Amino Acid & Peptide · Compound

L-Carnitine L-Tartrate

Provisional Strong Scoreamino_acid

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Published March 18, 2026Last updated March 18, 2026Methodology · Editorial policy · Report an error

Evidence review status: unreviewed

Legacy index-continuity record: the score and narrative are provisional and must not be represented as validated or human-approved.

Review flags: AWAITING_SEMANTIC_VALIDATION

Provisional Summary

L-carnitine L-tartrate is a bioavailable form of L-carnitine bound to tartaric acid that enhances fatty acid oxidation in mitochondria. This compound facilitates the transport of long-chain fatty acids across mitochondrial membranes via the carnitine palmitoyltransferase enzyme system for energy production.

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Screened PMID Records

Reported Benefits

Pending

Synergy Review

At a Glance

CategoryAmino Acid & Peptide

GroupCompound

Public Score StatusProvisional Strong

Primary KeywordL-carnitine L-tartrate benefits

L-Carnitine L-Tartrate close-up macro showing natural texture and detail — rich in fatty acid transporter, mitochondrial enhancer, ergogenic aid

L-Carnitine L-Tartrate — botanical close-up

Reported Benefits (Provisional)

Supports fat metabolism and weight management by facilitating the transport of fatty acids into mitochondria for energy production. - Enhances recovery from exercise by reducing muscle soreness and accelerating tissue repair. - Reduces muscle damage markers by up to 40% post-workout, as shown in clinical studies. - Improves athletic performance by increasing power output and endurance during training. - Boosts antioxidant defenses, protecting cells from exercise-induced oxidative stress. - Supports cardiovascular health by improving lipid profiles and reducing inflammation. - Increases lean muscle mass when combined with resistance exercise. - May help reduce fatigue and improve overall vitality in active individuals.

Origin & History

Natural habitat

L-Carnitine L-Tartrate is a stable form of L-carnitine combined with tartaric acid, found in red meat and dairy. It is synthesized for supplements to enhance bioavailability.

“Used since the 1980s in sports nutrition for its potential benefits in exercise recovery and weight management.”Traditional Medicine

Research Narrative (Provisional)

RCTs have demonstrated L-Carnitine L-Tartrate's benefits in reducing muscle soreness and enhancing recovery. Meta-analyses support its role in fat metabolism.

Preparation & Dosage

Dosage guidance is withheld because the publication gate has not recorded adequate support for this profile.

Nutritional Profile

- Amino acid derivative. - Involved in energy production. - Found in animal-based foods.

Reported Mechanism (Provisional)

Mechanism of Action

L-carnitine L-tartrate activates carnitine palmitoyltransferase I (CPT-1), the rate-limiting enzyme that transports long-chain fatty acids into mitochondria for beta-oxidation. The compound also modulates androgen receptor expression and reduces oxidative stress markers like malondialdehyde. Additionally, it enhances insulin sensitivity through AMPK activation and improves mitochondrial biogenesis.

Clinical Narrative (Provisional)

Human studies with 1-3 grams daily show L-carnitine L-tartrate reduces muscle damage markers (creatine kinase, lactate dehydrogenase) by up to 40% post-exercise. Randomized controlled trials in resistance-trained men demonstrate improved recovery and reduced muscle soreness within 24-48 hours. Evidence for fat loss is mixed, with modest effects primarily in older adults or those with carnitine deficiency. Most studies are small-scale with 20-40 participants over 2-12 week periods.

Also Known As

(R)-3-hydroxy-4-(trimethylammonio)butanoate L-tartrateLCLTCarnitine tartrateL-Carnitine tartrate saltPropanoylcarnitine tartrateVitamin BT tartrateLevocarnitine L-tartrate

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These statements have not been evaluated by the Food and Drug Administration. This content is for informational purposes only and is not intended to diagnose, treat, cure, or prevent any disease.

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