BioStacks
Carlyle

Acetyl L-Carnitine HCL 500mg

1 Capsule · 180 servings · $0.08/serving

iHerbAmazon

Best for

Energy

Ingredients (1)

Acetyl L-Carnitine HCL

100%

Dose

500 mg

Target

500–2000 mg

Form

—

Other Ingredients (5)

Rice FlourFiller

Rice-based ingredients carry risk of inorganic arsenic contamination (FDA and Consumer Reports). Rice accumulates arsenic from soil at higher rates than other grains. Used as a cheap filler — adds nothing beneficial.

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Magnesium StearateLubricant

A salt of stearic acid used as a lubricant in tablet and capsule production

Calcium SilicateAnti-caking

Inorganic compound used as an anti-caking and flow agent in powdered supplements

GelatinCapsule

Protein derived from collagen, used in traditional capsule shells

How to Take It

Take it anytime

Absorption is modest either way; taking it with carbohydrate-containing meals improves uptake.

With food

On the label

Take 1 quick release capsule daily, preferably on an emptu stomach.

General guidance based on the ingredients, not a substitute for the label or your doctor.

Price Check

$15.28

$10$20$50$100

Cheaper than 84% of 106 carnitine supplements

Track this supplement in your stack

Get personalized insights, interactions, and coverage recommendations.

Get Started Free

Similar Supplements

Products that cover similar health dimensions based on their ingredients.

Acetyl L-Carnitine 1000mg

Best Naturals

Acetyl L-Carnitine 1000mg

⚡ for Energy

100
L-Carnitine 1000 mg

GNC

L-Carnitine 1000 mg

⚡ for Energy

100
L-Carnitine 500 mg Tablets

Solgar

L-Carnitine 500 mg Tablets

⚡ for Energy

100
Acetyl L-Carnitine

Vital Nutrients

Acetyl L-Carnitine

⚡ for Energy

100
Acetyl-L-Carnitine 750 mg

NOW

Acetyl-L-Carnitine 750 mg

⚡ for Energy

97

Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from: NIH Office of Dietary Supplements and National Academies Dietary Reference Intakes (DRI).

This is not medical advice. Consult a healthcare provider before making changes to your supplement routine.

The score analyzes what's on the label: ingredient doses vs. clinical ranges, chemical forms, evidence levels, and known interactions. It does not verify label accuracy or test for contaminants — for that, look for third-party certifications like USP or NSF.

BioStacks

Know exactly what's in your supplements.

Navigate

  • Home
  • App Store
  • Google Play

Resources

  • Contact & Support
  • Pricing
  • Terms of Service
  • Privacy Policy
  • Refund Policy

Explore

  • Health Areas
  • Best Supplements
  • Nutrients
  • All Supplements

Popular Picks

  • Best Magnesium for Sleep
  • Best Collagen for Skin
  • Best Creatine for Muscle
  • Best Vitamin D for Bone Health
  • Best Probiotics for Digestion
  • Best CoQ10 for Heart
© 2026 BioStacks. All rights reserved. Not medical advice.