Why Can a Legal Prescribed Medicine Still Feel Unaffordable?

In the UK, having a medicine prescribed by your doctor often means you pay a standard prescription charge or sometimes nothing at all. Yet, many patients find that some legal prescribed medicines can still feel unaffordable. This blog post explains why, with a focus on prescribed cannabis medicines—a regulated treatment often misunderstood, especially when it comes to how they’re used and paid for.
Understanding the Cost: Patients Pay Full Cost Without Price Pressure
Most NHS prescriptions in England have a fixed charge (£9.65 as of mid-2024), but some medicines are exempt or only require a co-pay. However, not all prescribed medicines fall under this subsidized system.

Key point: Patients paying for certain legal prescribed medicines often cover the entire cost themselves. This can be because these treatments aren’t routinely funded by the NHS or require special arrangements, leading to:
Recurring monthly spend: Medicines needed long-term, like some cannabis-based products, require ongoing payments. No price pressure: Without NHS pricing agreements or bulk purchasing, private prescriptions can be sold at higher market rates, reflecting actual supply costs and pharmacy services. Why does this happen?
Medicines that aren’t on the NHS formulary or only prescribed in exceptional circumstances tend to be priced differently. Prescribed cannabis medicines fall into this category. Although legal and prescribed by authorised clinicians, their supply is limited, manufacturing complex, and the regulatory environment strict. All these factors contribute to higher out-of-pocket costs for patients.
Prescribed Cannabis in the UK: Vaporised, Not Smoked
A common misconception is that prescribed cannabis is "smokable," but this is incorrect in the UK.
What does the law say?
Since November 2018, cannabis-based products for medicinal use can be legally prescribed by specialist doctors in the UK. However, the controlled drugs licensing and pharmacy regulation do not permit patients to smoke cannabis as a medicine.

Instead, these medicines are usually:
- Capsules, oils, or tinctures taken orally - Vaporised using a medical device specifically designed for dosing cannabis extracts Why vapour and not smoke?
Vaporisation gently heats cannabis medical cannabis device cost uk https://smoothdecorator.com/can-i-use-the-same-device-for-cannabis-flower-and-oil/ extracts to release active ingredients as a vapour—without burning plant material. This avoids combustion, which produces harmful by-products. Smoking introduces harmful toxins from burnt plant material, increasing health risks.
Combustion by-products: Tar, carbon monoxide, and carcinogens. Vaporisation: Provides a cleaner, more controlled dose with fewer harmful substances.
Because prescribed cannabis is a legal medicine, it must adhere to pharmaceutical standards. Smoking does not meet these safety and quality requirements.
Device as an Essential Part of Treatment
Often overlooked, the device used to vaporise cannabis medicine isn’t an optional extra—it's an integral part of the treatment regimen. This has several implications:
Consistent dosing: Medical vaporizers deliver precise, repeatable doses unlike informal methods. Patient safety: Devices are regulated, clean, and designed to prevent overheating or contamination. Ongoing costs: Devices may require batteries, replacement parts, or maintenance, adding to recurring expenses.
Many patients initially consider only the medicine cost, but device costs also need accounting when planning budgets for treatment.
Pharmacy and GPhC Regulation
Pharmacies dispensing prescribed cannabis medicines and vapour devices must comply with strict regulatory frameworks:
General Pharmaceutical Council (GPhC): Regulates pharmacy professionals ensuring standards in dispensing, storage, and patient counselling. Controlled Drug legislation: Requires secure storage, accurate record-keeping, and handling to prevent misuse or diversion. Prescribing governance: Only specialist doctors with proper licenses can prescribe cannabis medicines. Breaking Down the Full Cost: A Realistic Picture
Let’s see an example cost breakdown for a legal prescribed cannabis medicine requiring a vaporiser device.
Item Typical Cost (GBP) Payment Frequency Cannabis medicine (oil or capsules) £250 - £350 Monthly Medical vaporiser device £200 - £400 One-off / replaced every 1-2 years Device maintenance and consumables (batteries, cartridges) £20 - £40 Monthly Pharmacy dispensing fees £10 - £30 Monthly
Total initial month spend: £460 - £780
Subsequent monthly spend: £280 - £420
For many patients, these costs represent a significant financial commitment. Unlike common NHS prescriptions with fixed charges, there is no subsidisation here.
What Does This Mean for Patients?
Despite being legal and prescribed by a doctor, medicines like cannabis-based products can still feel out of reach due to:
Patients bearing the full cost – no NHS subsidy or standard pricing to lower costs. Recurring monthly payments – lasting months or years for chronic conditions. Additional device and maintenance costs – essential for safe and effective use. Lack of competitive price pressure – specialist product supply limits driving prices up.
It’s important for patients to discuss affordability upfront with their clinicians and pharmacists, explore potential benefits vs cost, and consider long-term budgeting.
Final Takeaway
A legal prescribed medicine’s affordability isn’t just about whether it’s on prescription—it includes how it’s administered, regulatory controls, and the economics of supply.
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For UK patients prescribed cannabis medicines, vapour—not smoke—is the mode of treatment. The prescription cost extends beyond just the drug to include the device and ongoing maintenance.

Understanding these nuances helps patients and carers set realistic expectations and seek advice tailored to their needs, without confusion or hidden costs.

Remember: always consult your doctor and pharmacist for detailed treatment cost breakdowns and regulatory guidance.