http://www.ncbi.nlm.nih.gov/pubmed/17995595
Potent inhibition of human cytochrome P450 3A4, 2D6, and 2C9 isoenzymes by grapefruit juice and its furocoumarins.
Girennavar B, Jayaprakasha GK, Patil BS.
Source
Vegetable and Fruit Improvement Center, Dept. of Horticultural Sciences, Texas A &M...
Would this be a possible for the increase strength at lower doses, for the internal use of hash oil for fighting cancer? It's hard to come by in my state in any form. Can you point to research terms, I could use to further investigate this?