Okyar · Expert opinion on drug metabolism & toxicology 2024 · narrative review · n=?

The role of the circadian timing system on drug metabolism and detoxification: an update.

Cited 35 times in the scientific literature.

Level 5 - mechanism / opinion, no new human data

Narrative review of preclinical and mechanistic data without systematic methodology or primary human trials.

PubMed 38753451 · doi:10.1080/17425255.2024.2356167 · record verified 2026-08-30

What was done

This was a narrative review synthesizing literature on how the molecular clock regulates drug pharmacokinetics, specifically examining the circadian behavior of metabolizing enzymes and transporter families.

What was found

No quantitative data or statistical estimates were reported in the abstract. The review describes that cytochrome P450 enzymes and ABC and SLC transporter families in the intestine, liver, kidney, and blood-brain barrier exhibit circadian variation that alters drug detoxification, with noted sex-specific differences.

Why it matters

Understanding the molecular clock's control over drug metabolism provides a framework for developing chronotherapy strategies to enhance therapeutic efficacy and minimize adverse drug effects.

Limits

The abstract reports no numerical findings, study selection criteria, or sample sizes. Findings are primarily derived from preclinical models, limiting direct clinical generalizability.

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