Last updated: October 2026
There is no established dose of CBD for MS. CBD on its own hasn’t been shown to help MS symptoms in controlled trials. The only cannabis medicine NICE recommends for MS is Sativex, a prescription THC and CBD spray for muscle stiffness and spasms, which a specialist builds up to at most 12 sprays a day.
Below: the dose numbers side by side, what the research shows, how Sativex works on the NHS, what the MS Society says, CBD vs Sativex vs illegal cannabis, interactions with MS medicines, side effects, and questions to take to your MS nurse.
Looking for an everyday CBD supplement, not an MS treatment? Our Broad Spectrum CBD Oil is broad spectrum CBD in MCT oil with 0% THC, and our Broad Spectrum CBD Capsules come pre-measured at 10mg or 25mg. CBD isn’t a treatment for MS or its symptoms, and it never replaces anything your MS team prescribes.
What dose of CBD for MS?
There’s no established dose of CBD alone for MS, because no trial has found a CBD-only dose that works. The honest answer is that nobody can tell you “take X mg for MS”, and you should be wary of anyone who does.
What we do have are some reference numbers. They come from very different products, so they aren’t interchangeable:
| Product or study | CBD per day | THC per day | What it tells us |
|---|---|---|---|
| Sativex, 1 spray (prescription) | 2.5mg | 2.7mg | Each spray is a roughly equal mix of THC and CBD |
| Sativex, typical dose (median 8 sprays in MS trials) | 20mg | 21.6mg | Set by a specialist over about 2 weeks |
| Sativex, maximum (12 sprays) | 30mg | 32.4mg | Higher doses aren’t recommended |
| Danish trial, CBD-only group (2023) | Up to 45mg | None | No better than placebo for spasticity or nerve pain |
| FSA advice for CBD food supplements | 10mg | Trace only | Precautionary figure for healthy adults, not a treatment dose |
Two things stand out. First, the CBD in a full day of Sativex is modest, and the THC is thought to matter for its effect on spasticity. Second, when researchers tested CBD on its own in people with MS, it didn’t beat placebo. So copying Sativex numbers with a CBD oil won’t reproduce Sativex.
If you take any prescribed medicine, which most people with MS do, the FSA’s consumer advice is not to use CBD unless under medical direction. That makes your MS team, not a dosing chart, the right starting point. Our general guide to how much CBD to take is written for healthy adults, not for MS.
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 in that review tested CBD alone, so these results can’t be applied to CBD supplements.
Has CBD alone been tested in MS?
Only in small studies:
- Danish trial, 2023. 134 people (119 with MS, 15 with spinal cord injury) were randomised to THC, CBD (up to 45mg a day), THC and CBD together, or placebo for six weeks. None of the active groups did significantly better than placebo for nerve pain or spasticity. The trial recruited fewer people than planned because of COVID-19, so it can’t rule out a small effect.
- UK crossover study, 2003. 24 people (18 with MS) tried THC, CBD and combined extracts for two weeks each. Some symptoms improved compared with placebo, but it was tiny, short, and used research extracts rather than shop products. Larger trials since then have focused on the THC and CBD combination.
- UK Medical Cannabis Registry, 2025. 203 people with MS on prescribed cannabis products reported better quality-of-life scores over 24 months. There was no comparison group, most had used cannabis before, and the authors work for a cannabis clinic, so it can’t show cause and effect.
For the wider picture on CBD and pain, see what the CBD pain trials actually show.
Sativex on the NHS: who gets it and how it’s dosed
Sativex (nabiximols) is a licensed prescription medicine, not a supplement. The information below explains how it is used; your specialist decides whether it suits you and sets your dose.
Who can get it
- NICE recommends offering adults with MS a 4-week trial of THC:CBD spray for moderate to severe spasticity when other medicines for spasticity haven’t worked.
- It continues only if spasticity symptoms improve by at least 20% on a 0 to 10 scale after 4 weeks.
- The manufacturer funds the first three 10ml vials under a “pay for responders” scheme, so the NHS pays only if it works for you.
- It must be started and supervised by a doctor with specialist expertise in MS spasticity.
That 20% rule reflects the evidence. In the main enriched-design trial, 272 of 572 people (just under half) reached a 20% improvement in the first 4 weeks, and only they went on to the placebo-controlled phase. Sativex works for some people, not everyone.
How the dose is built up
The product information gives a 2-week titration, adding sprays gradually and leaving at least 15 minutes between sprays:
| Day | Morning sprays | Evening sprays | Total |
|---|---|---|---|
| 1 and 2 | 0 | 1 | 1 |
| 3 and 4 | 0 | 2 | 2 |
| 7 | 1 | 4 | 5 |
| 10 | 3 | 5 | 8 |
| 14 | 5 | 7 | 12 (maximum) |
Many people settle below the maximum: the median in MS trials was 8 sprays a day. Sativex is used alongside existing spasticity medicine, contains alcohol, isn’t for use while breastfeeding, and can affect driving. More on how prescribing works in our guide to medical cannabis in the UK and prescription vs over-the-counter CBD.
