10 Best CBD Oils of 2022: Reviews & Buyer’s Guide

By | last updated May 6, 2022

Medically reviewed by
Abraham Benavides, MD

Evidence Based 17

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Many CBD oils contain less CBD than advertised while others might carry pesticides and other contaminants. That’s why finding an affordable, high-quality CBD product isn’t easy.

To help you make an informed choice, we compared dozens of leading brands and more than 60 CBD oils. We judged these products based on third-party lab test results, hemp quality, potency, formula, customer reviews, price, and other criteria.

Here’s our review of the 10 best CBD oils you can currently buy, broken down by convenient categories.

Top 10 Best CBD Oils of 2022

  1. Best Overall & Value: Lazarus Naturals High Potency Tincture | full review
  2. Strongest: CBDistillery Full-Spectrum CBD Oil | full review
  3. Best Full-Spectrum: Koi Complete Full Spectrum Tincture | full review
  4. Best THC-Free: Koi Hemp Extract CBD Oil | full review
  5. Best Reputation: Nuleaf Naturals CBD Oil | full review
  6. Best for Pain: Receptra Naturals Relief Tincture | full review
  7. Best for Sleep: CBDfx CBD + CBN Sleep Tincture | full review
  8. Best Organic: Upstate Elevator Supply Co. Tincture | full review
  9. Best Flavors: Fab CBD Full-Spectrum CBD Oil | full review
  10. Best for Pets: Lazarus Naturals CBD Pet Tincture | full review

CBD Terminology

  • Terpenes: aromatic plant compounds with a wide variety of beneficial properties (1).
  • Minor cannabinoids: CBN, CBG, and other beneficial cannabinoids found in smaller amounts than CBD. For hemp, THC also counts as a minor cannabinoid.
  • Hemp: non-intoxicating cannabis variety with high CBD and low THC levels (less than 0.3%).
  • Full-spectrum: whole-plant hemp extract containing multiple cannabinoids, terpenes, and flavonoids. This form of CBD is about 4 times more potent than pure CBD (2).
  • Broad-spectrum: whole-plant hemp extract similar to full-spectrum CBD, but with THC removed (may contain trace amounts).
  • CBD isolate: pure CBD with all other hemp compounds removed.

Lazarus Naturals High Potency CBD Tincture (Best Overall & Value)

lazarus naturals full spectrum tincture classic

5/5

CBD Potency50 mg/ml
Volume15-120 ml
Total CBD750-6000 mg
Cost per mg CBD $0.02-0.03
TypeFull-spectrum
Flavors3
Third-Party TestsView report

Pros: 

  • Exceptionally low price
  • Free shipping over $50
  • Multiple flavors and bottle sizes
  • USDA organic certification

Cons:

  • None

Our top pick goes to Lazarus Naturals. Its high-potency full-spectrum CBD tincture is the best and most affordable CBD oil we’ve ever used.

It costs only $0.02–0.03 per mg of CBD, which is much cheaper than average. There’s no other CBD brand out there that offers high-quality, third-party tested CBD oil at this price. There’s also an assistance program and free shipping on orders over $50.

This third-party tested, USDA organic-certified tincture has a high potency of 50 mg/ml. It comes in classic, strawberry lemonade, and chocolate mint flavors.

Lazarus Naturals is an employee-owned brand with complete control over every step of the manufacturing process. It grows most of its USDA organic hemp on a farm in Central Oregon.

CBDistillery Full Spectrum CBD Oil (Strongest)

cbdistillery high potency cbd oil

5/5

CBD Potency167 mg/ml
Volume30 ml
Total CBD5000 mg
Cost per mg CBD$0.05
TypeFull-spectrum
Third-Party TestsView report

Use coupon code CBDTHINKER for 15% off

Pros: 

  • Very high potency
  • U.S. Hemp Authority Certification

Cons:

  • None

Some people need to take more CBD to get the effects they’re looking for. In that case, you need to use a high-potency product like this full-spectrum tincture from CBDistillery.

It carries 167 mg CBD/ml for a total of 5000 mg. In comparison, most other brands go no higher than 66 mg/ml. This affordably-priced CBD oil is made from organic Colorado hemp and goes through complete third-party testing to verify its purity and potency.

CBDistillery is one of the most popular brands out there, providing a great combination of quality, transparency, and price. It’s also certified by the U.S. Hemp Authority, highlighting its commitment to strict hemp manufacturing standards. 

