Does CBD Gummies Interact With Medications

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There is a lot that’s still unknown about CBD, but some research indicates there are CBD drug interactions with certain prescriptions, like tacrolimus. CBD is broken down by the same enzyme as 75% of medications and drugs. Here is a list of the medications that interact with CBD and if it's safe to mix.

CBD drug interactions: Is CBD safe to take with prescription medications?

If you’ve visited a store that sells health and beauty products lately, you may have noticed that products containing CBD, or cannabidiol, seem to be all the rage. Oil, chocolate, supplements, even carbonated beverages, are filling up shelves—enticing shoppers with claims that using one of these products will cure insomnia, alleviate anxiety, reduce inflammation, or treat PTSD.

And shoppers are buying it, so to speak—one recent report indicated that CBD sales are expected to hit $16 billion by 2026, up from just over $1 billion in 2018. But what exactly is CBD, and is it safe for people who are using prescription medications? Before using it, it’s important to learn about the potential CBD drug interactions.

Is CBD marijuana?

While CBD is one of the active ingredients in marijuana, using CBD itself will not get you high (the component that does that is called tetrahydrocannabinol, or THC). CBD is really just a molecule within the hemp variety of the cannabis plant, and there is at least some anecdotal evidence and preliminary research suggesting that the extraction created from this molecule has some health benefits.

CBD is thought to act on certain receptors in your brain and other parts of the body, in ways that could relieve pain, or help certain health conditions, like childhood seizure disorders. However, as with any “natural” product, the fact that it comes from plants doesn’t automatically render it innocuous. For some people, particularly those taking certain prescription medications, using CBD is risky. It has anticoagulant effects that can thin blood; it can also modestly lower blood pressure. These effects could be dangerous for people with certain medical conditions.

“Herbal products are drugs,” says Rita Alloway, Pharm.D. , research professor of nephrology at the University of Cincinnati College of Medicine. “Just because [something] is herbal … doesn’t mean it can’t interact with any of the pharmaceutically manufactured drugs that you may be taking.”

Does CBD interact with medications?

Case in point: tacrolimus , an immunosuppressive medication used to prevent organ rejection in patients who have had heart, liver, or kidney transplants. CBD interferes with the metabolism of tacrolimus, according to research conducted by Dr. Alloway , who specializes in post-transplant immunosuppression. And because tacrolimus is a narrow therapeutic index drug (meaning the window between efficacy and toxicity is very small), this interference can lead to clinically significant negative outcomes (such as kidney problems or organ rejection), she says.

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Are the concentrations in commercially available CBD high enough to cause this interaction? The evidence doesn’t really say one way or another. Dr. Alloway’s research involved a high dosage of CBD that wouldn’t be found in a retail product. However, it “highlights that a drug interaction is there,” she says. Plus, tacrolimus is metabolized in the body by a group of enzymes called cytochrome P450 and CBD is a known inhibitor of this process. What does that mean? If CBD inhibits the metabolism of tacrolimus, the patient can end up with too-high levels of tacrolimus in the body. In light of this, she urges anyone taking tacrolimus to speak with their transplant team before using CBD. Don’t get your hopes up, though—using herbal remedies, particularly those with potential interactions, is generally frowned upon by doctors looking after transplant recipients (including Dr. Alloway).

As for other drugs, well, most haven’t been studied yet. There is preliminary evidence that CBD could have a similar effect to grapefruit juice, impairing how your body metabolizes drugs, and raising serum levels of those medications in your body. And, because cytochrome P450 is responsible for the metabolism of numerous medications , proceed with caution before mixing any prescription pharmaceutical with CBD, Dr. Alloway says.

How about CBD’s therapeutic benefits?

Despite the not-so-great news about CBD for patients using tacrolimus, for some people, CBD is actually life-changing in a positive way. In 2018, for example, the CBD-derived medication Epidiolex received FDA approval for the treatment of Lennox-Gastaut syndrome and Dravet syndrome, two very rare and very severe forms of epilepsy.

But claims that CBD aids in the treatment of certain mental health and psychiatric conditions, don’t pass muster, says Roger McIntyre, MD , professor of psychiatry and pharmacology at the University of Toronto.

