Please assess the completion status of the following clinical trial:

Trial Title: Vaporization as a Smokeless Cannabis Delivery System

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE1
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Age 21-45 years Current history use of marijuana. Subjects must have smoked marijuana within the past 30 days but an amount totaling less than 10 marijuana cigarettes or the equivalent.~All men and women in this study must agree to use adequate birth control during the study. Acceptable barrier birth control methods are a male condom, female condom, diaphragm, or intra-uterine (IUD).~All women of reproductive potential (who have not reached menopause or undergone hysterectomy, oophorectomy,or tubal ligation) must have a negative urine B-HCG pregnancy test performed 48 hours before initiating the protocol-specified medication.~Able to understand and follow the instructions of the investigator and research personnel.~Able and willing to provide informed consent.~Exclusion Criteria:~* Severe coronary artery disease, uncontrolled hypertension, cardiac ventricular conduction abnormalities, or orthostatic mean blood pressure drop greater than 24mm/Hg, severe chronic obstructive pulmonary disease.~History of renal or hepatic failure. Evidence of hepatic, hematological or renal dysfunction based on judgement of physician.~Active substance abuse. Marijuana dependence as defined in DSM-IV code#304.30. Any psychiatric dysfunction that would, in the opinion of the study investigator, interfere with a participant's ability to comply with the study protocol.~Use of tobacco within the past 30 days. Subjects taking medications which may be vulnerable to drug-drug interactions such as those metabolized by the cytochrome P450 enzyme system.~Blood donation in the past 30 days. Use of smoked marijuana within 48 hours of GCRC admission. Women who are pregnant or breast-feeding may not take part in this study. Unable to read or speak English.

- Gender: ALL
- Minimum Age: 21 Years
- Maximum Age: 45 Years
- Healthy Volunteers: t

Based on this trial design, predict the completion outcome and termination type (if applicable).