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Frequently asked questions

What is Cortalex™?

Cortalex™ is a clear cannabidiol (CBD) oil that is pharmaceutically produced to be free of THC*. We believe it is the purest form of CBD available in Canada. Cortalex™ is formulated to be consistent from batch to batch with proven stability.

* <10 ppm THC

Where can I get Cortalex™?

Cortalex™ is available exclusively online at Medical Cannabis by Shoppers. Click here to purchase now.

Where can I find the medical document required to authorize CBD as therapy?

In order to purchase Cortalex™, you will need to have a completed medical document signed by your Healthcare Practitioner. Download a medical document form here. Alternatively, get your medical document completed through telemedicine by visiting HelloMD.

Is paediatric pricing now available for Cortalex™?

We are dedicated to supporting paediatric patients with accessing CBD for their needs. Eligible patients and their caretakers will receive 40% off their Cortalex ™ purchase by calling the Shoppers Cannabis Care team and placing the order for Cortalex™ with an agent. The Shoppers Cannabis Care team can be contacted toll free today at 1-844-633-2627 to speak with a Cortalex™-trained pharmacist to find out more.

What is CBD and how is it different from THC?

The proper name for CBD is cannabidiol. CBD and THC (tetrahydrocannabinol) are chemical compounds known as cannabinoids.

Both CBD and THC affect how different parts of the body communicate with each other. Specifically, THC acts on receptors throughout the body, particularly the brain, which affect brain activity. This is why THC is intoxicating. CBD acts on a range of receptors in the body. By contrast, there are no known intoxicating effects of CBD.

While THC can cause a feeling of intoxication or being “high”, memory loss, slowed response times, and issues with coordination resulting in an impaired ability to drive, CBD alone is not known to cause any of these side effects. Young people under the age of 25 may also experience negative psychiatric, cognitive, or other effects from THC because their brains are still developing(1). Elderly patients frequently have various conditions that impact coordination or cognition, both of which may lead to accidents or mishaps when the individual has consumed THC. That is why we believe having a THC-free* CBD option such as Cortalex™ is so important.

Reference: 1. Canadian Pediatric Society. Cannabis and Canada’s children and youth.
Accessed Sept. 2020 at:

Why choose pharmaceutically produced CBD?

Consistent quality starts with a consistent process. To create the purest CBD formulation, we harness over 30 years of proven experience in developing and manufacturing specialty pharmaceuticals. Our pharmaceutical production processes meet the highest standards for safety and quality. Our cGMP manufacturing processes ensure that the final product meets strict pharmaceutical standards. When our CBD is pharmaceutically produced, every bottle has a consistent composition and is THC free*.

* <10 ppm THC

Are there any adverse side effects of taking Cortalex™?

The only active ingredient in Cortalex™ is cannabidiol. Controlled clinical trials that studies doses of up to 20 mg/kg/day of cannabidiol have reported side effects such as drowsiness, diarrhea, or loss of appetite(1). Some side effects are likely the result of an interaction with another medication the patient is taking. For a more comprehensive list of potential precautions, warnings, and adverse effects please view Health Canada’s Information for Healthcare Professionals guide(2).

(1) Lattanzi S, Brigo F, Trinka E, et al. Efficacy and Safety of Cannabidiol in Epilepsy: A Systematic Review and Meta-Analysis. Drugs. 2018;78(17): 1791-1804.
(2) Abramovici, H, Lamour S-A and Mammen G. Information for Health Care Professionals: Cannabis (marihuana, marijuana) and the cannabinoids. 2018.

What are the most common uses for CBD?

CBD has been shown to be effective in treating seizures associated with the pediatric epilepsies of Dravet and Lennox-Gastaut syndromes and tuberous sclerosis complex(1). There are also claimed benefits of CBD in the treatment of medical conditions including:

» Anxiety
» Sleep disorders
» Depression
» Chronic pain

Clinical studies aimed at exploring the safety and effectiveness of CBD in the treatment of central nervous system disorders and inflammatory disease are ongoing at international university research centers. For a more comprehensive list of potential uses please view Health Canada’s Information of Healthcare Professionals guide(2).