What the MS Society says
The MS Society’s cannabis page is a fair summary of where things stand:
- In its 2014 survey, one in five people with MS said they had used cannabis for their symptoms, and said it helped with spasms, stiffness or pain.
- Sativex is approved on the NHS for moderate to severe spasticity, but only if other treatments haven’t worked, and it doesn’t work for everyone.
- On CBD oil, it notes that you can buy it legally as a food supplement, but “there’s no guarantee these oils are of good quality or provide any health benefits”.
- It also points out that no medicine containing only CBD is recommended for MS, and that NICE recommended only Sativex, which contains THC as well as CBD.
The NHS says much the same: shop-bought CBD products tend to contain small amounts of CBD, so it’s not clear what effect they would have. We agree with both. If CBD has a place in your life, it’s as an everyday supplement, not as MS care.
CBD oil vs Sativex vs illegal cannabis
| CBD supplement | Sativex | Illegal cannabis | |
|---|---|---|---|
| What’s in it | CBD with no more than trace THC (ours: 0% THC) | 2.5mg CBD and 2.7mg THC per spray | Unknown strength and content |
| Legal status | Legal food supplement under FSA rules | Licensed prescription medicine | Class B drug: illegal to possess or supply |
| How you get it | Shops and online | MS specialist only, after other treatments | Not legally available |
| Evidence in MS | None for MS symptoms | Moderate certainty for spasticity | One small trial of inhaled cannabis; street products are untested |
| Gets you high? | No | It contains THC, so it can; the dose is built up slowly | Usually |
| Quality control | Varies: choose lab-tested brands | Pharmaceutical standard | None |
| Main risks | Drowsiness, interactions, liver changes at high doses | Dizziness, fatigue, mood effects, falls | Unknown content, potentially dangerous, and illegal |
The NHS warns that many cannabis products sold online have unknown quality and content, may be illegal in the UK and could be dangerous. For the legal detail, see CBD vs THC: the key differences and is CBD legal in the UK?
CBD and MS medicines
CBD is broken down by liver enzymes (mainly CYP2C19 and CYP3A4), it can change levels of some medicines, and it can cause drowsiness of its own. A pharmacology review of licensed CBD products found the potential for drug interactions with common medicines is high. Here’s how that applies to medicines often used in MS:
| Medicine group | Examples | What to know |
|---|---|---|
| Spasticity medicines | Baclofen, tizanidine | Baclofen commonly causes tiredness and dizziness; CBD may add to it, which matters for balance and falls |
| Nerve pain medicines | Gabapentin, pregabalin, amitriptyline | The NHS warns supplements that make you drowsy or dizzy can make gabapentin’s side effects worse |
| Disease-modifying therapies (DMTs) | Tablets, injections and infusions | These reduce relapses, so protecting them matters most. Combinations vary, so ask your MS team or pharmacist about your specific DMT before starting CBD, and mention CBD at any blood tests |
| Mood and sleep medicines | Antidepressants, sleeping tablets | Possible extra drowsiness; ask your pharmacist |
| Sativex | Nabiximols spray | Already contains CBD. Don’t add a CBD supplement unless your specialist agrees |
The FSA advises anyone taking medication or who is immunosuppressed to consult a healthcare professional before using CBD. Never stop or reduce a prescribed medicine to make room for CBD. More detail in can CBD interact with medication?
Side effects to watch for
- Tiredness and drowsiness. Fatigue is one of the most common MS symptoms, so notice whether you feel more tired than usual.
- Dizziness or unsteadiness. Take extra care if your balance is already affected.
- Upset stomach, diarrhoea or appetite changes.
- Liver enzyme changes. Seen mainly at the high doses used in prescription CBD; mention CBD if you have liver blood tests. See is CBD bad for your liver?
With Sativex, the product information lists dizziness and fatigue as the most common side effects in the first 4 weeks, plus nausea, dry mouth, mouth soreness, falls and mood changes. Stop and speak to your specialist if you notice changes in mood or thinking. For CBD generally, see CBD side effects.
