Medical Cannabis Usage, Side Effects & Safety – FAQs

Using medical cannabis for the first time? This FAQ covers everything from how to take it, possible side effects, mixing with other medications or alcohol, safe usage, and legal guidelines.

Usage & Administration

Can I let someone else share my medication if they are also a patient?

No, you cannot share your medical cannabis prescription with anyone else, even if they are also a patient. Prescriptions are individualised based on a doctor's assessment, and sharing medication is both illegal and potentially unsafe.

Each patient must have their own consultation and prescription to ensure they receive the correct dosage and formulation for their condition. If someone needs medical cannabis, they should speak to a specialist doctor to get their own prescription.

Is medical cannabis addictive?

Medical cannabis has a low risk of addiction, especially when used as prescribed by a doctor. However, like any medication, some individuals may develop a dependence, particularly with high-THC products.

How long does cannabis stay in your system?

The time cannabis stays in your system depends on factors like dosage, frequency of use, metabolism, and the type of test used.

General Detection Times:

  • Blood Test – Up to 24 hours (longer for frequent users)
  • Saliva Test – 1 to 3 days for occasional use; longer for regular users
  • Urine Test – Up to 3 days for occasional users, but up to 30+ days for frequent users
  • Hair Test – Can detect cannabis use for up to 90 days

THC, the active compound in cannabis, is stored in fat cells and released slowly over time. Regular users may test positive for longer than occasional users. If you're concerned about drug testing, speak with your doctor for guidance.

What is a good vaporiser for medical cannabis?

The Can Clinic team can recommend suitable medical-grade vaporizers based on your prescription and needs. It's important to use a high-quality, approved device to ensure safe and effective dosing.

If you're unsure which vaporizer to use, speak to your specialist doctor, who can guide you on the best options available.

Can you overdose on cannabis?

No, it is extremely unlikely to experience an overdose from cannabis. However, consuming too much—especially if you are new to medical cannabis or using a high-THC product—can lead to unpleasant effects.

Why is safe cannabis consumption important?

Safe cannabis consumption is crucial because it minimizes health risks while maximizing the benefits of the plant. By choosing methods like vaporizing instead of smoking, you're avoiding harmful chemicals that can damage your lungs and overall health.

This is particularly important for those using cannabis as a treatment for chronic conditions. Safe consumption ensures you're getting the therapeutic effects without the added health concerns. It's about being mindful of how you use cannabis to treat your body with the respect it deserves.

How does vaporizing medical cannabis work?

Vaporizing medical cannabis involves heating the cannabis flower to a temperature that releases the active compounds (like THC and CBD) as a vapor. This process occurs at a lower temperature than smoking, which means that the harmful byproducts associated with combustion are not produced.

When you inhale this vapor, you get the benefits of the cannabinoids and terpenes without the smoke. This makes it a safer and healthier option for patients looking to manage their symptoms with cannabis. The experience can be quite personalized, as different vaporizers allow you to adjust the temperature settings to suit your preferences.

Can I drink alcohol while using medical cannabis?

Yes, but caution is advised. Alcohol and medical cannabis can interact, potentially enhancing each other's effects, such as drowsiness, dizziness, and impaired coordination. This can increase the risk of accidents or other side effects.

At Can Clinic, we recommend discussing alcohol consumption with your healthcare provider to ensure safe use based on your individual treatment plan. If you choose to drink, start with small amounts to understand how the combination affects you.

Can I take medical cannabis with other medications?

Yes, medical cannabis can be taken alongside other medications and may even complement certain treatments. However, as with any medication, interactions can occur, so it's important to consult with your healthcare professional.

At Can Clinic, our experts carefully assess your medical history and current prescriptions to ensure safe and effective use of medical cannabis as part of your treatment plan.

Will medical cannabis make me feel 'high'?

THC-containing products may cause euphoria or a high, depending on the dose. However, CBD-only products do not have psychoactive effects and will not make you feel high.

Is medical cannabis safe for long-term use?

Yes, medical cannabis can be safe for long-term use when prescribed and monitored by healthcare professionals. Many patients benefit from sustained use without significant side effects.

However, as with any long-term treatment, individual responses may vary, and some patients may experience changes such as tolerance or mild dependency.

At Can Clinic, our experts prioritise patient safety, providing ongoing support and monitoring to ensure the most effective and well-tolerated treatment. If you have any concerns, our team is here to help tailor your treatment plan to your needs.

Can I dab THC in the UK?

Currently there are no medical extracts available to dab. This is due to change soon.

Are cannabis edibles legal in the UK?

No, edibles containing THC are illegal in the UK. Only certain medical cannabis products, such as oils and capsules, are available with a prescription.

Can I get THC vape pens in the UK?

No, THC vape pens are illegal under current UK law. Only certain medical cannabis vape cartridges are available through a prescription, but disposable THC vape pens are not permitted.

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Whether you're new to cannabis-based medicines, switching from another medical cannabis clinic, or self-medicating, we'll put you back in control of your health.

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Meet the team

We are a CQC registered clinic, combining a team of qualified specialist physicians, nurses and educators with cannabis industry professionals; joining forces with the sole focus of providing care and excellence for patients wishing to explore cannabinoid therapies.

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Sweta Kothari

Registered Manager

Clinic team

Gabriel Newman

Co-Founder & CEO

Clinic team

Dr Anup Mathew

Lead Psychiatry Specialist

Specialists

Dr Gerard Sinovich

Lead Pain Specialist

Specialists

Niall Ivers

Co-Founder & COO

Clinic team

Joshua Cuby

Co-Founder & CMO

Clinic team

Arjun Trivedi

Clinic Ops Lead

Clinic team

Dahlia Cuby

Clinic Co-Ordinator

Clinic team

Philip Schetter

CEO, Cantourage GmbH

Advisory board

Dr Florian Holzapfel

Founder, Cantourage GmbH

Advisory board

Patrick Hoffmann

Founder, Cantourage GmbH

Advisory board

Norman Ruchholtz

Founder, Cantourage GmbH

Advisory board

Medical cannabis, legally prescribed

“From beginning to end, Cantourage have been professional and very easy to deal with. I have referred myself to a few clinics using their online assessments and literally heard nothing back. Within e weeks I had my medications delivered to my door”

Medical cannabis, legally prescribed