Total nicotine measured by exposure in each puffing regimen
| Shisha | Nicotine per regimen (mg) ±SD* | ||
| Low | Modified Beirut | High | |
| Product 1 | 0.41±0.36 | 1.4±0.20 | 2.5±0.12 |
| Product 2 | 0.39±0.17 | 1.1±0.09 | 2.3±0.09 |
*SD calculated by error propagation. Estimated values for product 1 based on nicotine analysis of product 2.