The document summarizes a study from the University of California on smoking and ADHD medication. The study examined whether ADHD medication could reduce smoking and withdrawal symptoms in non-treatment seeking smokers with ADHD. Fifteen adult smokers with ADHD participated in experimental and field monitoring phases. The results showed that ADHD medication improved cognitive performance, reduced withdrawal symptoms, and lowered salivary cotinine levels compared to placebo. The researchers concluded that ADHD medication may aid smoking withdrawal and cessation in smokers with ADHD.