How long would you say you've been physically addicted? And how long does it generally take for the withdrawal symptoms to kick in? I recently kicked my addiction to alcohol, and I feel for you. That shit is hard! Everyone who says you seek out professional medical care is absolutely right, but I also understand the desire to just get some medicine to ease the withdrawal symptoms and get through it myself.
Based on my experiences, I'll give some advice on the safest way to go about detoxing from alcohol at home if that's the plan after acquiring medication. I'm far from an expert, so take what I say with a grain of salt, and definitely do as much research as you possibly can.
Firstly, I want to make it clear that I don't recommend that anyone detox this way! I've detoxed both at home and in the hospital in the past, and there's numerous reasons not to do it at home. However, if someone is gonna do it, they may as well know how to go about it more safely.
Detoxing at home can be a possible (I did it once), albeit it's a lot harder and much more dangerous than simply seeking proper medical attention. Make sure you have at least a good 5 days free to do so, since you're not going to be very productive during the process. Even after the worst of it, you'll likely still have lingering withdrawal symptoms for a while. Even about two months after my detox at a hospital, I still suffer from heightened anxiety. If you happen to be dead-set on detoxing without professional help, I can't possibly stress how absolutely vital it is to have at least one person who is constantly around and monitoring you for at least 3 to 4 days. Alcohol withdrawals are very very serious, and can easily lead to death. Especially if you experience symptoms as severe as seizures while alone.
Also, having someone there to help keep you well nourished is important. You need to make sure you eat if you can, and more importantly, stay hydrated. Vitamins are also very good as your body is/will probably be deficient due to lack of a proper diet. Now the bad anxiety, sleeplessness, lack of appetite, nausea and plenty of other symptoms of withdrawals are going to be unavoidable to a degree. That's why no one considers it fun. Like people have said, benzodiazepines (Xanax, Ativan, Valium, etc..) are enormously helpful (if not necessary), for getting through withdrawals. Anti-seizure medicine is also probably a good idea depending on how severe your symptoms are. Hopefully you're in a situation where you can acquire these medicines.
Since you drink quite a bit, it'd be pretty advisable to try tapering off some before going cold turkey at home. The more dependent you are on alcohol, the more likely you are to experience fatal symptoms when you completely stop drinking. If you acquire benzodiazepines (or any other medication to ease withdrawals), make sure not to mix them with alcohol! The last thing your body needs is more stress and potential for death.
All that being said, I'm in no way recommending detoxing from an alcohol addiction without the help of professional medical care. I was lucky (stupid) enough to do it once successfully with the support of my family, and it gave me the false belief that I could detox again just as easily in the future. Long story short, 3 months later I was attempting another detox alone in my apartment. The withdrawals were worse this time, and the symptoms became bad enough that I finally realized death was a very real possibility if I didn't walk my ass to the hospital.
So if you really don't want to seek professional medical care, I understand the feeling. Just please take my advice by doing it as safely as you possibly can, and definitely don't do it alone! It requires research, and having a solid plan with a good support system. It's crucial make sure you don't take alcoholism lightly; before, during, or after detoxing. I learned the hard way that when a large majority of advice regarding a situation like this consists of "go to the hospital, dummy", you should probably just listen to it.
Really though, based on the sheer amount to drink mixed with with mysteriously waking up in a hospital once a month, I very strongly suggest you should seek proper medical care. Doctors can run tests on you to find out exactly what's going on inside your body. That gives them the ability care for it properly by supplying you with necessary medicine, in addition to nutrients your body is/will likely be deficient in.
Anyways, sorry for the rant. I know you're really just curious about what medications to acquire, but that's how my whole detox experience began, so I hope some of this proves useful. Regardless of how you go about it, I wish you all the luck in the world! I hated requiring alcohol to function normally. It's a very rough process to go through, but it feels really good to wake up and start my day with a normal breakfast instead of a bottle of vodka.