What is a common phrase describing the state of heroin users?

The phrase "on the nod" is commonly used to describe the state of heroin users experiencing the effects of the drug. This state is characterized by drowsiness and a semi-conscious state, where individuals may appear to be oscillating between alertness and sleep. The term vividly captures the characteristic head bobbing that can occur as users alternate between consciousness and drifting off into a nodding sleep.

This description stands in stark contrast to other states of awareness. For example, "feeling euphoric" might refer to a positive emotional state, which, while related to opioid use, does not specifically encompass the physical manifestation of being "on the nod." Similarly, being "wide awake" or "feeling hyper" indicates alertness and energy, which are not representative of the typical effects of heroin, particularly its sedative and depressant qualities. Thus, "on the nod" effectively encapsulates the distinct and recognizable altered state associated with heroin use.