Health Professionals 2018-10-09T17:48:09+00:00


Step 1

complete on behalf of your patient

Step 2

fill out the forms

Step 3

head over to our secure shop


Welcome and thank you for visiting CannTrust!

CannTrust is a federally licensed and regulated producer of medical cannabis, backed by more than 40 years of pharmaceutical and healthcare expertise. At CannTrust, we understand that the decision to condone and prescribe medical cannabis as a therapy is one that may not be entered into lightly. The ongoing evidence-based research surrounding the use of medical cannabis continues to grow on a daily basis and with each study released, we are pleased to note a reduction in stigmas and misconceptions regarding medical cannabis. We are confident that new research will continue to emerge, highlighting the efficacy of medical cannabis as a viable and effective therapy. In order to ensure access of medical cannabis to all who require it, CannTrust is proud to offer CannTrust Access™, the most comprehensive patient assistance program in Canada for the compassionate use of medical cannabis. For more information on this and other means of financial assistance, click here.

In order to help make the best possible recommendations for your patients, prior to prescribing medical cannabis, we encourage all healthcare practitioners to familiarize themselves with the terminology, strains and effects of medical cannabis. Should you have any questions at any time, or would like to learn more, please peruse this site carefully, as it contains valuable resources that will help lead you to informed decisions on behalf of your patients. We also encourage you to speak with one of our specially trained customer care team members at any time, by calling 1-855-RX4-CANN (794-2266).

Fax Us Your Patient’s Medical Document Today! 1-844-295-6641

Introduction to Medical Cannabis

Checking for Relevant Indications

Finding the Right Dosage

Determine the Route of Administration

Selecting a Product for Your Needs

CannTrust™ News


Emerging science supports the use of cannabis for medical purposes. CannTrust has developed a number of quick guides to help you determine if medical cannabis is right for you or your patient, and further, which strain, dosage, and treatment schedule will best meet the needs of each individual.

If you have any questions during the process, please do not hesitate to contact one of our specially trained Customer Care Team Members at any time, by calling 1-855-RX4-CANN (794-2266).


Evidence suggests that the use of cannabis may be beneficial in patients with the following medical conditions:

  • Chronic Pain
  • Multiple Sclerosis (MS)
  • Amyotrophic Lateral Sclerosis (ALS)
  • Spinal cord injuries
  • Nausea and vomiting
  • Anorexia
  • Arthritis (and Rheumatoid Arthritis)
  • Movement disorders
  • Musculoskeletal disorders
  • Glaucoma
  • Anxiety and depression
  • Insomnia
  • Fibromyalgia
  • Irritable Bowel Disease (IBD) (Crohn’s Disease and Ulcerative Colitis)
  • Many other diseases and symptoms

To learn more about the above conditions please visit our news page.

Below is a checklist to review with your patient to determine potential contraindications for medical cannabis use. Please note that the majority of contraindications are for THC. We do not have any known contraindication for CBD.

  • History of allergy to cannabis and/or smoke
  • If your patient is under the age of 25
  • Serious mental disorders such as schizophrenia, psychosis or bipolar disorders
  • Serious liver, kidney, heart or lung disease
  • Planning to conceive or not on a reliable form of contraception
  • Is breastfeeding


The general recommended dosage for medical cannabis is 1-3 g/day of dried cannabis, however, optimal therapeutic results can be obtained with varying dosages and can also differ from individual to individual.

As an ideal practice, it is recommended to begin treating your patients at a low dose (0.5-1 g/day), monitor your patient‘s progress and gradually increase the dose to achieve optimal therapeutic outcomes and reduce possible adverse effects.

For patients with cannabis/cannabinoid usage history, consider their current consumption levels and method of administration (inhalation, oral or a combination) when determining the correct dosage for effective medical cannabis use.


The route of administration impacts the patient‘s reactive onset and duration of effect. Based on the required duration of effect and patient‘s preference, determine which method of administration suits your patient best. The daily dosage of medical cannabis is generally divided into four to five inhalation doses or three to four oral administrations.


Selecting a strain:
When selecting a strain, a patient may choose to collaborate with a specially trained CannTrust customer care team member. A ‘trial and error‘ approach may be taken, whereby different strains may need to be tested to suit their condition best. Under the ACMPR, a practitioner is not required to select strain(s) for the patient.

Alternately, you may select the correct strain for your patient, including varying strains for daytime and night time use. You may also limit the percentage of THC if desired.

Below are the factors for consideration in strain selection:

CBD/THC Ratio:

  • CBD: CBD is the most studied non-euphoric cannabinoid found in the cannabis plant. It is not a cannabinoid receptor agonist (1). It is suggested that CBD may also attenuate the psychotropic effects produced by THC. Results from clinical studies suggest that CBD has anti-inflammatory, analgesic, anti-nauseant, anti-emetic, anti-psychotic, anti-ischemic, anxiolytic and anti-epileptiform effects.
  • THC:THC is the only psychoactive cannabinoid; however studies suggest THC also may be responsible for the analgesic and anti-emetic properties of cannabis. It is recommended that patients start with low THC strains and gradually titrate the dose (start low and go slow).


  • Indica-dominant strains tend to have more calming effects, while sativa-dominant strains tend to have more stimulating effects. Patients generally use more than one strain from the different species to achieve their desired clinical outcome.


  • Terpenes are organic compounds with medicinal properties that are said to act synergistically with cannabinoids to contribute to the “entourage effect” of the plant.