Details of excluded trials
| NCT ID | Official title | Primary completion date |
| NCT04143256 | An Open-Label, Multi-Center Study to Evaluate Selected Constituents in the Exhaled Breath Samples From the Use of JUUL Nicotine Salt Pod System Product (5% and 3% Virginia Tobacco, Mint, Mango, Menthol) Users and Conventional Cigarettes (Non-Menthol and Menthol Flavors) | 12 December 2019 |
| NCT04123041 | A Randomized, Open-Label, Cross-Over Study to Characterize the Nicotine Uptake and Subjective Effects With Use of JUUL Electronic Nicotine Delivery Systems With Multiple Flavors and Nicotine Concentrations, Usual Brand of Combustible Cigarettes, a Comparator E-Cigarette and Nicotine Gum in Adult Smokers | 18 December 2019 |
| NCT04107779 | A Randomized, Open Label, Parallel Group Study in Adult Smokers to Evaluate Changes in Biomarkers of Cigarette Smoke Exposure After Switching Either Exclusively or Partly to Using JUUL Electronic Nicotine Delivery Systems With Two Different Nicotine Concentrations | 17 February 2020 |
| NCT04088175 | A Randomized, Open-Label, Cross-Over Study to Characterize Puffing Topography With Use of JUUL Electronic Nicotine Delivery Systems (ENDS) in Adult, Closed-System ENDS Consumers | 23 January 2020 |
| NCT03700112 | An Open Label, Randomized Crossover Study Comparing Nicotine Pharmacokinetics of Seven Electronic Cigarette Products and One Traditional Cigarette Across Two Delivery (10 Puff and Ad-libitum) Conditions, in Healthy Adult Smokers. | 24 February 2019 |
| NCT04452175 | Cigarette Consumption After switchinG to High or Low Nicotine strENght E-cigaretteS In Smokers With Schizophrenia (GENESIS) | March 2022 |