"Romeo" died of phentanyl poisoning by
wearing a phentanyl patch on his hand and taking phentanyl tablets. Phentanyl, a synthetic narcotic, is not absorbed when taken orally. Also the drug cisapride (brand name Propulsid), which would increase the levels of phentanyl in the blood, was taken off the market in 2000.
When the CSIs turn "Juliet" over, she is clearly seen blinking.