Skip to main content
Evidence-Based Supplement Research
Evidence-Based Supplement Research
Pillser
Search
Sign UpLog In

L-Carnitine and Reduced Systolic Blood Pressure

Research synthesisLow evidenceSmall effect3 studies · 0 beneficial · 3 neutral · 0 harmful

Across 3 studies, all reported neutral small-sized effects, showing no significant reduction in systolic blood pressure with L-Carnitine supplementation. The only study reporting duration lasted 56 days, and the most-studied form was L-carnitine-tartrate (1 of 3 studies). Evidence is preliminary and inconsistent.

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Many of the studies did not reach statistical significance — effect may be smaller than the predominant direction suggests. The meta-analysis (2024, highest quality) showed high heterogeneity (I²=85%), indicating inconsistent results across trials. One RCT found that L-carnitine alone was not effective, though co-supplementation with synbiotic showed benefit — suggesting limited standalone effect on blood pressure.

Generated May 13, 2026
Doses used in studies
  • Tartrate · mg/day: 1,000 (median 1,000, IQR 1,000–1,000) — 1 study
Time to effect
Median: 8 weeks · IQR 8 weeks–8 weeks · Range 8 weeks–8 weeks — Reported in 1 of 3 studies
3 of 3 papers
Back to top