Prescription drugs exist, but they are much more expensive than pot. In relieving nausea and vomiting, he counts about 10 agents that work to some degree. The right drug, he says, can eliminate 90 percent of nausea. Sometime this year, Kanof says, the National Academy of Sciences' Institute of Medicine is expected to issue a report on its review of the therapeutic use of marijuana. He does not expect much fanfare.
More research is needed.