Once you stop smoking, whether you are applying Champix or not, it can have an affect on how your body processes other medicines you could take.A B C D E File G H I J K L M N O P Q R S T U V W X Y Z A B C D E File G H I J K L M N O P Q R S T U V W X Y Z How does this medication operate? What is going to it do for me?Drowsiness/lowered alertness: T