Last updated: October 2026
CBD (cannabidiol) is a natural compound from the hemp plant. Unlike THC, it doesn’t get you high. It’s sold legally in the UK as a food supplement. The FSA advises healthy adults to take no more than 10mg a day. Start low, take it with food, and choose broad spectrum products with a lab report.
This complete beginner’s guide covers what CBD is, how it differs from THC, whether it’s legal, how it works, what it feels like, the types and formats, how much to take, side effects, and how to choose a good product.
What is CBD?
CBD, short for cannabidiol, is one of more than 100 compounds called cannabinoids found in the cannabis plant. The CBD in UK supplements comes from hemp: varieties of cannabis grown to contain very little THC, the compound that causes a high.
CBD is extracted from hemp, usually with CO2 or ethanol, then refined and mixed with a carrier oil such as MCT (coconut) oil to make CBD oil. It’s also put into capsules, balms, gummies and drinks. See how CBD is extracted and hemp oil vs CBD oil.
CBD vs THC
| CBD | THC | |
|---|---|---|
| Gets you high? | No | Yes |
| Legal status in the UK | Legal as a food supplement if it meets the rules | A controlled drug |
| Found in | Hemp and cannabis | Mainly cannabis grown for its THC |
| Shows on a drug test? | Tests look for THC, not CBD, but some CBD products contain traces of THC | Yes |
Is CBD legal in the UK?
Yes, if it meets the rules. CBD food supplements, such as oils and capsules, are classed as “novel foods”. To be sold legally in England and Wales, a product must be linked to a novel food application on the Food Standards Agency’s public list. THC and some related compounds are controlled drugs, so legal products should contain no controlled THC.
In 2026 the FSA began recommending the first full CBD authorisations. Our CBD products are on the FSA’s public list, linked to validated applications. See is CBD legal in the UK? and the FSA’s first CBD approvals explained.
CBD balms and creams for the skin are covered by cosmetics rules instead. Prescription cannabis-based medicines are a separate category, prescribed only by specialist doctors.
How does CBD work?
Your body has an endocannabinoid system: a network of receptors and chemical messengers involved in many processes, including sleep, mood, appetite and how you feel discomfort. Unlike THC, CBD doesn’t fit neatly into the main cannabinoid receptors. It appears to act in several indirect ways, including slowing the breakdown of the body’s own endocannabinoids and acting on other receptors such as serotonin receptors.
Scientists are still working out exactly how CBD acts in people, and much of the early research is in cells and animals. See how long CBD takes to work.
What does CBD feel like?
CBD won’t make you high, and many people feel nothing dramatic at all, especially at low amounts. People who notice an effect usually describe it as subtle: feeling a little more settled or relaxed. Some notice drowsiness, so try it first at home in the evening. Effects build with regular use rather than from a single dose for many people. See CBD tolerance.
Types of CBD: broad spectrum, full spectrum and isolate
| Type | Contains | THC | UK notes |
|---|---|---|---|
| Broad spectrum | CBD plus other hemp cannabinoids and terpenes | THC removed | The most popular choice in the UK. All Evopure and Evolabs CBD is broad spectrum |
| Full spectrum | Everything in the hemp extract | Contains THC | THC is controlled, so full spectrum products are a legal grey area here |
| Isolate | Pure CBD only | None | Tasteless; lacks the other hemp compounds |
See full spectrum vs broad spectrum, CBD isolate and the entourage effect.
Ways to take CBD
| Format | How to use | Good for |
|---|---|---|
| Oil | Drops under the tongue, held for about a minute, then swallowed | Adjusting your amount drop by drop. The most popular way to start |
| Capsules | Swallow with water and food | A fixed, tasteless dose. Easy on the go |
| Balm | Massage into skin | A massage routine for shoulders, back, knees or feet |
| Gummies and drinks | Eat or drink | Taste and convenience; check sugar and the mg per serving |
| Vapes | Only purpose-made CBD e-liquids | Never put CBD oil in a vape. See can you vape CBD oil? |
Whatever you choose, take oil or capsules with food. A review estimated only about 6% of swallowed CBD reaches the bloodstream on an empty stomach, and a trial found a high-fat meal raised absorption about 3.8 times. See how to take CBD oil, CBD oil vs capsules and how to use CBD balm.
How much CBD should I take?
The FSA advises healthy adults to take no more than 10mg of CBD a day, about 4 to 5 drops of a 5% oil. The FSA’s 10mg a day figure for CBD 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.
How many drops is 10mg?
Approximate, based on about 20 drops per ml. Droppers vary, so check the label.
| Oil | Strength | CBD per drop | Drops for about 10mg |
|---|---|---|---|
| Evopure 10ml oils (Broad Spectrum, Flow, Sleep, Relief) | 500mg (5%) | About 2.5mg | 4 |
| 1000mg (10%) | About 5mg | 2 | |
| 2000mg (20%, Broad Spectrum only) | About 10mg | 1 | |
| Evolabs 30ml oils (Natural, Orange, Mint, Cherry) | 500mg | About 0.8mg | 12 |
| 1000mg | About 1.7mg | 6 | |
| 2000mg | About 3.3mg | 3 |
Start with a small amount once a day, keep it the same for at least a week, and only increase slowly. See our full CBD dosage guide and CBD oil strengths explained.
When to take CBD and how long it takes
- Morning or evening: whichever fits your routine. Many people take a daytime oil with breakfast and an evening oil after dinner. See morning or night?
- How fast: oil under the tongue often starts within 15 to 45 minutes; capsules take longer because they’re digested first.
