published studies of delta 9-tetrahydrocannabinol ( thc ) and marihuana in the control of nausea and vomiting in cancer patients leave many unanswered questions about dosage , time of administration , technique of use , use in pediatric and geriatric patients , and continuous use for extended periods .
C0039663
delta 9-tetrahydrocannabinol
C0042963
vomiting