What drug interacts with CBD oil?

CBD oil interacts with many drugs by affecting liver enzymes (CYP450), potentially increasing or decreasing drug levels, with significant interactions noted for blood thinners (warfarin), seizure meds (clobazam), antidepressants, heart drugs, opioids, and CNS depressants like benzodiazepines, requiring a doctor's consultation before combining.


What drugs should not be taken with CBD?

You should avoid mixing CBD with drugs metabolized by the CYP3A4 enzyme, including many blood thinners (warfarin), seizure meds (clobazam), heart drugs (amiodarone), some statins, antidepressants, opioids, antihistamines, and anything with a grapefruit warning, as CBD can dangerously increase drug levels, causing severe side effects like drowsiness, slowed breathing, or increased bleeding risk; always consult your doctor before combining CBD with any medication. 

Who should avoid CBD oil?

CBD isn't suitable for pregnant or breastfeeding women, children, prospective parents trying for a baby, or people taking medication. Before using any CBD products, it's also best to check with your GP that they're safe for you to use and to make sure they don't interact with any medication being taken.


What are two drugs that cannot be taken together?

Two drugs that shouldn't be mixed are opioids and benzodiazepines, as both slow breathing, significantly increasing the risk of life-threatening respiratory depression, and SSRIs (like fluoxetine) and MAOIs, which can cause serotonin syndrome, a dangerous buildup of serotonin. Other major interactions include warfarin and aspirin (bleeding risk) and statins with grapefruit juice (muscle/liver damage). 

Can I take CBD oil with Fexofenadine?

There's not enough information to say that complementary medicines, herbal remedies and supplements are safe to take with fexofenadine. They're not tested in the same way as pharmacy and prescription medicines. They're generally not tested for the effect they have on other medicines.


Ask the Doctor: What medications interact with CBD oil?



What is the downside of CBD oil?

Yes, CBD has potential negatives, including common side effects like fatigue, drowsiness, diarrhea, dry mouth, and reduced appetite, plus significant risks like liver damage and serious interactions with other medications (especially blood thinners). A major concern is the lack of FDA regulation, meaning products vary widely in purity and dosage, often containing less CBD or even THC than labeled, making product quality unreliable. 

Can I take CBD with blood pressure medication?

In some cases, hypertension medicines may delay or reduce the beneficial effects of CBD oil. In others, CBD oil may delay or reduce the effectiveness of prescribed hypertension medications.

What is the 5 rule medication?

The '5 rights' of medication safety are: the right patient, the right drug, the right time, the right dose, and the right route.


What are the top 10 most common drug interactions to date?

The Top 10 Most Common Medication Interactions and How to Avoid Them
  • Warfarin and Aspirin. ...
  • Statins and Grapefruit Juice. ...
  • Warfarin and Antibiotics. ...
  • Digoxin and Quinidine. ...
  • ACE Inhibitors and Potassium Supplements. ...
  • Metformin and Contrast Dye. ...
  • Benzodiazepines and Opioids. ...
  • Warfarin and Nonsteroidal Anti-inflammatory Drugs (NSAIDs)


What drugs should not be combined in the elderly?

Risk of upper GI bleeding increases when NSAIDs are given with corticosteroids, warfarin, direct oral anticoagulants, aspirin, or other antiplatelet drugs (eg, clopidogrel). NSAIDs may also increase risk of cardiovascular events and can cause fluid retention and, sometimes, nephropathy.

Why don't doctors recommend CBD?

Still, CBD raises certain safety concerns. For example, research on mice suggests possible harm to the male reproductive system . Another concern comes from human trials for Epidiolex, which found that high doses of CBD were associated with signs of liver damage in a small number of study participants.


What happens if you take CBD oil every day?

Though it's often well-tolerated, CBD can cause side effects, such as dry mouth, diarrhea, reduced appetite, drowsiness and fatigue. CBD can also interact with other medications you're taking, such as blood thinners. Another cause for concern is the unreliability of the purity and dosage of CBD in products.

Why is CBD considered high risk?

