CBD Vs. THC: Properties, Benefits, And Side Effects - Healthline

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HealthlineSubscribeCBD vs. THC: What’s the Difference?

Medically reviewed by Eloise Theisen, RN, MSN, AGPCNP-BC — Written by Kimberly Holland — Updated on February 12, 2024

CBD
THC
Chemical structure
Psychoactive components
Legality in the U.S.
Medical benefits
Side effects
Drug testing
FAQ
Takeaway

CBD and THC are both found in cannabis plants, but they interact with your body differently. One main difference is that THC produces a high while CBD does not.

As the legal use of hemp and other cannabis products grows in the United States, consumers are becoming more curious about their options. This includes cannabidiol (CBD) and tetrahydrocannabinol (THC), two natural compounds found in plants of the Cannabis genus.

Both compounds interact with your body’s endocannabinoid system, but they have very different effects.

Read on to learn more about these compounds. While they may have a lot in common, some key differences determine how to use them.

Here is a high level summary of the major differences between CBD and THC:

CBD	THC
is legal	it depends (see below)	it depends (see below)
produces a high	no	yes
interacts with endocannabinoid system	yes	yes
has side effects	yes (see below)	yes (see below)
shows on drug test	possibly	yes
relieves pain	yes	yes
reduces nausea	yes	yes
eases migraine	yes	yes
reduces anxiety	yes	yes
eases depression	yes	no
decreases seizures	yes	no
is anti-inflammatory	yes	yes
helps with insomnia	yes	yes
helps with psychosis	yes	no
increases appetite	no	yes
is used for various other conditions	yes	yes

It’s important to note that cannabinoids will affect everyone differently. While some people may find benefits for some of the conditions listed above, others will not.

Is CBD Legal? Hemp-derived CBD products (with less than 0.3 percent THC) are legal on the federal level, but are still illegal under some state laws. Marijuana-derived CBD products are illegal on the federal level, but are legal under some state laws. Check your state’s laws and those of anywhere you travel. Keep in mind that nonprescription CBD products are not FDA-approved, and may be inaccurately labeled.

What is CBD?

CBD can be extracted from hemp or cannabis. Hemp and cannabis come from the Cannabis sativa plant.

Legal hemp must contain 0.3% THC or less. CBD is sold in gels, gummies, oils, supplements, extracts, and more.

CBD does not produce the “high” sensation associated with cannabis.

What is THC?

THC is the main psychoactive compound in cannabis that produces a “high” sensation. It can be consumed by smoking cannabis. It’s also available in oils, edibles, tinctures, capsules, and more.

CBD vs. THC: Chemical structure

CBD and THC have the same molecular structure: 21 carbon atoms, 30 hydrogen atoms, and 2 oxygen atoms. A slight difference in how the atoms are arranged accounts for the differing effects on your body.

CBD and THC are chemically similar to your body’s endocannabinoids. This allows them to interact with your cannabinoid receptors. The interaction affects the release of neurotransmitters in your brain.

Is CBD as powerful as THC?

Despite their similar chemical structures, CBD and THC do not have the same psychoactive effects. CBD is psychoactive, just not in the same manner as THC. It does not produce the high associated with THC.

THC binds with the cannabinoid 1 (CB1) receptors in the brain, producing a high or a sense of euphoria.

CBD vs. THC: Legality

In the United States, cannabis-related laws are evolving regularly. Technically, CBD is still considered a Schedule I drug under federal law.

Hemp has been removed from the Controlled Substances Act, but the Drug Enforcement Administration (DEA) and Food and Drug Administration (FDA) still classify CBD as a Schedule I drug.

As of April 2023, 38 states, as well as D.C., Puerto Rico, Guam, and the U.S. Virgin Islands, have legalized the use of medical cannabis with high levels of THC.

Another 10 states allow access to limited amounts of low THC cannabis or CBD oil.

The cannabis may need to be recommended by a licensed physician. Certain states also allow licensed physicians and advanced practice registered nurses to recommend cannabis.

