Sustained reductions after 4 months of inhaler use
| Inhaler | Reduction |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | Yes |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Nicotine | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | Yes |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
| Placebo | No |
|