| tobacco | 0.52 |
| cigarette | 0.51 |
| tobacco leaves | 0.43 |
| nightshade family of pl… | 0.33 |
| tomato | 0.29 |
| eggplant | 0.25 |
| potato | 0.25 |
| all tobacco products | 0.18 |
| cigar | 0.16 |
| chewing tobacco | 0.16 |
| enter the bloodstream | 0.48 |
| enter the body | 0.47 |
| reach the brain | 0.45 |
| pass into the bloodstre… | 0.43 |
| stimulate the release o… | 0.42 |
| stimulate the brain | 0.41 |
| increase blood pressure | 0.41 |
| bind to receptor | 0.40 |
| bind to nicotinic acety… | 0.39 |
| increase heart rate | 0.39 |
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| product | 0.52 |
| electronic cigarettes | 0.48 |
| negative effects | 0.46 |
| effect | 0.32 |
| benefit | 0.32 |
| similar effects | 0.30 |
| harmful effects | 0.29 |
| liquid | 0.23 |
| the most effect | 0.16 |
| indigestion | 0.16 |
| heartburn | 0.16 |
| stimulant | 0.57 |
| alkaloid | 0.45 |
| drug | 0.41 |
| powerful drug | 0.37 |
| the substance | 0.34 |
| vasoconstrictor | 0.26 |
| a central nervous syste… | 0.25 |
| both a stimulant | 0.24 |
| toxic alkaloid | 0.16 |
| known poison | 0.16 |
| absorbed | 0.68 |
| released | 0.56 |
| inhaled | 0.56 |
| used as insecticide | 0.50 |
| added | 0.50 |
| metabolized into cotini… | 0.47 |
| metabolized in the liver | 0.47 |
| extracted | 0.43 |
| dissolved in propylene … | 0.43 |
| derived | 0.42 |
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