In addition, 24 states, as well as D.C., Guam, and the Northern Mariana Islands, have legalized the recreational use of cannabis. In these states, you should be able to buy CBD.

Before you try to buy products with CBD or THC, it’s important to research your state’s laws.

If you possess cannabis-related products in a state where they’re illegal or don’t have a medical prescription in states where the products are legal for medical treatment, you could face legal penalties.

CBD vs. THC: Medical benefits

CBD and THC have many of the same medical benefits. For example, they may help treat similar conditions and provide relief from the same conditions. However, factors like dose, frequency, and product quality may play a role in how you respond.

CBD

In June 2018, the FDA approved Epidiolex, which is the first CBD prescription medication. It’s produced from the cannabis plant and refined into an isolate that is 99% pure CBD.

It’s used to treat rare, difficult-to-control forms of epilepsy. (Epidiolex is not currently approved for any of the other conditions listed below.)

Other than that, commercially available CBD products, such as CBD oil, may be used to help with symptoms of other conditions. Learn more about the potential health benefits of CBD oil.

In addition, CBD may offer some benefits in treating symptoms of depression, anxiety, insomnia, and schizophrenia, though it has yet to be approved by the FDA for these uses.

More research is needed to determine whether CBD can effectively treat these conditions and others.

THC

The FDA has approved two synthetic formulations of THC for treating specific conditions: nabilone and dronabinol.

Nabilone (Cesamet) is FDA approved for treating chemotherapy-induced nausea and vomiting.

Dronabinol (Marinol, Syndros) is FDA approved to treat nausea and vomiting caused by chemotherapy drugs. It is also approved to stimulate appetite in people with AIDS or anorexia.

THC is often used to help with issues like nausea, appetite, pain, and insomnia.

Recent studies are looking at the potential of THC to treat fibromyalgia and other types of chronic pain.

Is THC more effective than CBD for pain?

Unlike THC, CBD binds very weakly, if at all, to CB1 receptors. CBD needs THC to bind to the CB1 receptor and, in turn, can help reduce some of the unwanted psychoactive effects of THC, such as euphoria or sedation.

That said, there’s not a lot of data that compares the effectiveness of CBD and THC in terms of treating pain. In studies where people reported a preference for CBD in treating chronic neuropathic pain, the potency level did not seem to increase people’s perceptions of the therapeutic effect.

We also know from various studies that people who do notice a more immediate improvement in symptoms related to pain after taking cannabis tend to use products that contain more THC than CBD.

This is consistent with available findings showing that a combination of THC and CBD might be most effective for treating pain.

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CBD vs. THC: Side effects

CBD is typically well tolerated, even in large doses. Any side effects of CBD are likely the result of drug-to-drug interactions between CBD and other medications you may be taking. This may include liver damage.

THC can cause both temporary side effects and long-term negative psychiatric effects. These side effects are part of the compound’s psychoactive properties.

Neither compound is fatal.

However, high THC use may be connected to long-term negative psychiatric effects. This may be especially true for adolescents who consume large amounts of THC.

Long-term cannabis use can also cause amotivational syndrome in which people experience symptoms of depression and low motivation.

However, there’s currently no conclusive evidence that using cannabis causes psychiatric disorders like schizophrenia.

CBD vs. THC: Drug testing

Cannabinoids like THC and CBD are stored in the body’s fat. They can show up on drug tests for several days or weeks after you use them.

Not every drug test can detect CBD, but CBD-sensitive tests are available. Most standard drug tests look for chemicals related to THC, so THC or cannabis use might appear on a screening.

Likewise, hemp can produce some THC in addition to CBD, so a test could be positive for THC even if you haven’t used it.

Products that claim to be THC-free may not actually be free of THC, so if you’re getting a drug test, avoid any CBD or THC products.

Learn more about how CBD could show up on a drug test.

Frequently asked questions

Does smoking CBD affect your heart?

Some CBD products like oils, gummies, and gels may have several health benefits, such as treating pain, epilepsy seizures, and anxiety.

