High doses of can cause increased anxiety, uncomfortable restlessness, and an inability to focus

The drug that causes increase anxiety, uncomfortable restlessness, and inability to focus in high dosages is the Nicotine. A nicotine is a substance that is produced by the tobacco leaves in which affects the minds of individuals and that this is a major component of Tobacco which is commonly being smoked.

answer; i believe that the correct answer is ; ///(muscle adaptation principe);

answer; ///asking more questions; ///is your answer