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Tier-BPublic-ready6/19/2026

L-Carnitine

Exercise performance and recovery is the main area connected here, and any felt benefit should be read together with the human evidence base.

Some human supplement-context evidence is present and directly informs the score.

Representative tier calculated from paper evidence that passed the collection audit.

Papers analyzed
38
Caution signal
Low
Representative score
66.8
Exercise performance and recovery

Main benefit evidence

The representative ingredient tier is calculated from these target-level evidence groups.

Exercise performance and recovery
3 studiesTier-B
Exercise performance and recovery
Fairly consistent positive signal in studiesFelt benefit focusSupplement context
Potential benefit studied in Exercise performance and recovery.
Open metrics
>
Exercise performance and recovery
No direct rate reported. Read direction and evidence strength together.
Evidence score
61.6
Score reflects signal strength. Tier also considers paper count, repetition, and study context.

Recent research

Updated This Month10 new papers

10 new papers were added in this period. No new risk signal was identified.

What's new

10 new papers were added.No new risk signal was identified.

Most notable recent finding

This is the most meaningful new study in the latest update.
meta-analysis
Why it mattersIt ranked highest among the newly collected papers for this ingredient in the latest update.
View paper

Study dosage range (reference only)

Lower dose
2000
mg/day
Higher dose
2000
mg/day
Dosages used in research papers, shown as reference context.
Not personal dosing instructions, recommendations, or safety limits.

Key cautions to review

Standalone side-effect signals and combination cautions are listed separately.

Caution index
0.6
Caution band: Low
Caution signals
0
Side effects + combos + curated rules
Key precautions
No combination caution signal is clear enough to show right now. This does not guarantee safety.
Standalone side effects, combination cautions, and positive combos are separated below.

Side-effect and combination signals

No standalone side-effect or combination signal is currently clear enough to show from the collected papers. This does not mean there is no concern.

Evidence summaries

Paper IDs and full lists are private. Only study types and summaries are shown.

Key Evidence #1
Public scholarly dataCitation signal: 271
review

There is compelling evidence from preclinical studies that l-carnitine and ALCAR can improve energy status, decrease oxidative stress and prevent subsequent cell death in models of adult, neonatal and pediatric brain injury.

Key Evidence #2
Public scholarly dataCitation signal: 137
observational

[Abstract]: Significance Identifying biological targets in major depressive disorder (MDD) is a critical step for development of effective mechanism-based medications. The epigenetic agent acetyl-l-carnitine (LAC) has rapid and enduring antidepressant-like eff

Key Evidence #3
Public scholarly dataCitation signal: 130
review

It is demonstrated that l-carnitine alleviates muscle injury and reduces markers of cellular damage and free radical formation accompanied by attenuation of muscle soreness, thereby reducing hypoxia-induced cellular and biochemical disruptions.

3 more summariesLimited representative sample by study type.
>
Public scholarly dataCitation signal: 124
observational

LC supplementation at a dose of 1000 mg/d was associated with a significant reduction in oxidative stress and an increase in antioxidant enzymes activities in CAD patients, which might benefit from using LC supplements to increase their anti-oxidation capacity

Public scholarly dataCitation signal: 90
review

Prolonged LC supplementation in specific conditions may affect physical performance and LC supplementation elevates fasting plasma TMAO, compound supposed to be pro-atherogenic, which was not associated with modification of determined inflammatory nor oxidativ

Public scholarly dataCitation signal: 74
review

The effects of ALC on the gut–liver–brain axis seem to identify the category of patients in which the new insights contribute most to the mechanisms of action of A LC, likely being the liver metabolism and the improvement of hepatic detoxifying mechanisms the

L-Carnitine
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