The purpose of this research is to assess the analgesic and subjective effects of terpenes administered alone and in combination of THC.

The overall aim of this placebo-controlled study is to examine dose-dependent analgesia, intoxication, abuse liability, and pharmacokinetics of ecologically relevant doses of vaporized myrcene and beta-caryophyllene administered alone or with vaporized THC.

Inclusion Criteria:

• Male or non-pregnant female aged 21-55 years
• Report non-medical use of cannabis 1-7 days per week over the 1 month prior to screening
• Not currently seeking treatment for cannabis use
• Urine test positive for recent cannabis use
• Have a Body Mass Index from 18.5 - 34kg/m2.
• Able to perform all study procedures
• Must be using a contraceptive method (hormonal or barrier methods)

Exclusion Criteria:

• Meeting DSM-V criteria for any substance use disorder other than nicotine, caffeine, or mild CUD
• Report using other illicit drugs in the prior 4 weeks
• • If medical history, physical and psychiatric examination, or laboratory tests performed during the screening process not within the normal range and / or reveal any significant illness (e.g., hypertension) as judged by the study physician and to put the participant at greater risk of experiencing adverse events due to completion of study procedures.
• Current licit use of cannabis primarily for medical purposes, prescription analgesics, or any medications that may affect study outcomes
• Current pain
• Pregnancy is exclusionary due to the possible effects of the study medication on fetal development.
• History of an allergic reaction or adverse reaction to cannabis is exclusionary.
• History of respiratory illness or current respiratory illness
• History of seizure disorder or current seizure disorder
• Insensitivity to the cold water stimulus of the Cold Pressor Test
• Currently enrolled in another research protocol
• Current major Axis 1 disorders (mood, anxiety, or psychotic disorder)
• Not using a contraceptive method (hormonal or barrier methods)
• The evaluating physician reviews all medical assessments along with medical history. Any disorders that might make cannabis administration hazardous are exclusionary.