Promethazine is a drug with antihistamine, antipsychotic, sedative, sedative-hypnotic, antiemetic, and anticholiengeric properties. It is also commonly paired with opioids, as it will increase the potency of many.
Legality and Availability
Promethazine is available by prescription only, but is not a controlled substance.
In Canada, promethazine is available over-the-counter under various brand names, such as Histantil.
Promethazine is over-the-counter in the UK, France, and other countries in Europe.