Medical Cannabis Prescription Renewal UK — Complete Guide

How Medical Cannabis Prescriptions Work in the UK

Unlike a standard NHS prescription, UK medical cannabis prescriptions are issued by licensed specialist consultants on a private basis. They are not open-ended — most clinics issue prescriptions covering 28 to 90 days of supply, after which a review appointment is required before the next prescription can be issued. Understanding this cycle helps you plan your medication and budget effectively.

Typical Review Appointment Frequency

In the first three to six months of your prescription, review appointments are usually monthly or every six weeks. This allows your specialist to monitor your response, adjust your dose (titration) and identify any side effects early. Once your medication is well established and stable, many clinics move to quarterly reviews.

Review appointments are typically shorter and less expensive than your initial consultation. Costs range from £30 to £75 for a standard telehealth review at most UK cannabis clinics. Some clinics bundle review costs into a monthly subscription model.

What Happens at a Renewal Appointment

Your specialist will ask you about:

• How well your current medication is managing your symptoms (using standardised outcome measures such as the GAD-7, PHQ-9, or a pain visual analogue scale).
• Any side effects experienced, including impact on sleep, mood, cognition or appetite.
• Changes to other medications you are taking.
• Any significant changes to your health, work situation or lifestyle.

Based on this review, your specialist may maintain your current prescription unchanged, adjust the dose or timing, switch you to a different product, or add a complementary product (for example, a daytime CBD oil alongside a THC-dominant night-time product).

Titration at Renewal: Adjusting Your Dose

Titration is the process of finding the lowest effective dose for your needs. At each renewal appointment, your prescriber will assess whether your current dose is still appropriate. If you are not achieving adequate symptom relief, the dose may be increased incrementally. If you are experiencing side effects, it may be reduced or the formulation changed.

Read our detailed titration guide for a full explanation of this process.

Collecting Your Renewed Prescription

Following your review, your specialist will send a prescription to a licensed UK pharmacy or directly to you in some cases. Specialist cannabis pharmacies can dispense directly to your door by recorded post. Most prescriptions are fulfilled within two to five working days once the prescription has been issued.

Keep your medication in its original pharmacy packaging at all times, as this is your legal proof of prescription. Browse current licensed products to compare what different pharmacies carry.

What If You Miss a Renewal Appointment?

If you miss your review, your clinic cannot issue further prescriptions. This means you may face a gap in supply. Most UK clinics send appointment reminders by email and SMS. If you need to reschedule, do so as soon as possible — aim to book your next review at least a week before your current supply is expected to run out. Running out of medication unexpectedly can cause withdrawal-like symptoms in patients using THC regularly, including disrupted sleep and increased anxiety.

Switching Clinics

You are not obligated to remain with your original clinic. If you are dissatisfied with care, costs or access, you can transfer to another licensed UK cannabis clinic. You will need to request a full summary of your medical notes and prescription history from your current clinic. The new clinic will conduct an onboarding review before issuing a new prescription. Waiting times vary.

Find and compare UK cannabis clinics on LeafMe to identify options suited to your condition and budget.

NHS vs Private: Will This Ever Change?

Currently, medical cannabis is almost entirely privately funded in the UK. NHS prescribing is limited to specific conditions (severe treatment-resistant epilepsy, chemotherapy-induced nausea, and MS spasticity in defined circumstances). Campaigns by patient groups and clinics are ongoing to broaden NHS access, but a significant shift in the near term is not expected. Private prescription costs remain the reality for the vast majority of UK patients.

Key Takeaways

• UK medical cannabis prescriptions require regular review appointments — typically monthly initially, then quarterly.
• Review appointment costs range from £30–£75 at most clinics.
• Doses are adjusted (titrated) at reviews based on your response and side effect profile.
• Book your next review before your current supply runs low to avoid gaps.
• You can switch clinics — request your full medical summary and prescription history when doing so.