Smoking cannabis may pose a risk for people living with cardiovascular conditions like heart disease because it may increase your heart rate, aggravate arrhythmias, decrease oxygen to the heart, and increase blood pressure.

That said, research comparing the acute and chronic use of cannabis suggests there is limited evidence to support the causation between smoking cannabis and cardiovascular conditions.

How does CBD make you feel when smoking it?

According to the FDA, smoking CBD can make you feel drowsy, sleepy, and irritated. It may also cause gastrointestinal symptoms, such as diarrhea or reduced appetite.

Is CBD better than THC for you?

Both CBD and THC have medical benefits, such as pain relief. However, CBD isn’t a psychoactive compound. This means it doesn’t cause the euphoric feelings associated with cannabis. You may prefer to use CBD instead of THC because of the lack of this side effect.

Is it OK to smoke CBD every day?

According to the Centers for Disease Control and Prevention, smoking cannabis may affect your lung health and increase your risk of developing bronchitis. That said, more research is needed on the long-term effects of smoking every day.

Smoking CBD every day is not an effective route to treat a chronic condition. As such, speak with a healthcare professional about different types of treatment. They can help you determine whether the risks of smoking CBD every day outweigh the benefits.

Takeaway

CBD and THC both have medical benefits. They’re also both considered safe, but consider the possible side effects and interactions with other drugs you take. Talk with your doctor or a qualified cannabis or CBD clinician before use if you have any questions.

Want to learn more about CBD? Click here for more product reviews, recipes, and research-based articles about CBD from Healthline.

How we reviewed this article:

SourcesHistoryHealthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.

Chayasirisobhon S. (2020). Mechanisms of action and pharmacokinetics of cannabis.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8803256/
Dabiri AE, et al. (2021). Effects of cannabis on cardiovascular system: The good, the bad, and the many unknowns.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8832198/
FDA regulation of cannabis and cannabis-derived products, including cannabidiol (CBD). (2024).https://www.fda.gov/news-events/public-health-focus/fda-regulation-cannabis-and-cannabis-derived-products-including-cannabidiol-cbd
FDA approves first drug comprised of an active ingredient derived from marijuana to treat rare, severe forms of epilepsy [Press release]. (2020).https://www.fda.gov/news-events/press-announcements/fda-approves-first-drug-comprised-active-ingredient-derived-marijuana-treat-rare-severe-forms
Lung health. (2020).https://www.cdc.gov/marijuana/health-effects/lung-health.html
Meissner H, et al. (2023). Cannabidiol (CBD).https://www.ncbi.nlm.nih.gov/books/NBK556048/
Ng T, et al. (2023). Tetrahydrocannabinol (THC).https://www.ncbi.nlm.nih.gov/books/NBK563174/
Perry D, et al. (2018). Evidence for THC versus CBD in cannabinoids.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6042662/
Sarris J, et al. (2020). Medicinal cannabis for psychiatric disorders: A clinically-focused systematic review.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6966847/
Sholler DJ, et al. (2022). Urinary pharmacokinetic profile of cannabidiol (CBD), Δ9-tetrahydrocannabinol (THC) and their metabolites following oral and vaporized CBD and vaporized CBD-dominant cannabis administration.https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9122505/
State medical cannabis laws. (2023).https://www.ncsl.org/health/state-medical-cannabis-laws
Stith SS, et al. (2019). The association between cannabis product characteristics and symptom relief.https://www.nature.com/articles/s41598-019-39462-1
The federal status of marijuana and the expanding policy gap with states. (2023).https://crsreports.congress.gov/product/pdf/IF/IF12270
What you need to know (and what we’re working to find out) about products containing cannabis or cannabis-derived compounds, including CBD. (2020).https://www.fda.gov/consumers/consumer-updates/what-you-need-know-and-what-were-working-find-out-about-products-containing-cannabis-or-cannabis

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Medically reviewed by Eloise Theisen, RN, MSN, AGPCNP-BC — Written by Kimberly Holland — Updated on February 12, 2024

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