Morphine Drug Driving Limit

Morphine Drug Driving Limit = 80 µg/L

Morphine is sold under nearly a hundred trade names. It is an opioid analgesic drug, and the main psychoactive chemical in opium. In clinical medicine, morphine is regarded as the gold standard in management of severe pain.


Morphine is a potentially highly addictive substance. It can cause psychological dependence and physical dependence as well as tolerance. In the presence of pain and the other disorders for which morphine is indicated, a combination of psychological and physiological factors tend to prevent true addiction from developing, although physical dependence and tolerance will develop with protracted opioid therapy.


The euphoria, comprehensive alleviation of distress and therefore all aspects of suffering, promotion of sociability and empathy, “body high”, provided by narcotic drugs including the opioids can cause the use of high doses in the absence of pain for a protracted period, which can impart a morbid craving for the drug in the user.

Morphine is known on the street and elsewhere as M, sister morphine, Vitamin M, morpho, etc.

MS Contin tablets are known as misties, and the 100 mg extended-release tablets as greys and blockbusters. The “speedball” can use morphine as the narcotic component, which is combined with cocaine, amphetamines, methylphenidate, or similar drugs. “Blue Velvet” is a combination of morphine with the antihistamine tripelennamine (Pyrabenzamine, PBZ, Pelamine) taken by injection, or less commonly the mixture when swallowed or used as a retention enema; the name is also known to refer to a combination of tripelennamine and dihydrocodeine or codeine tablets or syrups taken by mouth. “Morphia” is an older official term for morphine also used as a slang term. “Driving Miss Emma” is intravenous administration of morphine. Multi-purpose tablets (readily soluble hypodermic tablets that can also be swallowed or dissolved under the tongue or betwixt the cheek and jaw) are known, as are some brands of hydromorphone, as Shake & Bake or Shake & Shoot.

Morphine can be smoked, especially diacetylmorphine (heroin), the most common method being the “Chasing The Dragon” method.