🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 25% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Label Data

1 Tbsp Serving Size
31 Servings
Other Combinations Product Type
25% Evidence Coverage

Supplement Facts — Evidence Check

Calories
15 Calorie(s)
Total Carbohydrates
4 Gram(s) (1% DV)
10 mg (200% DV)
✅ 2.0× RDA — within safe limits 📚 1 studies — no high-quality reviews
RDA 5mg This product: 10mg
1500 mg
📊 Market median: 500.0mg (861 products) 📚 60 studies (Tier A: 4, B: 13)
This product: 1500mg

Other Ingredients

Glycerin Sorbitol purified Water Citric Acid Natural Flavors Potassium Sorbate Sodium Benzoate

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (99% of products) Structure/Function (88% of products) Nutrient (18% of products)

Target Groups

Vegetarian Adult (18 - 50 Years)

Product Information

📋 Directions for Use

Pre & post workout For best results, take 1 tablespoon 2 times daily at 2 separate meals.

Directions: For adults, take one (1) (15 mL) tablespoon thirty to sixty minutes before exercise with your pre-workout meal. A second serving should be taken with your post-workout meal. Do not take on an empty stomach.

Shake well before use

⚠️ Warnings & Precautions

As a reminder, discuss the supplements and medications you take with your health care providers. Do not take on an empty stomach.

As a reminder, discuss the supplements and medications you take with your health care providers.

Keep out of reach of children.

Tamper resistant: Do not use if seal under cap is broken or missing.

Warning: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

🧪 Formulation Notes

MET-Rx L-Carnitine 1500 is one of the most versatile supplements available - perfect for athletes and anyone trying to get into better shape.

Carnitine helps the body convert food to energy - providing support for endurance exercise (aerobic) and during recovery from high intensity activities such as sprinting (anaerobic).

Our formula is further enhanced with a high potency dosage of pantothenic acid (vitamin B5). Once pantothenic acid is converted into coenzyme A in the body, it works directly with carnitine to convert food to energy - providing synergistic support.

Exercise recovery Helps the body convert food to energy Promotes recovery from high intensity exercise

Vegetarian friendly

Additional Information

Supplementing with our fast-acting liquid formula helps to maximize muscle carnitine concentrations before athletic competition.

Store unopened container at room temperature and avoid excessive heat.

Refrigerate after opening

Product Details

UPC / SKU 7 86560 15904 3
DSLD Entry Date 2021-01-22
Product Type Other Combinations
Form Liquid
Brand MET-Rx
DSLD ID 241055
Data Updated 2026-04-11

Research Evidence

80 Research Sources
49 Avg Quality Score
43 Rct
14 Clinical Trial
11 Systematic Review
9 Meta Analysis
2 Regulatory Source
A Propionyl-L-carnitine for intermittent claudication
Meta Analysis The Cochrane database of systematic reviews 2021
A Carnitine supplements for people with chronic kidney disease requiring dialysis
Systematic Review The Cochrane database of systematic reviews 2022
A Acetyl-L-carnitine for patients with hepatic encephalopathy
Meta Analysis The Cochrane database of systematic reviews 2019
A Acetyl-L-carnitine for the treatment of diabetic peripheral neuropathy
Meta Analysis The Cochrane database of systematic reviews 2019
B Carnitine for fatigue in multiple sclerosis
Systematic Review The Cochrane database of systematic reviews 2012
B L-carnitine for cognitive enhancement in people without cognitive impairment
Meta Analysis The Cochrane database of systematic reviews 2017
B Carnitine for fatigue in multiple sclerosis
Systematic Review The Cochrane database of systematic reviews 2010
B Systematic Review and Meta-analysis on Effect of Carnitine, Coenzyme Q10 and Selenium on Pregnancy and Semen Parameters in Couples With Idiopathic Male Infertility
Meta Analysis Urology 2022
B Effects of Carnitine and Coenzyme Q10 on Sperm Quality and Pregnancy Rates in Men with Unexplained Infertility: A Systematic Review and Network Meta-Analysis
Systematic Review Reproductive sciences (Thousand Oaks, Calif.) 2025
B Efficacy and Effectiveness of Carnitine Supplementation for Cancer-Related Fatigue: A Systematic Literature Review and Meta-Analysis
Meta Analysis Nutrients 2017
View all evidence for Carnitine →

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