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Complete guide · Cannabis and its derivatives

Cannabidiol (CBD)A cannabis compound that does not cause a high, but is not free of risks

Reviewed by: Dr. Mahmoud El-Sawy Last updated: October 1, 2026 7-minute read
The short answer

Cannabidiol (CBD) is one of the compounds in the cannabis plant, but unlike THC it does not cause a high, and the World Health Organization’s expert committee concluded in 2018 that it shows no potential for abuse or dependence. An approved medication exists, Epidiolex, for rare and severe forms of epilepsy. But the US Food and Drug Administration warns that it can harm the liver and interact with other medications, and that commercial products may contain THC or other undeclared substances.

  • Cannabidiol is not yet a proven treatment for anxiety, insomnia or addiction.
  • Do not use it alongside your medications, especially sedatives and epilepsy drugs, without consulting your doctor.
  • An unlicensed product may show a positive result on a cannabis test if it contains THC.

What is cannabidiol?

“It’s a natural oil for anxiety and sleep, not hashish.” This is how cannabidiol is marketed online. Some of it is true and some is misleading, and the difference may matter for your health and for your test result.

The cannabis plant contains hundreds of compounds, the two best known being THC, which is responsible for the high in hashish and bango, and cannabidiol, known as CBD for short. The US Food and Drug Administration explains that THC is what produces the “high” associated with marijuana, while cannabidiol is a different compound, now sold in oils, drops, capsules, candy and cosmetics, many of them without pharmaceutical oversight.

That is why cannabidiol sits within the cannabis family on our site: not because it is an addictive substance, but because the most common questions about it are: Is it a drug? Does it show up in a test? And how is it related to hashish?

What is the difference between cannabidiol and THC?

Two compounds from the same plant with different effects
Point of comparisonCannabidiol (CBD)THC
HighDoes not cause a highResponsible for the high
Potential for abuseShows no potential for abuse or dependence, according to the World Health OrganizationCauses dependence and addiction in some users
Medical useEpidiolex for rare forms of epilepsyPrescription-only medications in some countries
Standard cannabis testDoes not target it, and pure CBD does not convert into THCDetects its metabolites
Infographic, cannabidiol versus THC: the high, potential for abuse, medical use, standard cannabis test
A comparison of cannabidiol and THC in terms of the high, addiction, medical use and testing

How does cannabidiol affect the brain and body?

How cannabidiol works is still not precisely known. The official prescribing information for Epidiolex states that the mechanism by which it prevents seizures in humans is unknown, and that it does not appear to work through cannabinoid receptors the way THC does. This explains why it does not cause a feeling of a high or altered perception.

But the absence of a high does not mean the absence of an effect. Cannabidiol is metabolized in the liver by enzymes that act on many other medications, so its most important harms come from the liver, from drug interactions and from drowsiness, not from addiction.

What are the approved medical uses of cannabidiol?

The only use approved so far by the US Food and Drug Administration is the medication Epidiolex, a pure cannabidiol oral solution approved in 2018 to treat seizures associated with Lennox-Gastaut syndrome and Dravet syndrome. Its current label also includes tuberous sclerosis complex, for people aged one year and older. It is given by prescription with follow-up, as its label calls for liver function tests before starting and during treatment.

Is cannabidiol a drug of abuse or addictive?

Pharmacologically, no. The World Health Organization’s Expert Committee on Drug Dependence reviewed it in 2018 and found that it has no intoxicating psychoactive properties and no potential for abuse or dependence, and recommended that pure preparations of it not be placed under international control.

This is supported by studies in the Epidiolex label: in a study of recreational drug users, ratings of “drug liking” for cannabidiol fell within the placebo range, unlike synthetic THC and alprazolam. In another study, adults took cannabidiol for 28 days and then stopped, and showed no withdrawal symptoms during 6 weeks of follow-up. But all of this concerns pure cannabidiol, not any product sold under its name.

Why is the problem the product, not the compound?

A study published in JAMA in 2017 analyzed about 84 cannabidiol products sold online and found that only 26 of them, about 31%, were accurately labeled, and that THC appeared in 18 products. In the US state of Utah, a 2018 report from the Centers for Disease Control and Prevention documented dozens of poisoning cases linked to products sold as CBD oil, which on analysis were found to contain synthetic cannabinoids and no cannabidiol at all.

