Niacin for nicotine?
D002490:Central Nervous System / Q000378:metabolism; D006801:Humans; D009538:Nicotine / Q000172:deficiency; D009539:Nicotinic Acids / Q000627:therapeutic use*; D011987:Receptors, Steroid / Q000378:metabolism; D012907:Smoking / Q000188:drug therapy*; D019966:Substance-Related Disorders / Q000628:therapy
D009539:Nicotinic Acids; D011987:Receptors, Steroid; D009538:Nicotine