| Stain maker |
| Smokers' fix |
| Niacin source |
| Addictive stuff |
| Patch stimulant |
| Certain craving |
| Smoker's stimulant |
| Cigarette stimulant |
| Source of addiction |
| Stuff in cigarettes |
| Alkaloid in tomatoes |
| Parliament component |
| Barrie's "My Lady ___ |
| Cigarette "ingredient |
| Ingredient in some gum |
| Parliament constituent? |
| Substance in cigarettes |
| Contents of some patches |
| What some patches provide |
| Ingredient in therapeutic gum |
| Material found in tobacco used as an insecticide |