If you still want to try a CBD supplement
Many people with MS use CBD for general wellbeing. That’s a personal choice, but CBD supplements:
- aren’t the same as Sativex, and contain no meaningful THC
- haven’t been shown to help spasticity, pain, fatigue or MS progression
- must not replace disease-modifying treatment or any prescribed medicine
Talk to your MS nurse or pharmacist first, and tell them the exact product and amount. If they’re happy, choose a product that is:
- on the FSA’s public list of CBD products linked to novel food applications
- third-party lab tested, with reports you can see
- broad spectrum with 0% THC, if you want to avoid THC (see full vs broad spectrum vs isolate)
- sold without promises to treat MS, which no legal supplement can make (see how to avoid CBD scams)
Our Broad Spectrum CBD Oil contains just broad spectrum CBD and MCT oil (about 2.5mg, 5mg or 10mg per drop depending on strength), and our capsules are 10mg or 25mg each. Both are 0% THC, made in the UK and on the FSA public list. CBD isn’t a treatment for MS or its symptoms.
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.
We don’t recommend our products during pregnancy or breastfeeding. All Evopure products are for adults (18+) only. If you drive or face workplace drug testing, read CBD and driving and does CBD show up on a drug test? For choosing between brands, see how to choose a CBD oil.
Questions to ask your MS nurse
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. Useful questions to take along:
- Have we tried the usual spasticity treatments, and am I eligible for a 4-week Sativex trial?
- Is it safe to take a CBD supplement with my disease-modifying therapy and other medicines?
- Do my medicines need liver blood tests, and should I mention CBD when I have them?
- Could CBD make my fatigue, dizziness or balance worse?
- If I try CBD, what amount would you be comfortable with, and how should I record any changes?
- Are there non-medicine options, such as stretching or physiotherapy, I should try first?
The MS Society also has information and a helpline. See the NHS page on multiple sclerosis. For sleep and pain more broadly, see CBD for sleep and best CBD oil for pain management UK.
For another neurological condition people ask about, see what the trials show on CBD and Parkinson’s.
FAQs
Does CBD help MS?
CBD alone hasn’t been shown to help MS symptoms in controlled trials. 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. A trial of CBD on its own at up to 45mg a day found no benefit over placebo. Sativex, the prescription spray, goes up to 12 sprays a day (30mg CBD with 32.4mg THC). Talk to your MS team before trying any CBD.
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 and continues only if symptoms improve by at least 20%.
Is CBD oil the same as Sativex?
No. Sativex is a licensed medicine containing THC and CBD. CBD supplements contain no meaningful 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 dizziness and may interact with some MS medicines.
Is CBD oil legal for people with MS in the UK?
Yes. CBD supplements are legal to buy as food supplements. Cannabis containing THC is a Class B drug unless prescribed, as Sativex is.
Can CBD slow down MS?
No. There’s no evidence CBD slows MS or prevents relapses. Disease-modifying therapies prescribed by your MS team are the medicines that reduce how many relapses you have and how serious they are.
Can CBD help MS fatigue?
There’s no good evidence that it does, and CBD can cause tiredness itself. Talk to your MS team about fatigue: the NHS offers advice and support, including cognitive behavioural therapy, to help manage it.
Can I drive if I use Sativex or CBD?
Don’t drive on Sativex until you know how it affects you, and never if you feel dizzy or drowsy. It’s illegal to drive if any medicine makes you unfit to drive. CBD with 0% THC shouldn’t contain the THC that roadside tests screen for, but avoid driving if it makes you drowsy.
Sources
- Filippini G et al. Cannabis and cannabinoids for symptomatic treatment for people with multiple sclerosis. Cochrane Database Syst Rev, 2022. PMID 35510826.
- Hansen JS et al. Cannabis-based medicine for neuropathic pain and spasticity: a multicenter, randomized, double-blinded, placebo-controlled trial. Pharmaceuticals, 2023. PMID 37630995.
- Novotna A et al. A randomized, double-blind, placebo-controlled, parallel-group, enriched-design study of nabiximols (Sativex) as add-on therapy in subjects with refractory spasticity caused by multiple sclerosis. Eur J Neurol, 2011. PMID 21362108.
- Wade DT et al. A preliminary controlled study to determine whether whole-plant cannabis extracts can improve intractable neurogenic symptoms. Clin Rehabil, 2003. PMID 12617376.
- Shah Y et al. UK Medical Cannabis Registry: an updated analysis of cannabis-based medicinal products for multiple sclerosis. Med Cannabis Cannabinoids, 2025. PMID 41357430.
- Brown JD, Winterstein AG. Potential adverse drug events and drug-drug interactions with medical and consumer cannabidiol (CBD) use. J Clin Med, 2019. PMID 31288397.
- NICE. Cannabis-based medicinal products (NG144).
- emc. Sativex oromucosal spray: summary of product characteristics.
- NHS. Medical cannabis (and cannabis oils).
- NHS. Baclofen and taking gabapentin with other medicines and herbal supplements.
- MS Society. Cannabis for MS.
- Food Standards Agency. Cannabidiol (CBD) guidance.
- GOV.UK. Drugs penalties and drug driving law.
This guide is general information, not medical advice. Always follow the advice of your MS team.
