Research

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L-carnitine supplementation improves glucose disposal and insulin sensitivity in patients with Type 2 Diabetes, primarily by enhancing mitochondrial fatty acid oxidation and reducing toxic lipid intermediates.

For T2D patients, L-carnitine supplementation may help improve how the body uses glucose and insulin sensitivity, particularly by aiding fat burning in the mitochondria. However, it may not significantly lower fasting blood sugar or HbA1c in all individuals, so it should be viewed as an adjuvant therapy rather than a primary treatment.

ModerateSupportsMEDIUM confidence
L-carnitine supplementation has an effect on glucose disposal... Carnitine-induced enhancement of non-oxidative glucose disposal was observed... L-carnitine administration resulted in higher whole body glucose uptake and glucose storage in both healthy controls and T2D patients
Judit Bene et al. · Nutrition and Diabetes · 2018

Why this rating

The paper is a review of multiple studies with mixed results; some show significant improvement in glucose disposal, while others show no change in fasting glucose or HbA1c.

Source

Role of carnitine and its derivatives in the development and management of type 2 diabetes

Judit Bene et al. · Nutrition and Diabetes · 2018

DOI 10.1038/s41387-018-0017-1

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DOI resolved against Crossref · corpus check 2026-06-10

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