Amphetamines
Drug Name: Dextroamphetamine, Levoamphetamine, Methamphetamine
What it's Used to Treat: ADHD, narcolepsy
Risk Level: High
CBD, short for cannabidiol, is a naturally occurring compound found in the cannabis plant. It has gained immense popularity in recent years due to its potential benefits, including pain relief, stress reduction, and improved sleep.
However, despite its numerous therapeutic properties, CBD can interact with other drugs in potentially harmful ways.
In this article, we will explore the various interactions between CBD and other drugs and provide a comprehensive table listing the most common drugs that interact with CBD.
CBD is metabolized in the liver by a group of enzymes collectively known as cytochrome P450 (CYP450).
These enzymes are responsible for breaking down many medications in the body, including over-the-counter drugs, prescription medications, and even some herbal supplements. When CBD is introduced into the body, it can inhibit the CYP450 enzymes, which can alter the metabolism of other drugs, leading to potentially harmful drug interactions.
Furthermore, many drugs are metabolized by the same CYP450 enzymes that CBD inhibits, which means that co-administration of these drugs with CBD can lead to increased blood levels of the drugs, potentially resulting in adverse effects.
CBD and grapefruit share a common metabolic pathway in the liver,
which means that they can interact with many of the same drugs.
In fact, the interaction between grapefruit and certain medications is so well-known that it has been dubbed the “grapefruit effect.”
Like grapefruit, CBD can also inhibit the CYP450 enzymes in the liver, leading to increased blood levels of certain medications.

The table below provides a list of common drugs that interact with CBD.
This list is not exhaustive, and there may be other medications that can interact with CBD that are not included here. It is important to speak with your healthcare provider before taking any new medications, including CBD, to ensure that they are safe to use together.
Disclaimer: This article is for informational purposes only and should not be considered medical advice. Always consult with a qualified healthcare professional before making any changes to your medications or health regimen
| Drug Class | Drug Name | What it's Used to Treat | Risk Level |
|---|---|---|---|
| Amphetamines | Dextroamphetamine, Levoamphetamine, Methamphetamine | ADHD, narcolepsy | High |
| Angiotensin II Receptor Blockers | Losartan Potassium | High blood pressure, diabetic kidney disease | Moderate |
| Anti-anxiety | Buspirone | Anxiety | Moderate |
| Antiarrhythmics | Amiodarone Hydrochloride | Irregular heartbeat | Moderate |
| Antiarrhythmics | Dronedarone | Irregular heartbeat | Moderate |
| Antiarrhythmics | Dofetilide | Irregular heartbeat | Moderate |
| Antiarrhythmics | Disopyramide (Norpace) | Irregular heartbeat | Moderate |
| Antiarrhythmics | Propafenone Hydrochloride | Irregular heartbeat | Moderate |
| Antiarrhythmics | Quinidine | Irregular heartbeat | Moderate |
| Antibiotics | Ciprofloxacin | Bacterial infections | Moderate |
| Antibiotics | Levofloxacin | Bacterial infections | Moderate |
| Antibiotics | Doxycycline Hydrochloride | Bacterial infections | Low |
| Anticoagulants | Warfarin Sodium | Blood clots | Moderate |
| Anticonvulsants | Carbamazepine | Seizures, nerve pain | Moderate |
| Antidepressants | Sertraline | Depression, anxiety | Moderate |
| Antidepressants | Fluvoxamine Maleate | Obsessive-compulsive disorder | Moderate |
| Antidepressants | Amitriptyline Hydrochloride | Depression, nerve pain | Moderate |
| Antidiabetic Agents | Repaglinide | Type 2 diabetes | Moderate |
| Antifungal agents | Ketoconazole | Fungal infections | High |
| Antifungals | Itraconazole | Fungal infections | Moderate |
| Antihistamines | Astemizole, Terfenadine | Allergies | High |
| Antiparasitic | Praziquantel | Parasitic infections | Moderate |
| Antiplatelet agent | Clopidogrel | Blood clot prevention | Moderate |
| Anxiolytics | Buspirone Hydrochloride | Anxiety | Moderate |
| Aromatase inhibitors | Letrozole | Breast cancer | Moderate |
| Benzodiazepines | Clonazepam (Klonopin) | Anxiety, seizures, panic disorder | Moderate |
| Benzodiazepines | Nitrazepam, Alprazolam, Quazepam | Anxiety, insomnia, seizures | Moderate |
| Benzodiazepines | Clobazam | Anxiety, seizures | Moderate |
