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Healthcare Professional Support

Whether you’re new to including medical cannabis in your practice, or have been prescribing for years, we’re here to support you with clinical guidance, access to training and links to the latest research initiatives.

Introduction to Medical Cannabis

The use of medicinal preparations of cannabis can be traced back over five thousand years, making it one of the oldest medicinal plants.

Cannabis

More than 500 natural compounds have been identified and isolated from Cannabis sativa. This includes the medically important cannabinoids, terpenes, flavonoids, and other non-cannabinoid constituents. These compounds are produced in high concentration in the glandular trichomes, which are the hair-like, resin-secreting glands found on the surface of the female cannabis flower.

Cannabinoids

There are more than 100 cannabinoids in cannabis, which interact with the body’s cannabinoid receptors:

 

  • Endocannabinoids – naturally produced in the body

  • Phytocannabinoids – found in many plants, but in highest concentrations in cannabis

  • Synthetic cannabinoids – includes pharmaceuticals that are analogues of THC (e.g., nabilone) or are mixtures of plant-extracted THC and CBD (e.g., nabiximols)

THC (delta-9-Tetrahydrocannabinol) is one of the main active ingredients in cannabis. It is responsible for many of the pharmacological effects of cannabis, including the psychoactive effect.

CBD (cannabidiol) is another of the major active compounds in cannabis, and is non-psychoactive.

Activation of Cannabinoids

Inactive delta-9-tetrahydrocannabinolic acid (THCA) and cannabidiolic acid (CBDA) in the raw plant must be decarboxylated to the neutral phenols (THC and CBD) to interact with the endocannabinoid system. This occurs when dried cannabis flowers are heated, either by vaporizing, smoking, baking, or cooking. Many commercially available oils are decarboxylated to provide consistent and precise dosing.

Terpenes and flavonoids

These are responsible for the variety of scents and flavours of different cannabis varieties. Terpenes may have direct physiologic effects as well as interacting with cannabinoids to create the unique properties of individual cannabis varieties.

 

This is known as the entourage effect, a theory that describes the potential interactions between major cannabinoids, minor cannabinoids, terpenes, and other plant constituents.

Woman Gardening

The Endocannabinoid System

The ECS is a ubiquitous lipid signaling system that plays an important role in the regulation of homeostasis throughout the human body.  The ECS consists of  endogenous receptors, ligands, and metabolic enzymes.
 

It has been implicated in:

  • neural development

  • immune function

  • inflammation

  • appetite

  • metabolism and energy homeostasis

  • cardiovascular function

  • digestion

  • bone development and bone density

  • synaptic plasticity and learning

  • pain, reproduction

  • psychiatric disease

  • psychomotor behaviour

  • memory

  • wake/sleep cycles

  • the regulation of stress and emotional state

Receptors

The ECS consists of the CB1 and CB2 receptors, two endogenous agonists (or endocannabinoids), and endocannabinoid synthesizing and degrading enzymes. CB1 receptors are found in highest concentration in the central and peripheral nervous system and in the gastrointestinal tract. CB2 receptors are found primarily in the immune system, including the tonsils, spleen, lymph nodes, and circulating lymphocytes and neutrophils.

 

 

While present throughout the CNS, the concentration of cannabinoid receptors is low in the brainstem, specifically the area responsible for cardiorespiratory drive. Thus, it is almost impossible to cause cardiorespiratory depression and death using cannabinoids, in contrast to opioids.

Activation of CB1 receptors

This schematic of a neuronal junction shows the activation of CB1 receptors by endocannabinoids. This retrograde signalling regulates neurotransmission in a precise spatio-temporal manner.

 

  1. Endocannabinoids are produced in the postsynaptic terminal in response to cellular demands.

  2. These ligands travel through the synaptic cleft and bind to cannabinoid receptors (e.g., CB1) on the cell surface of the presynaptic terminal.

  3. Once stimulated, cannabinoid receptors activate a signaling cascade that suppresses the release of neurotransmitters into the synaptic cleft (e.g., glutamate, GABA, dopamine, and cholecystokinin).

  4. Neurotransmitter suppression changes the frequency of postsynaptic neuronal firing.

Methods of Administration

Ingestion

Ingesting cannabis oil from an oral dosing syringe or packaged in softgels ensures accurate dosing. It is not recommended to add cannabis oil to baked goods or other food (e.g., yoghurt), as dosing precision is lost.

Inhalation

Vapourizing

Vapourizing is a way to inhale the bioactive components of medical cannabis without burning the plant material. Cannabis is heated to a temperature that volatilizes, without combusting, the cannabinoids and other plant constituents, substantially reducing toxic by-products. It reduces

the harms associated with smoking, is a more efficient way of extracting chemically active constituents, and reduces the loss of cannabinoids in sidestream smoke, which leads to substantial cost saving over smoking.

Smoking

Despite smoking being the most common means of consuming cannabis, this is not a recommended method. Smoking plant substances is associated with serious adverse health effects. Smoking releases toxins and carcinogens, including ammonia, carbon monoxide, tar, and polycyclic aromatic hydrocarbons.

Our Products

We offer a range of products in softgels, ingestible oil, and dried flower formats. Registered patients and their healthcare providers can use our simple colour-coding system to identify the right products to meet therapeutic needs.

View our products
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