Why Are NHS Cannabis Prescriptions ‘Rare but Not Prohibited’?

If you’ve been trying to understand how cannabis-based medicines fit into the NHS, you’ve probably come across phrases like “rare but not prohibited” when it comes to NHS cannabis prescriptions. What exactly does that mean for patients, prescribers, and the vergemagazine.co future of medicinal cannabis in the UK?

In this blog post, we’ll break down the key changes since the 2018 rescheduling, clarify the difference between legal prescribing and NHS funding, explain why only specialists can prescribe cannabis medicines, and explore why the NHS remains cautious about unlicensed cannabis-based products.

Throughout, we’ll link to trusted resources like medicalcannabis.co.uk (a handy UK clinic directory and comparison site) and releaf.co.uk for more patient-friendly explanations.

The 2018 Rescheduling: What It Changed

Prior to November 2018, cannabis and cannabis-based products for medicinal use (CBPMs) were considered controlled substances under the Schedule 1 category of the Misuse of Drugs Regulations 2001. Simply put, this meant they were illegal to prescribe in a medical setting because Schedule 1 substances were defined as having “no recognized medicinal value.”

The landmark change came when the UK government reclassified cannabis-derived products for medicinal use to Schedule 2—similar to morphine or fentanyl—recognising their potential clinical utility. This rescheduling means:

• Doctors can now legally prescribe cannabis-based medicines in the UK.
• Prescriptions must meet strict rules similar to other controlled drugs, with special licensing and record-keeping.
• The change opened the door to NHS prescriptions but didn’t guarantee funding.

In simple terms a patient might understand: “Since 2018, doctors can prescribe medicinal cannabis legally, but that doesn’t mean it’s automatically available on the NHS.”

NHS Funding Versus Legal Prescribing: The Crucial Difference

Here’s where a lot of confusion arises. Just because a medicine is legal to prescribe doesn’t automatically mean the NHS will pay for it. In the case of NHS cannabis prescriptions, this distinction is critical.

Aspect Legal Prescribing NHS Funding Definition Whether a medicine can be prescribed legally by a doctor under UK law. Whether the NHS will cover the cost of the medicine for the patient. Who decides? Government and licensing agencies (e.g., Home Office, MHRA). Primarily NICE and local CCGs/ICBs (Integrated Care Boards). Is the medicine automatically available? No. Prescribers can legally write prescriptions if allowed. No. Funding decisions weigh evidence on clinical and cost-effectiveness. Example for cannabis Doctors can prescribe medicinal cannabis following the 2018 rescheduling. Only a few exceptional cases are routinely funded by the NHS.

So, when people say NHS cannabis prescriptions are “rare but not prohibited,” they mean that legally, cannabis prescriptions can be written, but NHS funding is scarce because of limited guidance and evidence.

For patients interested in private consultations: platforms like medicalcannabis.co.uk can help you find clinics specialising in cannabis-based medicines, but these services come with a cost and are outside the NHS scheme.

Specialist-Only Prescribing: Why Are General Practitioners Not Usually Involved?

The current NHS framework restricts cannabis prescribing to a small group of specialists. This stems from NHS England’s commissioning policies and prescribing guidelines, which recognise that medicinal cannabis is still a developing area requiring specialist expertise.

Key points about specialist-only prescribing:

• Which specialists? Usually neurologists, pain specialists, oncologists, or paediatric neurologists with relevant experience.
• Why specialist-only? To ensure prescriptions are clinically appropriate, given the complexity of conditions treated and the relative newness of cannabis medicines.
• No self-referral: You cannot just ask your GP for an NHS cannabis prescription. Usually, you need referral to a specialist who may consider it after other treatments fail.
• Guidance and restrictions: NHS England issued a policy document detailing criteria for prescribing cannabis-based products for medicinal use, emphasising cautious use in specific conditions like severe epilepsy.

What this means for a patient is: “You’ll typically need to see a specialist who knows about medicinal cannabis for your condition, and not all specialists are able or willing to prescribe it on the NHS.”

Unlicensed Cannabis-Based Medicines and NHS Caution

One key reason the NHS remains cautious about broad cannabis prescribing is that most cannabis-based medicines currently available fall under the category of unlicensed or “specials.” This means:

• They haven’t undergone the same rigorous approval process as licensed medicines.
• Evidence for clinical effectiveness is based on limited or emerging data, often from small or early-stage studies.
• Quality, standardisation, and consistency across products can vary more than for licensed medicines.

Because of these factors, NHS England tends to take a conservative approach, only supporting cannabis-based medicines in situations where strong evidence exists or clinical need is dire. The cautious stance also reflects concerns about funding costly treatments with uncertain long-term outcomes.

Again, from a patient perspective: “Even if a cannabis medicine could help me, the NHS might be hesitant to prescribe it because the drug isn’t fully licensed and the evidence isn’t strong enough yet.”

Where Can Patients Find More Information and Support?

If you’re considering cannabis-based medicines, here are some helpful resources:

• medicalcannabis.co.uk – A UK-based directory of clinics specialising in cannabis medicines, useful for private consultations and patient reviews.
• releaf.co.uk – Offers clear, patient-friendly guides explaining NHS rights, access pathways, and what to expect from cannabis prescribing.
• NHS Choices – General information about cannabis-based products for medicinal use and links to official guidelines.
• Consult your specialist if you believe cannabis medicines might be relevant for your condition.

Summary: Why NHS Cannabis Prescriptions Are ‘Rare but Not Prohibited’

1. 2018 Rescheduling: Made cannabis medicines legally prescribable, moving them out of Schedule 1 into Schedule 2 controlled drugs.
2. Legal vs Funding: Just because prescribing is legal doesn’t mean the NHS routinely pays for these medicines; NHS funding remains limited.
3. Specialist Prescribing Only: NHS cannabis prescriptions require specialist approval — GPs generally don’t prescribe these medicines.
4. Unlicensed Status & Evidence: Most cannabis medicines are unlicensed, with limited strong evidence, prompting NHS caution.

In short, you can get a cannabis prescription on the NHS, but it’s uncommon and reserved for exceptional cases managed by specialists. Meanwhile, many patients turn to private clinics listed on sites like medicalcannabis.co.uk, but these come with out-of-pocket costs.

If you’re navigating this complex area, always check what your NHS specialist says, and look up the latest NHS England guidance and patient-focused resources such as the ones we linked above.