| Benzodiazepines | Diazepam | Anxiety, seizures, muscle spasms | Moderate |
| Benzodiazepines | Midazolam | Sedation, anesthesia | High |
| Benzodiazepines | Triazolam | Insomnia | High |
| Beta-blockers | Carvedilol | High blood pressure, heart failure | Moderate |
| Butyrophenones | Haloperidol | Psychotic disorders | Moderate |
| Calcium Channel Blockers | Amlodipine | High blood pressure, angina | Moderate |
| Calcium Channel Blockers | Diltiazem Hydrochloride | High blood pressure, angina | Moderate |
| Calcium Channel Blockers | Felodipine | High blood pressure | Moderate |
| Calcium Channel Blockers | Nifedipine | High blood pressure, angina | Moderate |
| Calcium Channel Blockers | Verapamil Hydrochloride | High blood pressure, angina | Moderate |
| Calcium channel blockers | Mibefradil, Verapamil Hydrochloride, Nimodipine | High blood pressure, migraines, subarachnoid hemorrhage | High |
| Calcium channel blockers | Mibefradil | High blood pressure, migraines, subarachnoid hemorrhage | High |
| Calcium channel blockers | Nimodipine | High blood pressure, migraines, subarachnoid hemorrhage | High |
| Cardiac Glycosides | Digoxin | Heart failure, atrial fibrillation | Moderate |
| DE4 Inhibitors | Apremilast | Psoriasis, psoriatic arthritis | Moderate |
| Epidermal Growth Factor Receptor Inhibitors | Erlotinib | Non-small cell lung cancer, pancreatic cancer | Moderate |
| Erectile Dysfunction Agents | Sildenafil | Erectile dysfunction | Moderate |
| Erectile Dysfunction Agents | Tadalafil | Erectile dysfunction | Moderate |
| Ergot alkaloids | Ergotamine | Migraines | High |
| HMG-CoA reductase inhibitors (statins) | Simvastatin | High cholesterol | Moderate |
| Hormones | ASTROGEN | Hormone replacement therapy | Moderate |
| Hormones | Testosterone Esters | Hormone replacement therapy, hypogonadism | Moderate |
| Hormones | Estrogens | Hormone replacement therapy | Moderate |
| Immunosuppressants | Cyclosporin | Organ transplant rejection | High |
| Immunosuppressants | Tacrolimus | Organ transplant rejection, autoimmune diseases | High |
| Kinase Inhibitors | Imatinib | Chronic myelogenous leukemia | Moderate |
| Macrolide antibiotics | Clarithromycin | Bacterial infections | Moderate |
| Macrolide antibiotics | Erythromycin | Bacterial infections | Moderate |
| Nitroimidazole Antibiotics | Metronidazole | Bacterial infections, parasitic infections | Moderate |
| Opioid Analgesics | Oxycodone Hydrochloride | Moderate to severe pain | Moderate |
| Opioids | Methadone | Pain management, opioid dependence | Moderate |
| Opioids | Buprenorphine Hydrochloride | Moderate to severe pain, opioid addiction treatment | Moderate |
| Opioids | Codeine Phosphate | Mild to moderate pain | Moderate |
| Protease inhibitors | Ritonavir | HIV | High |
| Proton Pump Inhibitors | Esomeprazole | GERD, ulcers | Moderate |
| Proton Pump Inhibitors | Omeprazole | Gastroesophageal reflux disease, ulcers | Moderate |
| Selective Estrogen Receptor Modulators | Tamoxifen Citrate | Breast cancer | Moderate |
| Statins | Atorvastatin | High cholesterol | Moderate |
| Statins | Fluvastatin | High cholesterol | Moderate |
| Statins | Lovastatin | High cholesterol | High |
| Tricyclic antidepressants | Clomipramine | Depression, OCD | Moderate |
| Bronchodilator | Theophylline | Asthma, chronic obstructive pulmonary disease (COPD) | Moderate |
| Hormone Replacement Therapy | Estrogen | Menopausal symptoms, osteoporosis | High |
Drug Name: Dextroamphetamine, Levoamphetamine, Methamphetamine
What it's Used to Treat: ADHD, narcolepsy
Risk Level: High
Drug Name: Losartan Potassium
What it's Used to Treat: High blood pressure, diabetic kidney disease
Risk Level: Moderate
Drug Name: Buspirone
What it's Used to Treat: Anxiety
Risk Level: Moderate
Drug Name: Amiodarone Hydrochloride
What it's Used to Treat: Irregular heartbeat
Risk Level: Moderate
Drug Name: Dronedarone
What it's Used to Treat: Irregular heartbeat
Risk Level: Moderate
Drug Name: Dofetilide
What it's Used to Treat: Irregular heartbeat
Risk Level: Moderate
Drug Name: Disopyramide (Norpace)
What it's Used to Treat: Irregular heartbeat
Risk Level: Moderate
Drug Name: Propafenone Hydrochloride
What it's Used to Treat: Irregular heartbeat
Risk Level: Moderate
Drug Name: Quinidine
What it's Used to Treat: Irregular heartbeat
Risk Level: Moderate
Drug Name: Ciprofloxacin
What it's Used to Treat: Bacterial infections
Risk Level: Moderate
Drug Name: Levofloxacin