Koi CBD Complete Full Spectrum CBD Tincture (Best Full-Spectrum)

koi cbd true full spectrum tincture

5/5

CBD Potency33-167 mg/ml
Volume30 ml
Total CBD1000-5000 mg
Cost per mg CBD $0.04-0.08
TypeFull-spectrum
Flavors3
Third-Party TestsView report

Use coupon code CBDTHINKER for 15% off

Pros: 

  • Rich in minor cannabinoids and terpenes
  • Multiple flavors and strengths
  • Great price

Cons:

  • None

If you’re looking for the most effective CBD oil possible, we recommend going with Koi CBD.

What makes its True Full Spectrum CBD oils different is the high amount of minor cannabinoids (about 14%) and terpenes. Most standard full-spectrum tinctures contain 5-10% minor cannabinoids.

This CBD oil comes in medium-to-high potencies of 33-167 mg/ml with 1000-5000 mg CBD total. You can choose from natural, key lime, and sweet apple flavors. Each version is also sweetened with stevia and comes with third-party tests verifying the high levels of terpenes and minor cannabinoids.

At 4 to 8 cents per mg of CBD, this full-spectrum tincture costs less than average. Koi also offers free shipping on orders over $49 and has an assistance program.

Koi CBD is a popular brand offering a wide variety of third-party tested CBD and other hemp cannabinoid products made from organic Oregon & Colorado hemp.

Koi Hemp Extract CBD Oil (Best THC-Free)

koi cbd oil

5/5

CBD Potency8-67 mg/ml
Volume30-60 ml
Total CBD250-3000 mg
Cost per mg CBD $0.06-0.12
TypeBroad-spectrum
Flavors6
Third-Party TestsView report

Use coupon code CBDTHINKER for 15% off

Pros: 

  • Rich in minor cannabinoids and terpenes
  • Many flavors and strengths

Cons:

  • None

Some people prefer THC-free* products due to drug tests, extreme sensitivity to THC, or other reasons. Again, our top pick goes to Koi CBD because of its impressive broad-spectrum tinctures.

Most broad-spectrum CBD oils contain about 3-9% minor cannabinoids, whereas these ones have about 11-14%. That’s the highest amount of minor cannabinoids we’ve seen from any broad-spectrum CBD oil, which is a big deal because they work in synergy with CBD.

It’s available in six strengths ranging from low (8 mg/ml) to high (67 mg/ml) and six flavors: natural, peppermint, spearmint, strawberry, orange, and lemon-lime. You can also choose from 30 ml or 60 ml bottles.

*Although highly unlikely, it’s possible to test positive on a drug test when using a THC-free product repeatedly due to trace amounts of THC

NuLeaf Naturals Full-Spectrum CBD Oil (Best Reputation)

5/5

CBD Potency60 mg/ml
Volume5-100 ml
Total CBD300-6000 mg
Cost per mg CBD$0.07-0.10
TypeFull-spectrum
Third-Party TestsView report

Use coupon code CBDTHINKER for 20% off

Pros: 

  • Over 20,000 satisfied customer reviews
  • Free shipping

Cons:

  • No flavored options

If you’re looking for high-quality CBD oil from a reputable brand, Colorado’s NuLeaf Naturals is a great choice. Founded in 2014, it’s one of the oldest and most trusted CBD brands.

Its CBD oil has over 20,000 satisfied customer reviews with an average rating of 4.9/5 stars — the best feedback we’ve seen from any CBD oil. This high-potency (60mg/ml) tincture comes in five bottle sizes (5-100 ml). It costs $0.07–0.10 per mg of CBD, which is considered average.

Nuleaf’s products are sourced from organic Colorado hemp and tested by a third-party lab for purity and potency.

Receptra Naturals Serious Relief Tincture (Best for Pain)

receptra-naturals-relief-cbd-oil

5/5

CBD Potency33-66 mg/ml
Volume15-60 ml
Total CBD500-4000 mg
Cost per mg CBD$0.05-0.07
TypeFull-spectrum
Third-Party TestsView report

Use coupon code RECEPTRACBD10 for 10% off

Pros: 

  • Added anti-inflammatory turmeric
  • Free shipping

Cons:

  • Lacks higher potencies

The serious relief tincture from Receptra Naturals is our top pick for pain and inflammation relief. What makes it so effective is the addition of turmeric, a popular anti-inflammatory herbal ingredient that may help with arthritis and other inflammatory issues (3,4).

