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People taking other medications: When side effects are reported, it’s often by this group. CBD appears to have a similar effect to grapefruit on the liver’s ability to metabolize certain drugs, which can lead to adverse side effects. Generally, if a medication has a grapefruit warning, you should avoid taking CBD. Although, if you are on any medication you should talk to your doctor before starting CBD, to ensure you won’t expect any negative interactions.
The human body also produces cannabinoids, known as endocannabinoids, in a bodily system known as the endocannabinoid system (or ECS). The ECS promotes homeostasis by regulating a wide range of functions, including motor skills, mood, appetite, and sleep. As we age, our ECS produces fewer endocannabinoids; they may also decrease due to physical injury or disease. Replenishing depleted endocannabinoids with phytocannabinoids like CBD can help restore balance to the body.
NuLeaf Naturals markets themselves as “the world’s premier CBD oil company” – I don’t know if I’d quite go to that extent and say that, but I will say that my partner Josh and I have both tried their full-spectrum tinctures, and they do work incredibly well. Also, they main reason they made it on my list here of the best CBD oils online is the fact they offer one of the most potent oral tinctures on the market: a 1,450 mg super highly concentrated oil that wiped my back pain out in less than 20 minutes. To be clear, that’s 45% more potent than PureKana’s strongest oil (1,000 mg). Why don’t I use NuLeaf Naturals all the time then, you might be wondering? Well, I can get away with much smaller doses than that, so there’s no reason to take such a potent dose if I don’t need to. If you’ve been scrounging around the web trying to find a super strong CBD oil, or have otherwise not had great results with other products, I definitely recommend trying some of NuLeaf Naturals’ stuff out. Be advised, though, that it ain’t cheap!
Given CBD’s reputation as a popular, artisanal remedy, one would think that Epidiolex would command a lot of “off label” attention. After all, physicians often prescribe pharmaceuticals off label to treat conditions that were not the actual focus of clinical trials. But the costly price tag for Epidiolex (more than $30,000 annually) precludes off label prescribing as well as affordable access for tens of millions of Americans without health insurance.

Given CBD’s reputation as a popular, artisanal remedy, one would think that Epidiolex would command a lot of “off label” attention. After all, physicians often prescribe pharmaceuticals off label to treat conditions that were not the actual focus of clinical trials. But the costly price tag for Epidiolex (more than $30,000 annually) precludes off label prescribing as well as affordable access for tens of millions of Americans without health insurance.

Success stories like Oliver’s are everywhere, but there’s not a lot of data to back up those results. That’s because CBD comes from cannabis and, like nearly all other parts of the plant, is categorized by the Drug Enforcement Agency (DEA) as a Schedule 1 drug—the most restrictive classification. (Others on that list: heroin, Ecstasy, and peyote.) This classification, which cannabis advocates have tried for years to change, keeps cannabis-derived products, including CBD, from being properly studied in the U.S.


Lisa Hamilton, a jeweler and doula in Brooklyn, NY, knows about the side effects. She recently tried CBD for the shoulder pain that plagued her five years after an accident. Her doctor certified that she was in chronic pain, which under New York State law allowed her to buy from a state dispensary. One Friday, she swallowed two 10-mg capsules, the amount recommended at the dispensary, then took another two on Saturday. “By Sunday, it felt like I’d gotten hit by a truck. Every muscle and joint ached,” Hamilton says. She cut back to one pill a day the following week, but still felt hungover. She stopped after that.
Most products labeled “hemp oil” do not contain any CBD. Those are typically hemp seed oil which is more commonly used for cooking or to make salad dressing. If you want to buy CBD oil, you’ll want to look for products that are labeled “CBD oil” or “hemp extract.” To confirm that a product you’re interested in has CBD in it, you’ll want to look at their third-party lab reports. All reputable companies selling CBD oil products will make third-party lab reports available to you to confirm the presence of CBD.
When it comes to CBD oil, NuLeaf Naturals is practically a veteran of the industry. Founded in 2014, this company has been offering simple, no-nonsense legal CBD for five years. NuLeaf uses specially bred therapeutic hemp plants that contain high levels of CBD and other beneficial cannabinoids like CBC, CBG, and CBN while maintaining low levels of the psychoactive cannabinoid THC.
This is why Amanda Oliver, 31, a career consultant in Charleston, SC, pops a CBD gummy bear each night before bed. “I used to lie there tossing and turning as my mind raced from work projects to whether I had set the home alarm,” Oliver says. One piece of candy with 15 milligrams (mg) of CBD is enough to shut off her brain and facilitate sleep. She also swears by the CBD oil she takes at the height of her period, which she says quells her debilitating cramps.
Transparency: cbdMD seems to be going through a transition with their third-party testing practices. Until recently, they only released a lab report for the CBD concentrate they use for all their products, but would not show potency testing for individual products. That seems to be changing. Currently, the only lab report on the website is for their concentrate (and it’s over a year old). But if you contact customer service, they’ll send you a lab report for any product. 
NuLeaf Naturals CBD oil tinctures are all full spectrum; it is 100% organic and never made with herbicides, pesticides, or chemical fertilizers. The brand offers a full spectrum pet CBD oil tincture, as well. NuLeaf Naturals offers free shipping to all 50 states; the brand’s products are also sold in more than 1,000 retail locations across the country.
CBD oil alleviates physical pain and anxiety – both of which can have a negative impact on sleep. Additionally, CBD oil can actually prolong sleep for some, leading to more rest from night to night. Most medical experts agree that marijuana is not particularly beneficial for individuals with medical conditions and/or mental health disorders, as the THC can increase their symptoms; this makes CBD oil a good alternative option for people with the following sleep disorders and medical conditions.
Los Angeles-based PureKana stresses that it extracts the CBD oil for its products from hemp plants that have been cultivated without the use of herbicides, pesticides or other agro-industrial chemicals that may impact upon crops. What’s more, the company states, no solvents go into the extraction process other than carbon dioxide. And to further put potential customers’ minds at rest, PureKana presents the results of third-party testing of its CBD oil tincture on its website – a welcome nod to transparency. That tincture can be found in the company’s own blend of CBD oil drops – the three varieties of which have elicited highly complimentary reviews from users – as well as its capsules and cooling topical ointment. Meanwhile, for anyone with a sweet tooth, PureKana’s CBD isolate-containing gummy bears may just do the trick.
Hemp-derived CBD products were made federally legal in December 2018 with the signing of the 2018 Farm Bill. However, several states still have laws in place that restrict the sale and possession of these products. Most companies selling CBD oil are shipping to all 50 states. You should consult your local laws or an attorney in your area if you have concerns about legalities.
But even though it's infiltrating pretty much every corner of the wellness world (hi, vegan CBD brownies!) many people still find CBD a little confusing—especially when it comes to figuring out the right way to use it and how to make sure the stuff you're buying is, you know, actually legit. Below, we asked experts to answer the most pressing questions about CBD.

Another point worth clarifying is the difference between hemp seed oil (or hemp oil) and CBD oil. There’s confusion on this point for the very good reason that both CBD oil and hemp seed oil are extracted from the industrial hemp plant. But there’s a big difference between the 2. Hemp seed oil has been pressed from hemp seed, and it’s great for a lot of things — it’s good for you, tastes great, and can be used in soap, paint — even as biodiesel fuel.
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