mg wasn't enough so they took 75mg or even 100. I think it could be something you could try.
Are you taking other medication that might interfere with Naltrexone ?
Whether you take Nal or not, another golden rule is to NEVER drink on an empty stomach or when you are thirsty. Hunger and thirst are the two major physical triggers, so always drink a large glass of water before you start drinking and either eat a meal before or early into your drinking or at least have a pro tine snack, these alone will drop your units and the urgency to drink.
I think you should give it another try, but differently this time. Read the book. Start a progress report here, record your units and record events and feelings. Try taking 75mg if you are a night time drinker or taking 2X50mg if an all day drinker. Improve your eating habits, eat and drink when you take your Nal. And see how it goes
Good luck.
Curi