Receptra’s full-spectrum CBD oil has a mint berry flavor and two potencies: 33 mg/ml and 66 mg/ml. You can start with the 33 mg version; if it’s too weak you may need the stronger one. This affordably priced CBD oil is comprehensively tested for potency and contaminants.

Founded in 2015, Receptra Naturals is another vertically integrated, top-tier brand out of Colorado. It grows its organic hemp on a family-owned farm.

CBDfx CBD + CBN Sleep Tincture (Best for Sleep)

cbdfx sleep tincture

5/5

CBD/CBN Potency38 mg/ml
Volume30-120 ml
Total CBD+CBN1150-4600 mg
Cost per mg$0.04-0.06
TypeBroad-spectrum
Third-Party TestsView report

Use coupon code FXSAVINGS15 for 15% off

Pros: 

  • Sleep formula with melatonin and CBN
  • Free shipping

Cons:

  • Not full-spectrum

If you’re taking CBD oil for sleep, we recommend the CBD+CBN sleep tincture from CBDfx. While not a full-spectrum product, this CBD oil is formulated specifically for sleep. 

It contains pure CBD and cannabinol (CBN), a minor cannabinoid that may enhance the sedative effects of other cannabinoids (5). There’s also a blend of relaxing terpenes and melatonin, the most evidence-backed sleep aid (6).

The tincture is available in five bottle sizes with 1000-4000 mg CBD and 150-600 mg CBN. It costs $0.04–0.06 per mg of CBD/CBN, which is a relatively low price for this unique CBD oil.

CBDfx is a popular, California-based brand known for innovative products. It uses organic Kentucky hemp and provides comprehensive third-party test results of its products. 

Upstate Elevator Supply Co. Hemp Tincture (Best Organic)

upstate elevator supply co full spectrum tincture

5/5

CBD Potency50 mg/ml
Volume30-60 ml
Total CBD1500–3000 mg
Cost per mg CBD$0.03
TypeFull-spectrum
FlavorsPeppermint, Lemon
Third-Party TestView report

Use coupon code cbdthinker15 for 15% off

Pros: 

  • Proprietary, USDA-organic hemp cultivars
  • Low price

Cons:

  • None

Most reputable CBD brands claim to use organic hemp to make their products. But the best way to ensure you’re getting an organic CBD oil is to look for brands certified by the USDA. One such brand is Upstate Elevator Supply Co.

The company grows its own cultivars of high-quality organic hemp suited specifically for Vermont, which is quite rare in the CBD industry.

Its USDA-certified organic full-spectrum CBD oil is flavored with peppermint or lemon and comes in 30-60 ml bottles with 1500-3000 mg of CBD. It’s comprehensively tested by a third-party lab and costs only $0.03 per mg of CBD, which is very cheap.

Founded in 2017 in Vermont, Upstate Elevator Supply Co. is a reputable, high-quality CBD brand.

Fab CBD Full-Spectrum CBD Oil (Best Flavors)

fab-cbd-oil

5/5

CBD Potency10-80 mg/ml
Volume30 ml
Total CBD300-2400 mg
Cost per mg CBD$0.05-0.13
TypeFull-spectrum
Flavors5
Third-Party TestsView report

Pros: 

  • Five flavor options
  • Four strengths

Cons:

  • None

If you dislike the hemp taste of full-spectrum CBD oil, we recommend Florida’s Fab CBD. Its CBD tinctures come in five flavors: natural, citrus, mint, vanilla, and berry.

They’re also available in five strengths ranging from 300 to 2400 mg. With a cost of $0.05-0.13 per mg of CBD, these tinctures have low-to-average prices.

Fab CBD’s products are sourced from organic Colorado hemp and comprehensively tested by a third-party lab to verify their purity and potency.

Lazarus Naturals CBD Pet Tincture (Best Pet CBD Oil)

lazarus naturals pet cbd oil

5/5

CBD Potency20 mg/ml
Volume30-120 ml
Total CBD600-2400 mg
Cost per mg CBD $0.03
TypeFull-spectrum
Flavors2
Third-Party TestsView report

Pros: 

  • Exceptionally low price
  • USDA organic certification

Cons:

  • Only one potency

If you’re looking for CBD oil for your dog or cat, we recommend Lazarus Naturals. Its full-spectrum pet tincture has an incredibly low price of $0.03 per mg of CBD without sacrificing quality. In comparison, most pet CBD oils cost over $0.10 per mg.

