It’s a prescribed drug that is smoked. Smoking anything can seriously fuck up recovery from a transplant and potentially harm the organ. If he were taking a different anti-nausea drug, we could look it up and see if it’s contraindicated. Many probably are.
This is an interesting abstract of a paper which questions the practice of pushing alcoholic transplant candidates back on the list after a relapse.
And the UK Liver Transplant Group said this about it-
This paper from 2003 also questions the 6 month abstinence from alcohol requirement, saying in part that perhaps a more individualized method should be used-
So I guess currently, depending on where you are, you are not eligible if you are actively drinking, and you might be eligible if you are currently sober.