ArticleClinical pharmacology and therapeutics2023
Evaluation of Cytochrome P450-Mediated Cannabinoid-Drug Interactions in Healthy Adult Participants.
Article in Clinical pharmacology and therapeutics, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 2 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
41 citing papers in PubMed, 2 syntheses or guidelines pooled it, 57 citations in OpenAlex.
- The Evolving Role of Cannabidiol-Rich Cannabis in People with Autism Spectrum Disorder: A Systematic Review.International journal of molecular sciences · 2024Pooled it
- Does acute cannabidiol (CBD) use impair performance? A meta-analysis and comparison with placebo and delta-9-tetrahydrocannabinol (THC).Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2024Pooled it
- Cannabidiol Lacks Direct Effect on Cortical Excitability: A Randomized, Double Blind, Placebo Controlled, 3-Way Crossover Trial.Clinical pharmacology and therapeutics · 2026Trial
- Trial
- Vaporized D-limonene selectively mitigates the acute anxiogenic effects of Δ9-tetrahydrocannabinol in healthy adults who intermittently use cannabis.Drug and alcohol dependence · 2024Trial
- Cannabidiol in Dietary Supplements: Characteristics, Routes of Administration, Bioavailability, and Research Challenges.Molecules (Basel, Switzerland) · 2026Review
- Cannabidiol at the crossroads: panacea, placebo, or problem?Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2026Review
- Low-dose cannabidiol increases plasma concentrations of amitriptyline: A clinical drug-drug interaction study.British journal of clinical pharmacology · 2026Article
- Clinical Study to Evaluate Drug Interactions of Cannabidiol with Citalopram and Morphine in Healthy Adults.Clinical pharmacology and therapeutics · 2026Article
- Cannabinoid Therapies in Less-Common Disorders: Clinical Evidence and Formulation Strategies.Diseases (Basel, Switzerland) · 2026Review
- Medicinal Plants for Major Depressive Disorder.Brain sciences · 2026Review
- Pharmacotherapy for Cannabis Use Disorder: Preclinical and Clinical Models.Current topics in behavioral neurosciences · 2026Review
- Novel therapeutics in autism spectrum disorder.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2026Review
- Genotype-Specific Safety and Pharmacokinetics of Cannabidiol in Healthy Volunteers.Clinical and translational science · 2026Article
- Cannabinoid efficacy for pain: dose, chronicity and route.Frontiers in neuroscience · 2026Review
- Herbal Medicines and Drugs Interactions: Cytochrome P450 Responsibility.Current medicinal chemistry · 2026Review
- Cardiovascular Effects of Cannabidiol: From Molecular Mechanisms to Clinical Implementation.International journal of molecular sciences · 2025Review
- Orally Administered CBD/CBG Hemp Extract Reduces Severity of Ulcerative Colitis and Pain in a Murine Model.Journal of clinical medicine · 2025Article
- Predicting in vivo cannabinoid-drug interactions mediated via inhibition of UDP-glucuronosyltransferases using in vitro studies and physiologically based pharmacokinetic modeling and simulations.Drug metabolism and disposition: the biological fate of chemicals · 2025Article
- Drug interactions in a sample of inpatients diagnosed with cannabis use disorder.Journal of neural transmission (Vienna, Austria : 1996) · 2025Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 3 institutions in 1 country.
Funding
Abstract
Understanding cannabis-drug interactions is critical given regulatory changes that have increased access to and use of cannabis. Cannabidiol (CBD) and Δ-9-tetrahydrocannabinol (Δ9-THC), the most abundant phytocannabinoids, are in vitro reversible and time-dependent (CBD only) inhibitors of several cytochrome P450 (CYP) enzymes. Cannabis extracts were used to evaluate quantitatively potential pharmacokinetic cannabinoid-drug interactions in 18 healthy adults. Participant received, in a randomized cross-over manner (separated by ≥ 1 week), a brownie containing (i) no cannabis extract (ethanol/placebo), (ii) CBD-dominant cannabis extract (640 mg CBD + 20 mg Δ9-THC), or (iii) Δ9-THC-dominant cannabis extract (20 mg Δ9-THC and no CBD). After 30 minutes, participants consumed a cytochrome P450 (CYP) drug cocktail consisting of caffeine (CYP1A2), losartan (CYP2C9), omeprazole (CYP2C19), dextromethorphan (CYP2D6), and midazolam (CYP3A). Plasma and urine samples were collected (0-24 hours). The CBD + Δ9-THC brownie inhibited CYP2C19 > CYP2C9 > CYP3A > CYP1A2 (but not CYP2D6) activity, as evidenced by an increase in the geometric mean ratio of probe drug area under the plasma concentration-time curve (AUC) relative to placebo (AUC
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.