L-Carnitine and Reduced Malondialdehyde

Research synthesisLow evidenceSmall effect4 studies · 2 beneficial · 2 neutral · 0 harmful

Across 4 studies, 2 reported beneficial effects of L-carnitine on reducing malondialdehyde (MDA), while 2 found neutral effects; no harmful effects were observed. The predominant effect size among beneficial studies was small, with a median study duration of 56 days. Evidence is strongest in clinical populations, including women with migraine and adults in a meta-analysis, with doses ranging from 500 mg/day to 3 g/day.

Effective dose range: 500 mg/day to 3 g/day
Studied populations: adults (general), women with migraine, critically ill septic patients, female obese patients

Caveats: Evidence base is small (only 4 studies) — conclusions should be considered preliminary. Many of the included studies did not reach statistical significance — effect may be smaller than the predominant direction suggests. The meta-analysis (n=3255) showed a small significant benefit, but results from individual RCTs were mixed, with neutral findings in septic and obese populations.

Generated Jun 12, 2026

Doses used in studies

mg/day: 500–1,000 (median 750, IQR 625–875) — 2 studies
g/day: 3 (median 3, IQR 3–3) — 1 study

Time to effect

Median: 8 weeks · IQR 4.5 weeks–10 weeks · Range 7 days–2.8 months — Reported in 3 of 4 studies

4 of 4 papersPopulation:

The effects of L-carnitine supplementation on inflammatory and anti-inflammatory markers in adults: a systematic review and dose-response meta-analysis.
- 2023-09-01
- Meta-Analysis · n = 3,255
- Inflammopharmacology 31(5)
- - Samira Rastgoo
  - Sahand Tehrani Fateh
  - Mahlagha Nikbaf-Shandiz
  - Niloufar Rasaei
  - Yasaman Aali
  - Mohammad Zamani
  - Farideh Shiraseb
  - Omid Asbaghi
- PubMed: 37656233
- DOI: 10.1007/s10787-023-01323-9
7 Insights on
- Reduced Malondialdehyde
- High evidence
- Adults
L-carnitine supplementation had a significant effect on … malondialdehyde (MDA) (p = 0.001)
Effect
Beneficial
Effect size
Small
Significant
Yes
Dose
not specified in abstract
The effects of L-carnitine supplementation on inflammation, oxidative stress, and clinical outcomes in critically Ill patients with sepsis: a randomized, double-blind, controlled trial.
- 2024-03-06
- RCT · n = 60
- Nutrition journal 23(1)
- - Mahdi Keshani
  - Babak Alikiaii
  - Zahra Babaei
  - Gholamreza Askari
  - Zahra Heidari
  - Manoj Sharma
  - Mohammad Bagherniya
- PubMed: 38444016
- DOI: 10.1186/s12937-024-00934-4
9 Insights on
- Reduced Malondialdehyde
- High evidence
- Clinical
No significant between-group difference for MDA is reported; baseline and within-group changes are not detailed for MDA in the abstract results.
Effect
Neutral
Effect size
Small
Significant
No
Dose
3 g/day
Investigating the effects of co-supplementation with alpha-linolenic acid and L-carnitine on inflammatory status, oxidative stress, clinical symptoms, mental health and quality of life in women with migraine: a protocol for a randomized, triple-blind, placebo-controlled trial.
- 2024-10-08
- RCT · n = 80
- Trials 25(1)
- - Sahar Golpour-Hamedani
  - Mohammad Bagherniy
  - Fariborz Khorvash
  - Awat Feizi
  - Manoj Sharma
  - Gholamreza Askari
- PubMed: 39380085
- DOI: 10.1186/s13063-024-08500-3
11 Insights on
- Reduced Malondialdehyde
- High evidence
- Clinical
serum levels of C-reactive protein (CRP), total antioxidant capacity (TAC), nitric oxide (NO), malondialdehyde (MDA), and superoxide dismutase (SOD)
Effect
Beneficial
Effect size
Moderate
Significant
Yes
Dose
500 mg/day
L-Carnitine and synbiotic co-supplementation: beneficial effects on metabolic-endotoxemia, meta-inflammation, and oxidative-stress biomarkers in obese patients: a double blind, randomized, controlled clinical trial.
- 2023
- RCT
- Food & function 14(4)
- - Farnoush Fallah
  - Reza Mahdavi
- PubMed: 36752775
- DOI: 10.1039/d2fo03348h
7 Insights on
- Reduced Malondialdehyde
- High evidence
- Rigorous Journal
- Clinical
No significant changes were observed for the above-mentioned parameters in the L-carnitine + placebo group, except for a significant reduction in IL-10 and TNF-α
Effect
Neutral
Effect size
Small
Significant
No
Dose
2 × 500 mg/day

L-Carnitine and Reduced Malondialdehyde

The effects of L-carnitine supplementation on inflammatory and anti-inflammatory markers in adults: a systematic review and dose-response meta-analysis.

The effects of L-carnitine supplementation on inflammation, oxidative stress, and clinical outcomes in critically Ill patients with sepsis: a randomized, double-blind, controlled trial.

Investigating the effects of co-supplementation with alpha-linolenic acid and L-carnitine on inflammatory status, oxidative stress, clinical symptoms, mental health and quality of life in women with migraine: a protocol for a randomized, triple-blind, placebo-controlled trial.

L-Carnitine and synbiotic co-supplementation: beneficial effects on metabolic-endotoxemia, meta-inflammation, and oxidative-stress biomarkers in obese patients: a double blind, randomized, controlled clinical trial.