I've tried every major drug & drug combo out there. But GHB, without a doubt is the most addictive in my case. Followed by alcohol. I found GHB when I needed something for cocaine comedowns. I loved it and soon stopped buying cocaine so that I could spend my money just on GHB alone.
I was hooked extremely quickly. It was the 1st drug I became addicted to, although not the last.
A cap of GHB seemed to solve all of my anxiety and ended my panic attacks. It dissolved any kind of pain, and makes you very happy. It cured just about anything, from a migraine, boredom, insomnia, hangover, comedowns of any size... it made you feel as if the world was just right. I quickly started taking caps several times a day - then waking up to take more. I was eventually taking 1 per hour or so. My body was completely hooked within 6-8 weeks. I was pulled over one night and arrested for having a warrant. I was taken to jail and cut off from my precious G. Within only a few hours, I went into full-blown W/D in a cell, and an ambulance took me to the hospital, with dangerously high blood pressure and a pulse almost too high to believe. GHB withdrawal is life-threatening (much like alcohol w/d). I left the hospital and lived at my parents for the next 30 days, on a prescription that caused me to basically sleep that whole month, with VERY little memory of even staying there.
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I was warned to never start drinking alcohol in place of that addiction. I listened at first, then threw caution to the wind. I slowly drank more and more. I became a hardcore alcoholic for the next 9 years, throwing painkillers in the mix for 5 of those years. Took 6 trips to rehab, jail, detox's, losing my kids, being on the street, 6 months in a sober-living home, and almost dying several times to get where I am now.. I will have 1-year sober from alcohol on August 25th!
I firmly believe alcohol to be the most dangerous drug out there. It's so widely accepted, but can turn your life into a nightmare very quickly if you don't know when enough is enough.