Potential risks and harms associated with CBD use include adverse drug interactions, liver toxicity, and reproductive and developmental effects. Delta-9 THC or delta-9 THC-contaminated products may be sold as CBD.

When not to take CBD oil?

People considering or taking CBD products should always mention their use to their doctor, particularly if they are taking other medications or have underlying medical conditions, such as liver disease, kidney disease, epilepsy, heart issues, a weakened immune system, or are on medications that can weaken the immune ...


Can I take CBD while on pain meds?

Talk to your doctor before trying CBD if you take any of the following: corticosteroids (such as prednisone), tofacitinib (Xeljanz), celecoxib (Celebrex), tramadol (Ultram), certain antidepressants, including amitriptyline (Elavil), citalopram (Celexa), fluoxetine (Prozac), mirtazapine (Remeron), paroxetine (Paxil), ...

Can I take CBD with statins?

Medical Consensus: The overwhelming consensus among healthcare professionals is that caution should be exercised when combining CBD with statins. Always consult a healthcare professional before starting any new supplement, especially if you are on prescription medication.

What drugs can't be taken together?

Many medications, supplements, and even foods shouldn't be mixed due to risks like increased side effects (drowsiness, bleeding, organ damage) or reduced effectiveness, common dangerous combos include opioids with benzodiazepines/alcohol (slowed breathing), warfarin with aspirin/NSAIDs/Vitamin E (bleeding), statins with certain antifungals (muscle damage), and St. John's Wort with many drugs (severe interactions); always check with a doctor or pharmacist before combining anything. 


What are the five high risk medications?

High risk medications
  • A – Antimicrobials.
  • P – Potassium and other electrolytes, psychotropic medications.
  • I – Insulin.
  • N – Narcotics, opioids and sedatives.
  • C – Chemotherapeutic agents.
  • H – Heparin and other anticoagulants.
  • S – Safer systems (e.g. safe administration of liquid medications using oral syringes)


What are the three main drug interactions?

The three main types of drug interactions are Drug-Drug, where medications react with each other; Drug-Food/Beverage, involving interactions with substances like alcohol or grapefruit; and Drug-Condition, when an existing illness affects drug effects, creating risks like increased bleeding or worsened symptoms. These broadly fall into pharmacodynamic (how drugs affect the body) and pharmacokinetic (how the body processes drugs) categories, impacting absorption, metabolism, and elimination. 

What are the 7 R's in medical terms?

To ensure safe medication preparation and administration, nurses are trained to practice the “7 rights” of medication administration: right patient, right drug, right dose, right time, right route, right reason and right documentation [12, 13].


What is the 'right time' for medication?

Before deciding when you want to take your medications, it's always best to confirm with your doctor or pharmacist that there are no specific instructions or time of day that you need to take your medication. After that has been determined, it comes down to consistency. You want to pick a time that you will remember.

What are the 7 important details that must be on the prescription?

For a pharmacist to dispense a controlled substance, the prescription must include specific information to be considered valid:
  • Date of issue.
  • Patient's name and address.
  • Patient's date of birth.
  • Clinician name, address, DEA number.
  • Drug name.
  • Drug strength.
  • Dosage form.
  • Quantity prescribed.


What medications cannot be taken with CBD oil?

You should avoid mixing CBD with drugs metabolized by the CYP3A4 enzyme, including many blood thinners (warfarin), seizure meds (clobazam), heart drugs (amiodarone), some statins, antidepressants, opioids, antihistamines, and anything with a grapefruit warning, as CBD can dangerously increase drug levels, causing severe side effects like drowsiness, slowed breathing, or increased bleeding risk; always consult your doctor before combining CBD with any medication. 


Does CBD affect the heart?

CBD (Cannabidiol) shows potential heart benefits like reducing blood pressure, inflammation, and stress response, with studies suggesting it may help with heart failure, stroke, and arrhythmias due to its antioxidant and anti-inflammatory properties, but research is ongoing, with some animal studies showing promise in protecting heart tissue, though more human trials are needed to confirm benefits and establish safety, especially with high doses or interactions. 
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