Medical Cannabis and the Pharmacist's Role

The pharmacist's role in medical cannabis supply

In every European market where medical cannabis is legally available, the pharmacist sits at a critical point in the supply chain — between the prescribing clinician and the patient. This position carries both legal responsibility and clinical opportunity.

The pharmacist is responsible for verifying the prescription, dispensing the correct product in the correct quantity, ensuring safe storage and handling, providing patient-appropriate information and flagging concerns to the prescribing clinician where necessary. In markets with unlicensed cannabis-based medicinal products (CBMPs), the pharmacist also carries specific responsibilities around controlled drug documentation and record-keeping.

Understanding cannabis product types

Medical cannabis products available in European markets include whole-flower (dried cannabis flowers), cannabis-based oils and extracts, standardised pharmaceutical preparations, and fully licensed medicines such as Epidyolex (cannabidiol) and Sativex (nabiximols).

Licensed medicines follow standard dispensing processes. Unlicensed CBMPs — which represent the majority of prescriptions in the UK, Germany and other markets — require pharmacists to make independent clinical and governance judgements about dispensing appropriateness, particularly where patient records are not available.

Dispensing responsibilities for CBMPs

In the UK, the GPhC's 2025 thematic review of cannabis pharmacy practice found significant variation in dispensing standards across the sector. Common issues included dispensing without access to patient records, insufficient staff competency training and inadequate clinical governance frameworks.

Best practice requires: confirmed prescription validity from a GMC-registered specialist, review of any available patient records, appropriate clinical checks including interactions and contraindications, correct storage of Schedule 2 controlled drugs, accurate controlled drug register entries and patient counselling before supply.

The patient conversation

Many patients receiving medical cannabis prescriptions have limited understanding of the product they are taking. The pharmacist is often the last clinical professional they speak to before using the medicine. A brief, focused conversation covering dosing method, onset time, storage, and what to do if they have concerns can materially improve both safety and adherence.

Pharmacists should also be prepared for questions about driving, drug interactions, employment testing and the difference between medical cannabis and recreational use. These are common patient concerns that do not always get addressed at the prescribing consultation.

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