Last updated: October 2026
The best evidence in MS is for Sativex, a prescription spray combining THC and CBD, which helps some people with muscle stiffness and spasms. CBD on its own hasn’t been properly tested for MS, so there’s no established CBD dose. NICE recommends a 4-week trial of the THC and CBD spray when other spasticity treatments haven’t worked.
Below: what the research shows, Sativex on the NHS, what a “dose” means, CBD supplements, interactions, and talking to your MS team.
What the research shows
A 2022 Cochrane review looked at 25 trials with 3,763 people with MS. Most tested nabiximols (Sativex), a 1:1 THC and CBD spray; others tested THC-like medicines or cannabis.
| Outcome | What the review found |
|---|---|
| Spasticity (stiffness and spasms) | Nabiximols probably helps more people feel an important reduction: about 216 more per 1,000 than placebo (moderate certainty) |
| Overall feeling of improvement | Probably more people report feeling much better (moderate certainty) |
| Nerve pain | Uncertain; very little evidence |
| Quality of life | Little or no difference |
| Side effects | More dizziness, drowsiness and mood or psychiatric side effects; slightly more people stopped treatment |
None of the trials tested CBD alone, so these results can’t be applied to CBD supplements.
Sativex on the NHS
NICE recommends offering adults with MS a 4-week trial of THC:CBD spray for moderate to severe spasticity if other medicines haven’t worked. It continues only if symptoms improve by at least 20% on a 0 to 10 scale. It must be started by a specialist. See medical cannabis in the UK.
What dose of CBD for MS?
There’s no established dose of CBD alone for MS, because it hasn’t been tested properly. For comparison, each Sativex spray contains 2.7mg THC and 2.5mg CBD, with the dose built up gradually by a specialist; the CBD amount per day is modest, and the THC is thought to matter for the effect.
If you choose to try a CBD supplement for general wellbeing, start around 10mg a day. The FSA’s 10mg a day figure is precautionary advice rather than a legal limit, set while longer-term safety research continues. At Evopure we think it is a very cautious figure, and many adults use more. If you go above it, increase slowly, and check with your GP or pharmacist first if you take any medication. See how much CBD to take.
CBD supplements and MS
Many people with MS use CBD for sleep, stress or general wellbeing. That’s a personal choice, but CBD supplements:
- aren’t the same as Sativex, and contain no THC
- haven’t been shown to help spasticity, pain or MS progression
- must not replace disease-modifying treatment or prescribed medicines
See CBD for sleep, and choose a lab-tested product. See how to choose a CBD oil.
Side effects and interactions
- CBD can interact with medicines commonly used in MS, including some for spasticity, nerve pain and mood, and can add to drowsiness from baclofen, gabapentin, pregabalin or amitriptyline.
- Tell your MS nurse or pharmacist before starting CBD. See can CBD interact with medication?
- Possible side effects include tiredness, dry mouth and an upset stomach.
- Fatigue and balance problems are common in MS, so watch for extra drowsiness.
Talking to your MS team
If stiffness or spasms are a problem, ask your MS nurse or neurologist about all the options, including physiotherapy, medicines such as baclofen, and whether a Sativex trial is suitable. The MS Society also has information and a helpline. See the NHS page on multiple sclerosis.
FAQs
Does CBD help MS?
CBD alone hasn’t been properly tested in MS. The evidence is for Sativex, a prescription THC and CBD spray that helps some people with spasticity.
What dose of CBD should I take for MS?
There’s no established dose of CBD alone for MS. If you use a supplement, start around 10mg a day and talk to your MS team.
Can I get Sativex on the NHS?
NICE recommends a 4-week trial for adults with moderate to severe MS spasticity when other medicines haven’t worked. It’s started by a specialist.
Is CBD oil the same as Sativex?
No. Sativex is a licensed medicine containing THC and CBD. CBD supplements contain no THC and aren’t licensed to treat MS.
Can I take CBD with baclofen or gabapentin?
Ask your pharmacist first. CBD can add to drowsiness and may interact with some MS medicines.
Sources
- Filippini G et al. Cannabis and cannabinoids for symptomatic treatment for people with multiple sclerosis. Cochrane Database Syst Rev, 2022.
- NICE. Cannabis-based medicinal products (NG144).
- NHS. Medical cannabis (and cannabis oils).
- emc. Sativex oromucosal spray: summary of product characteristics.
This guide is general information, not medical advice.