What it's Used to Treat: Bacterial infections
Risk Level: Moderate
Drug Name: Doxycycline Hydrochloride
What it's Used to Treat: Bacterial infections
Risk Level: Low
Drug Name: Warfarin Sodium
What it's Used to Treat: Blood clots
Risk Level: Moderate
Drug Name: Carbamazepine
What it's Used to Treat: Seizures, nerve pain
Risk Level: Moderate
Drug Name: Sertraline
What it's Used to Treat: Depression, anxiety
Risk Level: Moderate
Drug Name: Fluvoxamine Maleate
What it's Used to Treat: Obsessive-compulsive disorder
Risk Level: Moderate
Drug Name: Amitriptyline Hydrochloride
What it's Used to Treat: Depression, nerve pain
Risk Level: Moderate
Drug Name: Repaglinide
What it's Used to Treat: Type 2 diabetes
Risk Level: Moderate
Drug Name: Ketoconazole
What it's Used to Treat: Fungal infections
Risk Level: High
Drug Name: Itraconazole
What it's Used to Treat: Fungal infections
Risk Level: Moderate
Drug Name: Astemizole, Terfenadine
What it's Used to Treat: Allergies
Risk Level: High
Drug Name: Praziquantel
What it's Used to Treat: Parasitic infections
Risk Level: Moderate
Drug Name: Clopidogrel
What it's Used to Treat: Blood clot prevention
Risk Level: Moderate
Drug Name: Buspirone Hydrochloride
What it's Used to Treat: Anxiety
Risk Level: Moderate
Drug Name: Letrozole
What it's Used to Treat: Breast cancer
Risk Level: Moderate
Drug Name: Clonazepam (Klonopin)
What it's Used to Treat: Anxiety, seizures, panic disorder
Risk Level: Moderate
Drug Name: Nitrazepam, Alprazolam, Quazepam
What it's Used to Treat: Anxiety, insomnia, seizures
Risk Level: Moderate
Drug Name: Clobazam
What it's Used to Treat: Anxiety, seizures
Risk Level: Moderate
Drug Name: Diazepam
What it's Used to Treat: Anxiety, seizures, muscle spasms
Risk Level: Moderate
Drug Name: Midazolam
What it's Used to Treat: Sedation, anesthesia
Risk Level: High
Drug Name: Triazolam
What it's Used to Treat: Insomnia
Risk Level: High
Drug Name: Carvedilol
What it's Used to Treat: High blood pressure, heart failure
Risk Level: Moderate
Drug Name: Haloperidol
What it's Used to Treat: Psychotic disorders
Risk Level: Moderate
Drug Name: Amlodipine
What it's Used to Treat: High blood pressure, angina
Risk Level: Moderate
Drug Name: Diltiazem Hydrochloride
What it's Used to Treat: High blood pressure, angina
Risk Level: Moderate
Drug Name: Felodipine
What it's Used to Treat: High blood pressure
Risk Level: Moderate
Drug Name: Nifedipine
What it's Used to Treat: High blood pressure, angina
Risk Level: Moderate
Drug Name: Verapamil Hydrochloride
What it's Used to Treat: High blood pressure, angina
Risk Level: Moderate
Drug Name: Mibefradil, Verapamil Hydrochloride, Nimodipine
What it's Used to Treat: High blood pressure, migraines, subarachnoid hemorrhage
Risk Level: High
Drug Name: Mibefradil
What it's Used to Treat: High blood pressure, migraines, subarachnoid hemorrhage
Risk Level: High
Drug Name: Nimodipine
What it's Used to Treat: High blood pressure, migraines, subarachnoid hemorrhage
Risk Level: High
Drug Name: Digoxin
What it's Used to Treat: Heart failure, atrial fibrillation
Risk Level: Moderate
Drug Name: Apremilast
What it's Used to Treat: Psoriasis, psoriatic arthritis
Risk Level: Moderate
Drug Name: Erlotinib
What it's Used to Treat: Non-small cell lung cancer, pancreatic cancer
Risk Level: Moderate
Drug Name: Sildenafil
What it's Used to Treat: Erectile dysfunction
Risk Level: Moderate
Drug Name: Tadalafil
What it's Used to Treat: Erectile dysfunction
Risk Level: Moderate
Drug Name: Ergotamine
What it's Used to Treat: Migraines
Risk Level: High
Drug Name: Simvastatin
What it's Used to Treat: High cholesterol
Risk Level: Moderate
Drug Name: ASTROGEN
What it's Used to Treat: Hormone replacement therapy
Risk Level: Moderate
Drug Name: Testosterone Esters
What it's Used to Treat: Hormone replacement therapy, hypogonadism
Risk Level: Moderate
Drug Name: Estrogens
What it's Used to Treat: Hormone replacement therapy
Risk Level: Moderate
Drug Name: Cyclosporin
What it's Used to Treat: Organ transplant rejection
Risk Level: High
Drug Name: Tacrolimus
What it's Used to Treat: Organ transplant rejection, autoimmune diseases
Risk Level: High
Drug Name: Imatinib
What it's Used to Treat: Chronic myelogenous leukemia
Risk Level: Moderate
Drug Name: Clarithromycin
What it's Used to Treat: Bacterial infections
Risk Level: Moderate
Drug Name: Erythromycin
What it's Used to Treat: Bacterial infections
Risk Level: Moderate