“There is no role right now for CBD in managing mental disorders that I [treat], such as depression, bipolar disorder … anxiety and ADHD,” he says. “We just don’t have the evidence that supports [it].”

Furthermore, most prescription medications used to manage these conditions are metabolized by cytochrome P450, making it entirely possible that CBD could interfere with—rather than enhance—treatment.

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Dr. McIntrye, who co-authored a 2018 study that concluded that healthcare providers need more information about drug-drug interactions with CBD and psychotropic medication, says much of the information out there is confusing and contradictory. Therefore, he echoes Dr. Alloway’s statement that it is absolutely prudent that patients clear the use of CBD with their doctor before giving it a go.

“[The provider] knows the individual and knows what other treatments they may or may not be taking,” Dr. McIntyre explains. “They have a panoramic view of the patient’s medications, and would have [a better idea] of whether the patient is taking another medication that may have an interaction.”

CBD Drug Interaction List: Is it Safe to take CBD with your Medications?

CBD is phenomenally popular right now. It’s being used to treat pain, anxiety, epilepsy, psychosis, and even neurodegenerative diseases like Alzheimer’s and Parkinson’s. It’s been called a “wonder drug,” without irony, and it has essentially no known downsides. It is readily available and easy to take.

At the same time, it’s important to be aware that CBD can interact with some medications. Taking it at the same time as other drugs can affect CBD’s dosage and effects, and can even change how your body breaks it down.

This article is your guide to safely taking CBD alongside your other medications and supplements. First, it has a quick overview of how CBD interacts with other drugs in your body, and then it lists the most common drugs that interact with CBD, and which you should be careful about taking at the same time. If you want to skip ahead, you can find the list here.

The CYP450 Pathway

Once a drug enters your system, its molecules are circulated through your blood and interact with your cells and tissues, doing whatever it is they’re supposed to do. Painkillers reduce pain signals and can stop swelling, antidepressants interact with brain cells to change your brain chemistry, and so on.

Once they’ve done their work, your body needs to get rid of the drug molecules. Too much of any drug in your bloodstream is toxic, and can start to harm your body.

Your body uses all kinds of systems to get rid of drugs, and the most important of these are enzymes–chemicals that break down other chemicals. The largest set of enzymes are the cytochrome p-450 group (or CYP450), which are responsible for breaking down about 75% of the medications and recreational drugs that we take.

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CBD and the CYP450 Pathway

CBD interacts with the CYP450 system in three ways. First, some of the enzymes in the system are responsible for breaking down CBD molecules, as they are for molecules of other drugs. That’s normal–nothing to worry about there.

Second, CBD can affect how CYP450 enzymes are produced by your liver, making it produce not enough of some enzymes or too much of others. This can stop your liver from processing some drugs, like the epilepsy medications clobazam and valproic acid.

Third, and most importantly, CBD can actually stop many of the CYP system’s enzymes from working properly. This is called “inhibition,” and it can cause problems if it prevents the enzymes from breaking down other drugs. Sometimes, the enzymes are responsible for activating other drugs instead, but the same problem comes up–if CBD stops the enzyme from working, then it doesn’t do its normal job, and the other drug won’t behave normally, which can have negative consequences.

For instance, there’s a group of antidepressants called selective-serotonin reuptake inhibitors, which include drugs like citalopram, norfluoxetine, and sertraline. Normally, an enzyme called CYP3A4 breaks down molecules of those drugs, making sure they don’t build up to unsafe levels that can damage cells or tissues. CBD inhibits CYP3A4, though, which means that taking CBD and sertraline at the same time could be dangerous. CYP3A4 wouldn’t break the sertraline down, and it would accumulate for far too long.

It’s worth noting that CBD isn’t the only thing that does this. The herbs St. John’s Wort and goldenseal can also stop CYP450 enzymes from working properly, as can grapefruit and starfruit juice, and even tobacco.

Drugs that Interact with CBD List

That brings us to our list. Remember, the general rule is that you need to be careful taking CBD at the same time as any drug or medication that gets processed by CYP450 enzymes. If you’re thinking about doing so, be sure to check with your doctor first.

Here are the most common of those drugs and medications. They include many painkillers, anti-inflammatories, antipsychotics, antidepressants, anticonvulsants, statins, opioids, and other groups.

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