Carnitine L-Tartrate

Both enhance recovery and performance

Comprehensive recovery and strength support

⟡ Omega-3

Omega-3 may enhance carnitine's effects on fat oxidation

Improved fat metabolism and recovery

Top studies from 20+ peer-reviewed papers

📚systematic-review

Mielgo-Ayuso J et al. • Nutrients (2021)

“However, chronic or acute l-C or GPL-C supplementation did not present improvements on moderate exercise performance.”

Key Findings:

The main aim of the present systematic review was to determine the effects of oral l-C supplementation on moderate- (50-79% V˙O2 max) and high-intensity (≥80% V˙O2 max) exercise performance and to show the effective doses and ideal timing of its intake.
Out of those, three measured the effect of an acute supplementation, and three described the effect of a chronic supplementation, but no significant improvements on performance were found.
On the other hand, the effects of l-C supplementation on moderate exercise performance variables were observed in six studies.
In summary, l-C supplementation with 3 to 4 g ingested between 60 and 90 min before testing or 2 to 2.72 g/day for 9 to 24 weeks improved high-intensity exercise performance.

📊rctn=80

Stefan M et al. • Nutrients (2021)

“These findings agree with previous observations among healthy adult subjects and demonstrate that L-carnitine tartrate supplementation beyond 35 days is beneficial for improving recovery and reducing fatigue following exercise across gender and age.”

Key Findings:

Compared to placebo, L-carnitine tartrate supplementation was able to improve perceived recovery and soreness (p = 0.021), and lower serum creatine kinase (p = 0.016).
These findings agree with previous observations among healthy adult subjects and demonstrate that L-carnitine tartrate supplementation beyond 35 days is beneficial for improving recovery and reducing fatigue following exercise across gender and age.
Further research warranted to confirm findings

📚meta-analysisn=456

Fielding R et al. • Nutrients (2018)

“L-Carnitine supplementation significantly reduced exercise-induced muscle damage markers and improved recovery.”

Key Findings:

L-Carnitine reduced muscle soreness and serum creatine kinase levels post-exercise
Recovery was accelerated with supplementation of 1-2 g/day
L-Carnitine L-Tartrate form showed particular benefit for exercise recovery

📊rctn=28

Sawicka AK et al. • Nutrients (2018)

“Positive and negative aspects of l-carnitine supplementation need to be clarified.”

Key Findings:

A marked increase in free plasma carnitine concentration was observed due to l-carnitine supplementation.
No substantial changes in other parameters were noted.
In the current study, supplementation for 24 weeks affected neither the skeletal muscle strength nor circulating markers in healthy women over 65 years of age.
Positive and negative aspects of l-carnitine supplementation need to be clarified.

📊rctn=14

Compare with Others Find Based on Your Goals

Wall BT et al. • Journal of Physiology (2011)

“[Small study, n=14] Carnitine increased muscle carnitine and improved exercise performance.”

Key Findings:

20% increase in muscle carnitine
Improved work output
Better fuel utilization

View all 20+ studies

What would you like to do next?

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Clt6.5

Carnitine L-Tartrate

amino acid

L-Carnitine L-Tartrate (LCLT)

Recovery-optimized form of carnitine with evidence for muscle recovery, androgen receptor upregulation, and exercise performance.

performancerecoverymuscleandrogen receptorsathletic performancecarnitine

20+ studies

Evidence

Reviewed 19 days ago

high

Safety

2000-3000mg (2-3g) daily

Dose

2-8 weeks

Time to Effect

L-Carnitine L-Tartrate powder or capsules

Best Form

Mechanisms of Action

📈

Androgen Receptor Upregulation

Increases androgen receptor density in muscle

🛡️

Muscle Damage Reduction

Reduces markers of exercise-induced muscle damage

🔥

Fatty Acid Transport

Shuttles fats into mitochondria for energy

Biological PathwayBeta

How Carnitine L-Tartrate works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.

Supplement

Molecular Target

Biological Process

Health Outcome

Strong

Moderate

Emerging

strong

moderate

emerging

Tap node to isolate • Pinch to zoom • Tap edge for research

Recommended Dose

2000-3000mg (2-3g) daily

1000mg4000mg

Optimal Timing

Pre or post-workout
With carbohydrates for enhanced uptake

Take with food

Available Forms

Form	Type
💊L-Carnitine L-Tartrate powder or capsules	Recommended
💧Liquid L-carnitine (often LCLT)	Alternative

LCLT is ~68% L-carnitine by weight. Distinct from ALCAR (cognitive focus) or plain L-carnitine.