With a potency of 20 mg/ml, it’s great for cats and dogs alike. You can choose the USDA-certified organic classic version or the salmon one, which is better for joint health. The CBD oil comes in 30-120 ml bottles with a total of 600-2400 mg CBD.

Lazarus Naturals is a popular employee-owned brand known for affordable, high-quality products. Unlike most CBD companies, it’s vertically integrated, controlling every step of the manufacturing process.

How We Choose CBD Oils

Finding high-quality CBD oil and other CBD products is quite different from other supplements. You have to know what to look for because making an effective CBD oil takes scientific expertise, care, and experience. 

Here are the factors we consider:

  • Third-party testing (to verify the CBD content and lack of contaminants)
  • Type of CBD (to get the best effects)
  • Product potency (to get the best effects)
  • Formula (for specific benefits)
  • Hemp quality (to get a high-quality product)
  • Company reputation (to verify the company can be trusted)
  • Price (to get a good deal)

Read on for a full explanation of how we use these criteria to find the best CBD oils on the market. You can also use these tips to choose high-quality CBD products on your own.

Third-Party Testing

Third-party tests are necessary to confirm the safety and potency of CBD oil. They’re the best way to protect yourself from low-quality products that contain little CBD, too much THC, or carry contaminants. 

Performed by an independent lab, these tests check the levels of CBD, THC, and other cannabinoids in CBD oil products. They can also check for pesticides, heavy metals, mold, and other contaminants. 

Pesticide and heavy metals tests are important for CBD oil because it’s made from hemp, a plant that can absorb heavy metals and other contaminants from the soil (7). 

All reputable CBD brands send their products for third-party testing and posting the test results (called certificates of analysis, CoAs) online. If these test results are not available, that’s a major red flag.

We check the test results for all the products we review to make sure they contain advertised levels of CBD, the correct type of CBD, and zero contaminants. For full-spectrum products, we also check the concentrations of minor cannabinoids (and terpenes, if available).

Type of CBD

As we mentioned earlier, there are three types of CBD:

  • CBD isolate: pure CBD without anything else.
  • Full-spectrum CBD: a whole-plant hemp extract containing all of the plant’s cannabinoids, terpenes, flavonoids, and other active compounds. This includes a small amount of THC (0.3% or less).
  • Broad-spectrum CBD: Same as full-spectrum, but with THC removed.

Research suggests that whole-plant cannabis preparations, such as full-spectrum CBD extract, are more effective than isolated CBD. 

This isn’t surprising since cannabis contains nearly 150 different cannabinoids and 150 terpenes that contribute to its health effects (8,9).

For example, one research paper looking at the use of CBD for epilepsy found that full-spectrum CBD extracts were up to 4 times more potent and less likely to cause side effects than pure CBD (2). 

This is a great example of the  “entourage effect” — the fact that cannabinoids, terpenes, flavonoids, and other active hemp compounds work in synergy (1).

That’s why we recommend using full-spectrum CBD products whenever possible. 

Meanwhile, if you need to avoid THC, you should choose a broad-spectrum CBD oil, since it will maintain the same entourage of beneficial compounds, but without THC.

Potency

Potency or strength refers to the amount of CBD in one millimeter (ml) of oil. The higher the number, the more CBD you’re getting per drop. Generally speaking, CBD oils have three potency levels:

  • Low: 10-20 mg/ml
  • Medium: 20-40 mg/ml
  • High: 40+ mg/ml

You’ll notice that all of the oils we recommend here are high-potency. There are three reasons why: 

  1. Some people find that they need to take large doses of CBD to get a noticeable effect. 
  2. Even if you don’t require large doses, potent CBD oil is convenient because you’ll need to take fewer drops. That’s a big advantage because you can’t effectively use more than 1-2 ml of CBD oil at a time since you have to hold it under your tongue.
  3. You get more CBD in total, so you end up paying less per mg and get a longer-lasting supply. 

Formula

When recommending CBD oil for a specific benefit, we also look at additional ingredients. For example, if you’re taking CBD oil for sleep then formulas with additional CBN could be more effective than regular tinctures.

Similarly, if you’re taking CBD oil for pain, additional anti-inflammatory ingredients like turmeric can add to the benefits of CBD.

Hemp Quality

Since CBD is extracted from hemp, how and where this hemp is grown is also important. 

