Medical Cannabis Flower UK: How to Use It

What Is Medical Cannabis Flower?

• Medical cannabis flower is the dried and cured bud of the female cannabis plant, standardised for cannabinoid content
• It is the most widely prescribed form of medical cannabis in the UK by volume
• Products are categorised by chemotype: THC-dominant, CBD-dominant or balanced
• Common strains include Bedrocan (22% THC), Bediol (6.3% THC / 8% CBD) and Bedica (14% THC)

Unlike street cannabis, medical flower comes sealed, labelled with exact cannabinoid percentages and accompanied by a CoA. This allows patients and clinicians to understand precisely what is being inhaled.

How to Use Medical Cannabis Flower

• Prescribed flower must be vaporised, never smoked — combustion produces harmful by-products and alters the cannabinoid profile
• A dry herb vaporiser heats the flower to between 170°C and 220°C, releasing cannabinoids as vapour
• Starting temperature recommendation: 170–185°C for a lighter, more CBD-rich vapour; 195–210°C for stronger THC delivery
• The prescribed quantity is usually measured in grams per day, as stated on your prescription

Most clinics recommend that patients invest in a quality vaporiser — devices such as the Mighty+, Volcano or Arizer are commonly recommended. The upfront cost is offset by the precision and efficiency they provide.

Titrating Your Dose

• Begin with a single inhalation, wait 10–15 minutes, then assess the effect before taking more
• The onset of vaporised cannabis is typically 5–15 minutes; peak effects occur within 30–60 minutes
• Duration of effect ranges from two to four hours depending on the product and individual metabolism
• Keeping a daily symptom and dose diary helps your clinician optimise the prescription at each follow-up

Titration is the cornerstone of safe medical cannabis use. The goal is to find the lowest dose that delivers consistent, meaningful symptom relief. Rushing this process increases the risk of unnecessary side effects.

Storage and Handling

• Store in the original sealed container in a cool, dark location — a cupboard away from direct light is ideal
• Do not refrigerate unless specifically instructed, as condensation can affect moisture content
• Keep out of reach of children and pets — prescribed cannabis must be treated as a controlled drug in the home
• Use within the expiry date printed on the label; degradation affects potency and flavour over time

Correct storage preserves the terpene profile and cannabinoid integrity of your medication. Even minor changes in humidity or temperature can affect potency, which in turn affects your dosing consistency.