CBD Spray vs Medical Cannabis: What’s the Difference?

What Is a CBD Spray?

• A CBD spray is a product delivering cannabidiol (CBD) as an oral or sublingual spray — usually in a carrier oil
• Over-the-counter CBD sprays sold in UK health shops contain low concentrations of CBD (typically 1–5%) and are classified as food supplements, not medicines
• They cannot legally make medicinal claims and are not subject to MHRA licensing
• Sativex (nabiximols) is a licensed CBD+THC oromucosal spray that IS a medicine — a different category entirely

The CBD spray category spans a huge quality and regulatory range. A £12 wellness spray from a health shop is legally and pharmacologically worlds apart from a prescribed pharmaceutical product.

Sativex: The Prescription Cannabis Spray

• Sativex contains THC 27mg/ml and CBD 25mg/ml — a roughly 1:1 ratio per spray actuation
• It is licensed in the UK for the treatment of MS spasticity and is available on NHS specialist prescription
• Each actuation delivers 2.7mg THC and 2.5mg CBD; dosing starts at one spray per day and is titrated slowly
• It is the only cannabis-based medicine with a full UK marketing authorisation for MS spasticity

Sativex is often the reference product when evaluating the evidence base for cannabis in MS. Its clinical trial data are among the most robust of any cannabis medicine, which underpins its NICE endorsement for this specific indication.

Over-the-Counter CBD vs Prescribed Medical Cannabis

• OTC CBD sprays are legal but unregulated for medicinal use — batch testing is inconsistent
• Prescribed CBMPs are manufactured to EU-GMP standards with verified potency and purity
• OTC CBD products typically contain insufficient cannabinoid concentrations to produce clinical effects
• Patients seeking therapeutic benefit should not rely on shop-bought CBD products as a substitute for a medical assessment and prescription

Many patients arrive at cannabis clinics after trying OTC CBD without effect. This is often due to subtherapeutic doses and poor-quality products rather than a lack of response to cannabinoids. Pharmaceutical-grade products at appropriate doses tell a very different story.

When Might a CBD Spray Be Appropriate?

• As a very low-dose introductory option for patients with mild anxiety or sleep issues who are not yet ready for a clinical prescription
• As a supplement alongside a prescribed cannabis medicine — though always disclose to your clinician
• For patients who are ineligible for prescription cannabis but want to trial cannabinoids at low risk
• As part of a wellness routine rather than a therapeutic strategy for a diagnosed condition

CBD sprays occupy a legitimate wellness space, but they should not be confused with medicine. If you have a diagnosed condition and are considering cannabinoids therapeutically, a clinical assessment from a specialist is the appropriate starting point.