Duration

Minimum: 2 weeks

Optimal: 8 weeks

Cycling: Not required

Note: Insulin enhances carnitine uptake — taking with carbs improves muscle accumulation. Can split into 2 doses.

✨

Reduced Soreness

Less DOMS after training

📅 Acute

65% of users notice thispositive

🔄

Faster Recovery

Quicker return to baseline after hard training

📅 Acute and cumulative

60% of users notice thispositive

🛡️

Reduced Muscle Damage Markers

Lower CK and other damage markers

📅 Acute

55% of users notice thispositive

High SafetyMax safe dose: Up to 4g/day used in studies

🟢

Pregnant/nursing

Likely safe; consult doctor

Who Should NOT Take This

Seizure disorders (some concern with carnitine forms)

Drug Interactions

Thyroid medicationsmild

May affect thyroid hormone action

Blood thinners (warfarin)mild

May enhance anticoagulant effect

Possible Side Effects

GI upset

milduncommon

Tip: Take with food

Fishy body odor (high doses)

mildrare

Tip: Reduce dose

Warnings

LCLT is different from ALCAR — LCLT for recovery, ALCAR for cognition
Take with carbs for best muscle uptake

⟡ Creatine

Both enhance recovery and performance

Comprehensive recovery and strength support

⟡ Omega-3

Omega-3 may enhance carnitine's effects on fat oxidation

Improved fat metabolism and recovery

Top studies from 20+ peer-reviewed papers

📚systematic-review

Mielgo-Ayuso J et al. • Nutrients (2021)

“However, chronic or acute l-C or GPL-C supplementation did not present improvements on moderate exercise performance.”

Key Findings:

The main aim of the present systematic review was to determine the effects of oral l-C supplementation on moderate- (50-79% V˙O2 max) and high-intensity (≥80% V˙O2 max) exercise performance and to show the effective doses and ideal timing of its intake.
Out of those, three measured the effect of an acute supplementation, and three described the effect of a chronic supplementation, but no significant improvements on performance were found.
On the other hand, the effects of l-C supplementation on moderate exercise performance variables were observed in six studies.
In summary, l-C supplementation with 3 to 4 g ingested between 60 and 90 min before testing or 2 to 2.72 g/day for 9 to 24 weeks improved high-intensity exercise performance.

📊rctn=80

Stefan M et al. • Nutrients (2021)

“These findings agree with previous observations among healthy adult subjects and demonstrate that L-carnitine tartrate supplementation beyond 35 days is beneficial for improving recovery and reducing fatigue following exercise across gender and age.”

Key Findings:

Compared to placebo, L-carnitine tartrate supplementation was able to improve perceived recovery and soreness (p = 0.021), and lower serum creatine kinase (p = 0.016).
These findings agree with previous observations among healthy adult subjects and demonstrate that L-carnitine tartrate supplementation beyond 35 days is beneficial for improving recovery and reducing fatigue following exercise across gender and age.
Further research warranted to confirm findings

📚meta-analysisn=456

Fielding R et al. • Nutrients (2018)

“L-Carnitine supplementation significantly reduced exercise-induced muscle damage markers and improved recovery.”

Key Findings:

L-Carnitine reduced muscle soreness and serum creatine kinase levels post-exercise
Recovery was accelerated with supplementation of 1-2 g/day
L-Carnitine L-Tartrate form showed particular benefit for exercise recovery

📊rctn=28

Sawicka AK et al. • Nutrients (2018)

“Positive and negative aspects of l-carnitine supplementation need to be clarified.”

Key Findings:

A marked increase in free plasma carnitine concentration was observed due to l-carnitine supplementation.
No substantial changes in other parameters were noted.
In the current study, supplementation for 24 weeks affected neither the skeletal muscle strength nor circulating markers in healthy women over 65 years of age.
Positive and negative aspects of l-carnitine supplementation need to be clarified.

📊rctn=14

Compare with Others Find Based on Your Goals

Wall BT et al. • Journal of Physiology (2011)

“[Small study, n=14] Carnitine increased muscle carnitine and improved exercise performance.”

Key Findings:

20% increase in muscle carnitine
Improved work output
Better fuel utilization

View all 20+ studies

What would you like to do next?

Related Supplements

CM7.5

Citrulline Malate

7.5/10

Combines citrulline for nitric oxide production with malic acid for ATP synthesis — reduces fatigue and enhances exercise endurance.

Ct9.5

Creatine

9.5/10

Increases phosphocreatine stores for faster ATP regeneration, boosting strength, power output, and cognitive function under stress.

Bc9.0

BCAAs

Leucine, isoleucine, and valine metabolized directly in muscle tissue — support protein synthesis and reduce exercise fatigue.

Lci9.0

L-Citrulline