(1) Lattanzi S, Brigo F, Trinka E, et al. Efficacy and Safety of Cannabidiol in Epilepsy: A Systematic Review and Meta-Analysis. Drugs. 2018;78(17): 1791-1804.
(2) “Information for Health Care Professionals: Cannabis (marihuana, marijuana) and the cannabinoids”:

How is Cortalex™ supplied?

Cortalex™ is the first THC-free* extra strength formulation of CBD available in a 100 mg/mL concentration. An oral syringe is provided to permit precise dosing of this flavourless oral solution. Cortalex™ is available exclusively online at Medical Cannabis by Shoppers. Click here to purchase now.

* <10 ppm THC

What is the difference between 105.82 mg/g of CBD and 100 mg/mL of CBD?

There is no difference in CBD quantity or purity; however, Health Canada requires amounts to be reported in mg/g (milligrams per gram) on labels. This new labeling rule came into effect on October 17th, 2020.

For those used to mg/mL (milligrams per millilitre) of CBD, please refer to the table below:


How should Cortalex™ be stored?

Cortalex™ is to be stored at room temperature and away from direct sunlight.

How much Cortalex™ should I take?

Everyone metabolizes CBD differently, so talk to your Healthcare Practitioner about an ideal dose for you. You may need to try different amounts until you get the desired effect. As a general guideline, start low and go slow. Start with a small amount and increase the dose gradually to find what works best for you. If you have any questions about your medication or how you are responding to it, always check with your Healthcare Practitioner.

Once you discover your ideal dose, you can take the same dose every time, thanks to the consistent quality of Cortalex™.

How do I take Cortalex™?

Cortalex™ comes with an easy-to-use precision oral syringe marked with dose amounts in millilitres (ml). Squeeze the measured amount under your tongue and let the oil rest there for 30-60 seconds before swallowing. Take with food.

What to do if I miss a dose of Cortalex™?

Although definitive dosing has not been established, if a dose is missed and you become aware of it within four hours of your scheduled dose time, you can take the missed dose at that time.

If it is more than four hours after the scheduled dosing time, you should wait until the next dose is scheduled and continue with your regular schedule unless instructed otherwise by your Healthcare Practitioner.

What do I do if I have a reaction to Cortalex™?

If you believe you are having an adverse reaction to CBD, you should seek medical attention. Always notify your Healthcare Practitioner about your experiences.

Can I vaporize Cortalex™?

Cortalex™ is a CBD oil meant solely for oral ingestion and is not meant for inhalation nor for use in vaporizers. A precision dosing oral syringe is included with your bottle of Cortalex™ to facilitate oral administration only.

How does Cortalex™ impact sleep?

Some people have reported that CBD has a beneficial impact on their sleep patterns. At higher doses, CBD can cause drowsiness. Your Healthcare Practitioner can help you determine the correct dose of Cortalex™ for you.

Can I take Cortalex™ if I am pregnant or breastfeeding?

Use of Cortalex™ should be avoided if you are pregnant or breastfeeding. For further information, please visit The Society of Obstetricians and Gynaecologists of Canada’s website(1)(2).


Is Cortalex™ addictive?

The active ingredient in Cortalex™ is cannabidiol. Cannabidiol is not known to be addictive based on current evidence.

Is it possible to overdose on CBD?

We recommend not to exceed 100 mg of CBD per day without consulting your health care practitioner. Patients in clinical trials have taken higher doses with mild-moderate side effects.

How is Cortalex™ manufactured to ensure purity and consistency in every bottle?

Cortalex™ is manufactured exclusively for Cardiol Therapeutics Inc. by Dalton Pharma Services. Dalton’s Health Canada approved, FDA registered, cGMP facility meets the highest quality standards set by the pharmaceutical industry. This quality standard ensures consistent purity in every bottle for patients who should not take THC. Cortalex™ is available exclusively online at Medical Cannabis by Shoppers. Click here to purchase now.

Does health insurance cover the cost of Cortalex™?

Some insurance providers may have coverage for Cortalex™. Please contact your insurance provider to learn more about your specific insurance plan.

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