The legal status of cannabidiol in Egypt

Internationally, the World Health Organization recommended that pure cannabidiol not be controlled, but regulation of its products varies widely from country to country. We are not aware of a published Egyptian text that specifically addresses commercial cannabidiol products, while cannabis and THC fall under Narcotics Law No. 182 of 1960 and its schedules. Because a product may contain THC without it being stated on the package, do not rely on the word “legal” written on it.

This is general educational information and not legal advice.

Cannabidiol in numbers

Only 31%Of 84 cannabidiol products sold online were accurately labeled in the 2017 JAMA study
13% vs. 1%Rise in the ALT enzyme to more than 3 times the normal limit with Epidiolex versus placebo in epilepsy trials
52 casesOf poisoning in Utah between 2017 and 2018 from products sold as CBD oil that turned out to be synthetic cannabinoids

Sources: the Bonn-Miller et al. study in JAMA 2017, the official prescribing information for Epidiolex, and the US Centers for Disease Control and Prevention MMWR report, 2018.

Cannabidiol harms and testing in brief

Harms: the most notable are drowsiness, digestive upset, raised liver enzymes and interaction with medications such as epilepsy drugs and sedatives, along with the risk of contaminated products. Details are in the guide to cannabidiol harms.

Testing: cannabis tests look for THC metabolites, not cannabidiol, and pure CBD does not convert into THC in the body, but products containing small amounts of THC may give a positive result. Read about how long cannabidiol stays in the body and testing.

Cannabidiol guide: everything you need to know

We have gathered everything about cannabidiol into 2 pages, each answering one question in detail. Choose what you are looking for:

When do you need medical advice?

  • Before using any cannabidiol product if you have liver disease or take regular medications, especially epilepsy drugs or sedatives.
  • If you are pregnant or breastfeeding, because its safety during these periods has not been established.
  • If “CBD oil” is the start of using hashish or THC products, or has become a daily way of silencing undiagnosed anxiety or insomnia.
  • If signs of poisoning appear after a product of unknown origin, call the ambulance (123).

Reliance on these products may be driven by depression or an anxiety disorder that needs real treatment, and outpatient treatment at Eradah offers a confidential assessment for such cases.

Danger signs after using cannabidiol products: call the ambulance (123) immediately

  • Seizures or involuntary tremor after using an oil or vaping liquid of unknown origin
  • Severe confusion, agitation, hallucinations or loss of consciousness
  • Deep drowsiness and difficulty waking, especially with alcohol or sedatives
  • Repeated vomiting that does not stop, with dizziness
  • Swelling of the face or lips, or difficulty breathing or swallowing after use

Call ambulance (123) immediately. If the person is unconscious but breathing, place them on their side so they do not choke on vomit. Stay with them and do not leave them alone. Do not give them food or drink, and tell the paramedics everything they took or used, and the amount and time if you know them.

Call the ambulance 123
Frequently asked questions

Frequently asked questions about cannabidiol

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What is cannabidiol?

A compound from the cannabis plant known as CBD for short. It does not cause a high and is sold in oils, capsules and other products, and an approved medication made from it treats rare forms of epilepsy.

Is cannabidiol a drug of abuse?

Pure cannabidiol does not cause a high and shows no potential for abuse or dependence according to the World Health Organization, but some of its commercial products may contain intoxicating THC.

What is the difference between cannabidiol and THC?

THC causes a high and dependence and is detected by cannabis tests, while cannabidiol does not cause a high and is not targeted by standard tests.

Is CBD oil useful for anxiety and sleep?

The evidence is still limited, and the US Food and Drug Administration has not approved any cannabidiol product for these purposes; the only approved use is for rare forms of epilepsy.

Is cannabidiol addictive?

The pure compound shows no potential for addiction, and no withdrawal symptoms appeared in a study in which people stopped it, but products containing THC may cause dependence.

What is the medication Epidiolex?

A pure cannabidiol oral solution approved by the US Food and Drug Administration in 2018 for seizures in Lennox-Gastaut and Dravet syndromes, and then tuberous sclerosis complex. It is given by prescription with liver function monitoring.

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