🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

Product Label

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Label Data

1 White Capsule(s) Serving Size
Non-Nutrient/Non-Botanical Product Type
100% Evidence Coverage

Supplement Facts — Evidence Check

500 mg
📊 Market median: 500.0mg (861 products) 📚 60 studies (Tier A: 4, B: 13)
This product: 500mg

Other Ingredients

Gelatin

Label Claims — Verification

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

Target Groups

Adult Male (18-50 Years)

Product Information

📋 Directions for Use

DIRECTIONS: As a dietary supplement, take contents of one packet daily with food.

To ensure a complete nutritional program, take daily with these GNC products: - Ultra Probiotic Complex 25 - Total Lean(TM) CLA - SuperFoods Whole Foods - Total Lean(TM) Breakfast Squares

⚠️ Warnings & Precautions

WARNING: Consult your physician prior to using this product if you are pregnant, taking medication, or have a medical condition.

Discontinue use two weeks prior to surgery.

KEEP OUT OF REACH OF CHILDREN.

Additional Information

Carnitine 500

ACTUAL SIZE

Carnipure(TM)

- Carnitine 500 - The most clinically studied and most concentrated form of carnitine. This naturally-occurring amino acid facilitates the metabolism of fatty acids and helps fuel muscles and support exercise recovery.

GNC QUALITY COMMITMENT For more than 77 years, GNC has been the leader in the development of superior nutritional supplements. Our products are produced using only fresh, high-quality ingredients and are manufactured under the strictest quality controls. GNC GUARANTEE If you are not 100% completely satisfied, return the unused portion of the product with your receipt to a GNC store within 30 days. Our trained sales staff will either refund your purchase price or, if you prefer, assist you in finding a replacement product to help you LIVE WELL.

It offers an advanced multivitamin formula with powerful ingredients to help increase mental focus and ramp up metabolism, as well as a strategic blend of natural ingredients to address energy concerns and support prostate health and vitality." - Frank J. Costa, M.D.

The components in this program not only support overall wellness, but also offer support for energy and vitality.

CODE 346911 HNG

Store in a cool, dry place.

Boosts energy, fuel muscles & supports exercise recovery - Improves mental alertness & energy

PHYSICIAN ENDORSED

{signature} Dr. Frank J. Costa M.D.

"Active men need extra energy to power their bodies during the day.

Product Details

DSLD Entry Date 2013-12-24
Product Type Non-Nutrient/Non-Botanical
Form Capsule
Brand GNC Mega Men
Bundle Energy & Metabolism
DSLD ID 27461
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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