I recently got a prescription for Naltrexone to curb my chardonnay habit. Each time I tried it, it definitely cut down my drinking to one glass of wine per evening; however, it made me feel "wierd," gave me brain fog to the point that I could not concentrate on anything, especially my work, made me dizzy and drowsy to the point that I nod off for a nap. Subsequently, I stopped taking it. Please tell me if I continue to take it, how long will these side effects go on because it's very disruptive to my life. I can deal with this for a few days, but not permanently.