Hi..i'm smoker..now i fell cough..what tips for stop the smoke and the best medicine for that.thx?

Stop smoking: Best method is cold turkey! if not try reducing by one cig per day. Increasing both hydration and exercise can reduce withdrawal. Nicotine withdrawal only lasts a few days.

Cold turkey.: As far as quitting without any nicotine replacement, the cold turkey method is great, and has proven to be the most successful method overall. But plan it ahead of time. Pick a quit date in advance, maybe a meaningful date like a birthday or holiday, and gather people who are aware of your attempt that you can call upon for moral support if you start to falter. Good luck!!