Drug Name: Metronidazole
What it's Used to Treat: Bacterial infections, parasitic infections
Risk Level: Moderate
Drug Name: Oxycodone Hydrochloride
What it's Used to Treat: Moderate to severe pain
Risk Level: Moderate
Drug Name: Methadone
What it's Used to Treat: Pain management, opioid dependence
Risk Level: Moderate
Drug Name: Buprenorphine Hydrochloride
What it's Used to Treat: Moderate to severe pain, opioid addiction treatment
Risk Level: Moderate
Drug Name: Codeine Phosphate
What it's Used to Treat: Mild to moderate pain
Risk Level: Moderate
Drug Name: Ritonavir
What it's Used to Treat: HIV
Risk Level: High
Drug Name: Esomeprazole
What it's Used to Treat: GERD, ulcers
Risk Level: Moderate
Drug Name: Omeprazole
What it's Used to Treat: Gastroesophageal reflux disease, ulcers
Risk Level: Moderate
Drug Name: Tamoxifen Citrate
What it's Used to Treat: Breast cancer
Risk Level: Moderate
Drug Name: Atorvastatin
What it's Used to Treat: High cholesterol
Risk Level: Moderate
Drug Name: Fluvastatin
What it's Used to Treat: High cholesterol
Risk Level: Moderate
Drug Name: Lovastatin
What it's Used to Treat: High cholesterol
Risk Level: High
Drug Name: Clomipramine
What it's Used to Treat: Depression, OCD
Risk Level: Moderate
Drug Name: Theophylline
What it's Used to Treat: Asthma, chronic obstructive pulmonary disease (COPD)
Risk Level: Moderate
Drug Name: Estrogen
What it's Used to Treat: Menopausal symptoms, osteoporosis
Risk Level: High
** It is important to note that the potential interactions listed in the table above are not absolute,
and the degree of interaction can vary depending on the individual and the specific drugs.
While CBD can have many potential health benefits, there are some risks and side effects associated with combining CBD with other medications. These include:
To minimize the risk of adverse drug interactions with CBD, it is important to speak with your healthcare provider before taking any new medications, including CBD.
Your healthcare provider can provide guidance on whether it is safe to use CBD with your current medications and recommend any necessary adjustments to your medication regimen.

While anyone taking medication should be aware of the potential for drug interactions, there are some groups of people who may be at higher risk for CBD interactions:
CBD can be consumed in a variety of ways, including via tinctures, oils, edibles, and topicals. Each consumption method offers its own benefits and drawbacks with regard to the speed at which CBD takes effect. While it is not always easy to predict how an individual might react to a specific form of CBD consumption, it is important to be mindful of possible drug interactions.
Inhaled forms of CBD, such as smoking or vaping, are more likely to reach high concentrations quickly than edibles. However, it is important to note that these inhalation methods may have a greater potential for possible drug interactions due to the higher concentration of the medication entering the bloodstream.
On the other hand, topical formulations are unlikely to absorb into the bloodstream enough to interact with other medications.
It is important to always speak with your doctor before consuming any form of CBD, as they can provide insight on possible drug interactions and recommend the safest course of action. Additionally, it is also wise to be mindful of how much CBD you are taking at one time
Yes, CBD can interact with other cannabinoids.
These interactions are called the entourage effect and this is an important part of how CBD works to produce its beneficial effects on our bodies and mind.
The entourage effect describes the combined impact of various active compounds found in plants that synergize to create a stronger effect than any single compound would have on its own.
CBD interacts with other cannabinoids, such as THC, terpenes, and flavonoids, to create a stronger effect than one single compound would have on its own.
This is why full-spectrum CBD oils are more effective than many isolated compounds found in hemp extract. The entourage effect has been seen to produce greater therapeutic effects compared to CBD isolate and can help reduce many of the side effects associated with CBD. By including an array of cannabinoids, terpenes and flavonoids in your product, you can create a unique blend that has improved effectiveness compared to stand-alone products.
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