Drug used for cessation of smoking -: (A) Theophylline, (B) Biclutamide, (C) Salmeterol, (D) Varenicline
Answer is D. Ans. is 'd' i.e., Varenicline o Varenicilline is a direct acting nicotine agonist with selective action on a4 b2 isoform of Nm receptors. It is an antismoking drug.