Vaping THC From Electronic Cigarettes

Summary

This study aims to understand THC pharmacology and the safety of cannabis vaping, including the pharmacology and safety of co-administration of nicotine and THC. The study is designed as a within-subjects single-blinded crossover study. Fourteen smokers of tobacco cigarettes and cannabis will switch between three conditions, namely: (a) vaping cannabis leaf, (b) vaping tobacco containing nicotine and (c) vaping a combination of cannabis leaf and tobacco containing nicotine. All participants will vape each product with the PAX loose-leaf vaporizer. The study will be conducted during three outpatient visits separated by at least 48 hours. The order of treatment (cannabis leaf, tobacco with nicotine, cannabis leaf \& tobacco with nicotine) will be counterbalanced between subjects. Subjects will be blinded to the content of the vaporizer on the study day but will be told during screening that they will vape cannabis alone, tobacco alone, and cannabis plus tobacco with nicotine.

Timeline

Start

2019-03-20

Primary completion

2019-11-30

Completion

2019-11-30

Publications

• Background King BA, Patel R, Nguyen KH, Dube SR. Trends in awareness and use of electronic cigarettes among US adults, 2010-2013. Nicotine Tob Res. 2015 Feb;17(2):219-27. doi: 10.1093/ntr/ntu191. Epub 2014 Sep 19.
• Background Arrazola RA, Singh T, Corey CG, Husten CG, Neff LJ, Apelberg BJ, Bunnell RE, Choiniere CJ, King BA, Cox S, McAfee T, Caraballo RS; Centers for Disease Control and Prevention (CDC). Tobacco use among middle and high school students - United States, 2011-2014. MMWR Morb Mortal Wkly Rep. 2015 Apr 17;64(14):381-5.
• Background St Helen G, Havel C, Dempsey DA, Jacob P 3rd, Benowitz NL. Nicotine delivery, retention and pharmacokinetics from various electronic cigarettes. Addiction. 2016 Mar;111(3):535-44. doi: 10.1111/add.13183. Epub 2015 Nov 11.
• Background St Helen G, Ross KC, Dempsey DA, Havel CM, Jacob P 3rd, Benowitz NL. Nicotine Delivery and Vaping Behavior During ad Libitum E-cigarette Access. Tob Regul Sci. 2016 Oct;2(4):363-376. doi: 10.18001/TRS.2.4.8.
• Background Center for Behavioral Health Statistics and Quality. Behavioral health trends in the United States: Results from the 2014 National Survey on Drug Use and Health. NSDUH; 2015.
• Background Schauer GL, King BA, Bunnell RE, Promoff G, McAfee TA. Toking, Vaping, and Eating for Health or Fun: Marijuana Use Patterns in Adults, U.S., 2014. Am J Prev Med. 2016 Jan;50(1):1-8. doi: 10.1016/j.amepre.2015.05.027. Epub 2015 Aug 12.
• Background Morean ME, Kong G, Camenga DR, Cavallo DA, Krishnan-Sarin S. High School Students' Use of Electronic Cigarettes to Vaporize Cannabis. Pediatrics. 2015 Oct;136(4):611-6. doi: 10.1542/peds.2015-1727. Epub 2015 Sep 7.
• Background Akre C, Michaud PA, Berchtold A, Suris JC. Cannabis and tobacco use: where are the boundaries? A qualitative study on cannabis consumption modes among adolescents. Health Educ Res. 2010 Feb;25(1):74-82. doi: 10.1093/her/cyp027. Epub 2009 Jun 10.
• Background Amos A, Wiltshire S, Bostock Y, Haw S, McNeill A. 'You can't go without a fag...you need it for your hash'--a qualitative exploration of smoking, cannabis and young people. Addiction. 2004 Jan;99(1):77-81. doi: 10.1111/j.1360-0443.2004.00531.x.

Drugs

Indications