We only recommend CBD oils made from organic hemp grown in states like Colorado, Kentucky, Oregon, or European countries. 

We also give preference to vertically integrated companies that grow and extract their own hemp because that gives them more control over product quality and consistency. In contrast, most CBD brands buy hemp or finished extracts from other producers.

It’s also good if you can find brands with USDA organic certification or U.S. Hemp Authority certification.

Company Reputation

The brands we recommend have overwhelmingly positive customer reviews that help verify that you’re getting effective CBD oil and good customer service.

They’re also transparent about their hemp source, third-party testing results, the people behind the company, and provide other helpful details to build trust with customers.

Price

CBD oil is not cheap, so we also consider the price. We make it easy to tell if you’re paying a low, average, or high price by comparing the price per milligram (mg) of CBD for different products.

Generally speaking, there are three tiers of CBD oil prices:

  1. Low: $0.07 or less per mg
  2. Average: $0.08-$0.13 per mg
  3. High: $0.14+ per mg

We also consider free shipping deals, assistance programs, and other discounts.

Did you know? When it comes to CBD oil, a high price doesn’t necessarily mean a better product. There are plenty of affordable brands that beat out pricier companies in quality. 

CBD Oil Dosage

Everyone’s ideal CBD oil dosage is different. It depends on your body weight, genetics, the benefits you’re looking for, and the kind of product you’re taking. 

As such, it’s best to follow the “start low and go slow” approach suggested by health experts (10).

Start with a small dose of CBD (10-15 mg) and pay attention to the effects over the next two hours. If you don’t notice anything, gradually increase the dosage over time until you start to feel the desired effects.

For example, you might take 10 mg of CBD. If it doesn’t seem to do anything after two hours, you can try 15 mg. Repeat this until you find the dose that works for you.

As a general rule of thumb, most people take 20-50 mg doses of full-spectrum CBD. This is generally dosed once or twice per day, depending on your routine and daily needs.

How to Use CBD Oil

Place the desired number of drops under your tongue. Hold for at least a minute but ideally 3 minutes or more and then swallow. The longer you hold the oil, the more CBD can be absorbed into your blood vessels. 

CBD oil takes about 15-40 minutes to start working (11) and its effects typically last for about 4-6 hours. 

You can either take CBD oil regularly or as needed. For example, taking CBD oil every day in the morning and evening would work well for someone looking to improve a chronic condition. 

Meanwhile, someone who deals with occasional sleeplessness or an anxiety attack might only take CBD when they need it. 

Safety and Side Effects

According to research, CBD is a safe compound with few and minor side effects. Chronic use and high doses of up to 1500 mg per day have been repeatedly shown to be well tolerated by humans (12).

Even the World Health Organization (WHO) concluded in its 2018 report that CBD is “generally well tolerated with a good safety profile.” (13)

The most common side effects of CBD include:

  • Feeling tired or drowsy
  • Dry mouth
  • Diarrhea
  • Low blood pressure 
  • Lightheadedness

CBD can also interact with enzymes that metabolize the majority of prescription medicines. This means it can reduce or strengthen their effects (14).

The likelihood of these side effects increases with higher doses of CBD. Most studies have evaluated very large doses of CBD (>400mg), which may not be necessary for your overall wellness needs.  That means these side effects are unlikely to happen for most regular CBD users.

The long-term effects of cannabinoids including CBD have yet to be studied, and special populations should exercise caution. Always talk to a physician before starting a CBD regimen for any reason to avoid potential complications.

CBD Oil FAQs

What is CBD Oil?

CBD oil is a supplement that contains hemp-derived CBD extract. This CBD is dissolved in a carrier oil like coconut MCT oil to improve its absorption.

Can CBD Get You High?

No, CBD is non-psychotropic which means it cannot get you high. In fact, it can counteract the intoxicating effects of THC (15).

What’s the Difference Between Hemp Oil and CBD Oil?

Hemp oil is made from the seeds of hemp, which don’t contain CBD or any other cannabinoid. Meanwhile, CBD oil is made from the flowers and other above-ground parts of the plant, which are rich in cannabinoids and terpenes. But hemp seed oil can contain trace amounts of cannabinoids due to contamination from other parts of the hemp plant (16).

Is CBD Legal?

Yes, the 2018 Farm Bill made hemp and hemp-derived CBD products federally legal in the U.S. However, a few states have more restrictive laws about CBD so be sure to check the specific state or jurisdiction you’re interested in. 

