Clinical Pharmacokinetics

, Volume 57, Issue 5, pp 539–545 | Cite as

Exogenous Cannabinoid Efficacy: Merely a Pharmacokinetic Interaction?

  • Jennifer H. Martin
  • Jennifer Schneider
  • Catherine J. Lucas
  • Peter Galettis
Current Opinion

Abstract

Endocannabinoid pharmacology is now relatively well understood with a number of endocannabinoids and endogenous cannabinoid neurotransmitters identified and the pharmacokinetics relatively well ascertained. Further, the cannabinoid receptors are now molecularly and pharmacologically characterised and the cell processes involved in endocannabinoid transcription, synthesis, post-translational modification and protein expression are reported. Endogenous cannabinoids have been shown to have key roles in immune and pain pathways and neuro-behavioural signalling including appetite regulation. Significant recent interest has thus been shown in understanding these pathways to guide the development of agents that inhibit the natural catabolism of endogenous cannabinoids to modify pain and appetite, and to synthesise antagonists for the treatment of disease such as obesity. This research is concurrent with the renewed clinical interest in exogenous cannabinoids and their use in disease. However, the complex pharmacology and physiological effects of exogenous cannabinoids, either as individual components or in combination, as extracts or via administration of the whole plant in humans, are less well known. Yet as with all other therapeutics, including those derived from plants, knowledge of the pharmacokinetics and dynamics of the complete plant, the individual chemical molecules and their synthetic versions, including formulations and excipients is a standard part of drug development. This article covers the key pharmacological knowledge required to guide further exploration of the toxicity and efficacy of different cannabinoids and their formulations in blinded placebo-controlled studies.

Notes

Compliance with Ethical Standards

Funding

No funding was received in the preparation of this article.

Conflict of interest

Jennifer H. Martin, Jennifer Schneider, Catherine J. Lucas and Peter Galettis have no conflicts of interest directly relevant to the content of this article.

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Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  1. 1.School of Medicine and Public HealthUniversity of NewcastleNewcastleAustralia
  2. 2.School of Biomedical Sciences and PharmacyUniversity of NewcastleNewcastleAustralia
  3. 3.School of Medicine and Public HealthUniversity of Newcastle, Hunter Medical Research InstituteNewcastleAustralia
  4. 4.Discipline of Clinical PharmacologyUniversity of Newcastle, Hunter Medical Research Institute Level 3, Kookaburra Circuit, New Lambton HeightsNewcastleAustralia

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