🟢 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 Vegetarian Capsule(s) Serving Size
90 Servings
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

Magnesium Stearate Capsule Microcrystalline Cellulose Rice Bran Silica

Label Claims — Verification

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) Gluten Free Dairy Free Sugar Free

Product Information

⚠️ Warnings & Precautions

Caution: As with any supplement, consult your healthcare practitioner before using this product, especially if you are pregnant, nursing, or are under medical supervision for any reason.

Keep out of reach of children.

For serious adverse event reporting call (877) 455-2826.

🧪 Formulation Notes

We only put our name on formulas that meet our unrivaled quality standards, and we continue raising the bar on these standards without raising the bar on your budget. Our supplements are GMP (Good Manufacturing Practices) certified, ingredient verified, screened for heavy metals, and formulated without questionable fillers, artificial colors, sweeteners, flavors, and other problematic ingredients. We scrutinize every detail, so you don't have to, because we are, and always have been, your Original good4u Grocers. To your health, - The Isely Family

Our supplements are GMP (Good Manufacturing Practices) certified, ingredient verified, screened for heavy metals, and formulated without questionable fillers, artificial colors, sweeteners, flavors, and other problematic ingredients.

Muscle support

Gluten free

Vegetarian

Made in USA

BPA Free

Contains no: Sugar, salt, dairy, yeast, wheat, gluten, corn, soy, preservatives, artificial colors or flavors.

Additional Information

Our unique story It was 1955 when Margaret and Philip Isely started Natural Grocers with $200 and a dream to make healthy living attainable for everyone. Now this family legacy is evolving with Natural Grocers Brand supplements, bringing you premium quality products at Always Affordable prices.

GMP Good Manufacturing Practice

Product Details

UPC / SKU 8 49327 00301 7
DSLD Entry Date 2021-10-22
Product Type Non-Nutrient/Non-Botanical
Form Capsule
DSLD ID 256742
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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