CBD is also legal in Canada, the UK, and most European countries, although it’s best to check your particular country and local laws first.

What are the Benefits of CBD Oil?

Companies aren’t allowed to say that CBD oil can help with any medical condition or symptom because of FDA regulations. Having said that, animal and human studies have shown that CBD has a wide range of beneficial properties, including analgesic (pain-relieving), anti-inflammatory, anxiolytic (anxiety-relieving), neuroprotective (protects brain cells), antidepressant, antiepileptic, and many other effects (17). 

Does CBD Show Up on Drug Tests?

Pure CBD will not show up on a marijuana drug test because it looks for the presence of THC. Meanwhile, full-spectrum CBD products might trigger a positive test because they contain small amounts of THC.

However, it’s still theoretically possible that repeated use of any cannabinoid-containing product may cause a positive result from small amounts of bioaccumulation.

For a closer look at these and other questions and tips, check our comprehensive, science-based CBD guide

References

  1. Russo, Ethan B. “Taming THC: potential cannabis synergy and phytocannabinoid‐terpenoid entourage effects.” British journal of pharmacology 163.7 (2011): 1344-1364.
  2. Pamplona, Fabricio A., Lorenzo Rolim da Silva, and Ana Carolina Coan. “Potential clinical benefits of CBD-rich cannabis extracts over purified CBD in treatment-resistant epilepsy: observational data meta-analysis.” Frontiers in neurology 9 (2018): 759.
  3. Daily, James W., Mini Yang, and Sunmin Park. “Efficacy of turmeric extracts and curcumin for alleviating the symptoms of joint arthritis: a systematic review and meta-analysis of randomized clinical trials.” Journal of medicinal food 19.8 (2016): 717-729.
  4. Hewlings, Susan J., and Douglas S. Kalman. “Curcumin: a review of its effects on human health.” Foods 6.10 (2017): 92.
  5. Karniol, Isac G., et al. “Effects of Δ9-tetrahydrocannabinol and cannabinol in man.” Pharmacology 13.6 (1975): 502-512.
  6. Auld, Fiona, et al. “Evidence for the efficacy of melatonin in the treatment of primary adult sleep disorders.” Sleep medicine reviews 34 (2017): 10-22.
  7. Montoya, Zackary, et al. “Cannabis Contaminants Limit Pharmacological Use of Cannabidiol.” Frontiers in Pharmacology 11 (2020): 1439.
  8. Citti, Cinzia, et al. “A novel phytocannabinoid isolated from Cannabis sativa L. with an in vivo cannabimimetic activity higher than Δ 9-tetrahydrocannabinol: Δ 9-Tetrahydrocannabiphorol.” Scientific reports 9.1 (2019): 1-13.
  9. Booth, Judith K., and Jörg Bohlmann. “Terpenes in Cannabis sativa–From plant genome to humans.” Plant Science 284 (2019): 67-72.
  10. Lucas, Catherine J., Peter Galettis, and Jennifer Schneider. “The pharmacokinetics and the pharmacodynamics of cannabinoids.” British journal of clinical pharmacology 84.11 (2018): 2477-2482.
  11. Russo, Ethan B. “Cannabinoids in the management of difficult to treat pain.” Therapeutics and clinical risk management 4.1 (2008): 245.
  12. Iffland, Kerstin, and Franjo Grotenhermen. “An update on safety and side effects of cannabidiol: a review of clinical data and relevant animal studies.” Cannabis and cannabinoid research 2.1 (2017): 139-154.
  13. WHO. Cannabidiol (CBD) Critical Review Report. June 7, 2018.
  14. Brown, Joshua D., and Almut G. Winterstein. “Potential adverse drug events and drug–drug interactions with medical and consumer cannabidiol (CBD) use.” Journal of clinical medicine 8.7 (2019): 989.
  15. Niesink, Raymond JM, and Margriet W. van Laar. “Does cannabidiol protect against adverse psychological effects of THC?.” Frontiers in psychiatry 4 (2013): 130.
  16. Citti, Cinzia, et al. “Cannabinoid profiling of hemp seed oil by liquid chromatography coupled to high-resolution mass spectrometry.” Frontiers in plant science 10 (2019): 120.
  17. VanDolah, Harrison J., Brent A. Bauer, and Karen F. Mauck. “Clinicians’ guide to cannabidiol and hemp oils.” Mayo Clinic Proceedings. Vol. 94. No. 9. Elsevier, 2019.

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