Evidence map›Paper›PMID 36467779›Full record

ArticleMedical cannabis and cannabinoids

The Influence of Cannabidiol on the Pharmacokinetics of Methylphenidate in Healthy Subjects.

John S Markowitz, Ludmila De Faria, Qingchen Zhang, Philip W Melchert, Reginald F Frye, Brandon O Klee, Yuli Qian

Open access · goldAbstract read
In one paragraph

Article in Medical cannabis and cannabinoids. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 14% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 12 citations in OpenAlex.

  1. Pooled it
  2. Increased Plasma Concentrations of 6-oxo-Methylphenidate inMedicinal chemistry research : an international journal for rapid communications on design and mechanisms of action of biologically active agents · 2025
    Article
  3. An in vitro evaluation of common botanical extracts on carboxylesterase 1 catalytic activity.Drug metabolism and disposition: the biological fate of chemicals · 2025
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

John S MarkowitzDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA.
Ludmila De FariaDepartment of Psychiatry, University of Florida, Gainesville, Florida, USA.
Qingchen ZhangDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA.
Philip W MelchertDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA.
Reginald F FryeDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA.
Brandon O KleeDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA.
Yuli QianDepartment of Pharmacotherapy and Translational Research, University of Florida, Gainesville, Florida, USA.
University of Florida · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Introduction: Cannabidiol (CBD) is a widely utilized nonpsychoactive cannabinoid available as an over-the-counter supplement, a component of medical cannabis, and a prescriptive treatment of childhood epilepsies. In vitro studies suggest CBD may inhibit a number of drug-metabolizing enzymes, including carboxylesterase 1 (CES1). The aim of this study was to evaluate effect of CBD on the disposition of the CES1 substrate methylphenidate (MPH). Methods: In a randomized, placebo-controlled, crossover study, 12 subjects ingested 750 mg of CBD solution, or alternatively, a placebo solution twice daily for a 3-day run-in period followed by an additional CBD dose (or placebo) and a single 10 mg dose of MPH and completed serial blood sampling for pharmacokinetic analysis. MPH and CBD concentrations were measured by liquid chromatography with tandem mass spectrometry. Results: The C Discussion/Conclusion: Although the upper bound of bioequivalence was not met, the mean estimates of AUC and C

Indexed as

CannabidiolCannabisCarboxylesteraseCarboxylesterase 1Drug interactionMethylphenidate

Identifiers

PMID36467779
PMCPMC9710314
OpenAlexW4308354629

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

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 OpenQuestion graph.