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A Systematic Review on the Pharmacokinetics of Cannabidiol in Humans

Open access
Millar, Sophie A., Stone, Nicole L., Yates, Andrew S., O'Sullivan, Saoirse E.·2018·Frontiers in Pharmacology

Abstract

Background: Cannabidiol is being pursued as a therapeutic treatment for multiple conditions, usually by oral delivery. Animal studies suggest oral bioavailability is low, but literature in humans is not sufficient. The aim of this review was to collate published data in this area. Methods: A systematic search of PubMed and EMBASE (including MEDLINE) was conducted to retrieve all articles reporting pharmacokinetic data of CBD in humans. Results: Of 792 articles retireved, 24 included pharmacokinetic parameters in humans. The half-life of cannabidiol was reported between 1.4-10.9 hours after oromucosal spray, 2-5 days after chronic oral administration, 24 hours after i.v., and 31 hours after smoking. Bioavailability following smoking was 31% however no other studies attempted to report the absolute bioavailability of CBD following other routes in humans, despite i.v formulations being available. The area-under-the-curve and Cmax increase in dose-dependent manners and are reached quicker following smoking/inhalation compared to oral/oromucosal routes. Cmax is increased during fed states and in lipid formulations. Tmax is reached between 0-4 hours. Conclusions: This review highlights the paucity in data and some discrepancy in the pharmacokinetics of cannabidiol, despite its widespread use in humans. Analysis and understanding of properties such as bioavailability and half-life is critical to future therapeutic success, and robust data from a variety of formulations is required.

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Metadata

Authors
Millar, S. A., Stone, N. L., Yates, A. S., & O'Sullivan, S. E.
Venue
Frontiers in Pharmacology
Published
2018-11-26
Volume
9
Pages
1365-1365
ISSN
1663-9812 (ISSN-L)
OpenAlex
W2902043534
Cited by
560
References
10
FWCI
7.45
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: A Systematic Review on the Pharmacokinetics of Cannabidiol in Humans. https://app.cochat.ai/papers/10.3389/fphar.2018.01365
The paper
Millar, S. A., Stone, N. L., Yates, A. S., & O'Sullivan, S. E. (2018). A Systematic Review on the Pharmacokinetics of Cannabidiol in Humans. Frontiers in Pharmacology. https://doi.org/10.3389/fphar.2018.01365

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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