- Give it time: use it consistently for 2 to 4 weeks before deciding.
- How long it stays: see how long CBD stays in your system.
Side effects, interactions and who should avoid it
Possible side effects
In studies, CBD is generally well tolerated. The most common side effects are tiredness, diarrhoea and changes in appetite or weight, mostly at doses far higher than in supplements. See CBD side effects.
Medicines
CBD is processed by the same liver enzymes as many medicines, so it can change how some of them work, including blood thinners, some epilepsy medicines and others with a grapefruit warning. Always check with your GP or pharmacist first if you take any medication.
Who should avoid CBD
- Pregnant or breastfeeding women. We don’t recommend our products during pregnancy or breastfeeding.
- Under-18s. Our CBD products are for adults only.
- Anyone with liver problems, unless their doctor agrees.
- Anyone who must pass drug tests with zero tolerance should be cautious with any CBD product.
How to choose a good CBD product
| Check | What good looks like |
|---|---|
| FSA public list | The product is linked to a novel food application on the FSA’s list |
| Lab report | A third-party certificate showing CBD content matches the label and no detectable THC |
| Clear strength | Total mg and mg per serving on the label |
| Spectrum | Broad spectrum or isolate |
| Honest wording | No claims to treat or cure anything. Legal CBD supplements can’t make medical claims |
| UK company | A UK address and real customer service |
See how to choose the best CBD oil in the UK, best CBD capsules UK, how to avoid CBD scams and why CBD costs what it does.
Our range
All our CBD is broad spectrum, vegan, made in the UK and third-party lab tested, and you can view results on our lab testing page. Our Broad Spectrum CBD Oil is the simple everyday choice. Flow adds ashwagandha and maca for daytime routines, Sleep adds passion flower for evenings, and our Broad Spectrum CBD Capsules give a tasteless, fixed dose. For flavoured oils, try the Evolabs range.
Common CBD myths
| Myth | Fact |
|---|---|
| “CBD is the same as cannabis” | CBD comes from hemp and doesn’t cause a high. Broad spectrum CBD has the THC removed |
| “Hemp seed oil is CBD oil” | Hemp seed oil contains little or no CBD. Check the mg of CBD on the label |
| “More is always better” | Start low and increase slowly. Many people find a modest amount suits them |
| “It works instantly” | Some people notice something within an hour, but most should judge it over 2 to 4 weeks |
| “It’s all the same” | Quality varies a lot. Check for a lab report and the FSA public list |
| “You can’t take it with anything” | Most people can, but check with a pharmacist if you take medicines |
Getting started: your first 30 days
| When | What to do |
|---|---|
| Week 1 | Take a small amount once a day with food, at the same time. Try it first at home |
| Week 2 | Keep the same amount. Note how you sleep and feel in a simple diary |
| Week 3 | If you want to, increase slightly. Stay within the amount you’re comfortable with |
| Week 4 | Review your diary. Decide whether to continue, adjust the timing, or try a different format |
Store your oil somewhere cool and dark. See how to store CBD oil and what CBD oil tastes like.
What does the research say?
A purified CBD medicine, Epidyolex, is licensed in the UK for some rare forms of childhood epilepsy, prescribed by specialists at doses far higher than in supplements. For everyday uses, people commonly try CBD as part of their routine for sleep, stress and post-exercise recovery, but good-quality human trials at supplement doses are still limited. CBD food supplements can’t make health claims, and we don’t. See CBD benefits: what the research actually shows, CBD and sleep, CBD and anxiety and CBD and pain.
FAQs
What is CBD?
CBD (cannabidiol) is a natural compound from the hemp plant. It doesn’t get you high and is sold in the UK as a food supplement, mainly as oils, capsules and balms.
Will CBD get me high?
No. The high from cannabis comes from THC. Broad spectrum CBD products have the THC removed.
Is CBD legal in the UK?
Yes, if it’s linked to a novel food application on the FSA’s public list and contains no controlled THC.
How much CBD should a beginner take?
Start low, once a day, with food. The FSA advises healthy adults to take no more than 10mg a day, about 4 drops of a 5% oil.
What is the best type of CBD for beginners?
A broad spectrum oil or capsules from a UK company with a lab report. Oil lets you adjust your amount; capsules give a fixed dose.
How long does CBD take to work?
Oil under the tongue often starts within 15 to 45 minutes; capsules take longer. Use it consistently for 2 to 4 weeks before judging.
Can I take CBD with medication?
Check with your GP or pharmacist first. CBD can affect how some medicines are processed, including blood thinners and some epilepsy medicines.
Is CBD the same as hemp oil?
No. Hemp seed oil is pressed from seeds and contains little or no CBD. CBD oil is made from extracts of the hemp plant.
Sources
- Food Standards Agency. Cannabidiol (CBD) guidance.
- Food Standards Agency. CBD products linked to novel food applications.
- NHS. Medical cannabis (and cannabis oils).
- Iffland K, Grotenhermen F (2017). An update on safety and side effects of cannabidiol: a review of clinical data and relevant animal studies. Cannabis and Cannabinoid Research.
- Perucca E, Bialer M (2020). Critical aspects affecting cannabidiol oral bioavailability and metabolic elimination, and related clinical implications. CNS Drugs.
- Crockett J et al (2020). A phase 1, randomized, pharmacokinetic trial of the effect of different meal compositions, whole milk, and alcohol on cannabidiol exposure and safety in healthy subjects. Epilepsia.
This guide is general information, not medical advice. Evopure makes the CBD products mentioned. Our CBD products are on the FSA’s public list, linked to validated novel food applications.
