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Life Extension

Acetyl-L-Carnitine 500 mg

1 Capsule × 2/day · 100 servings

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What it does

A combination of 2 label ingredients.

Carnitine

Form not confirmedGrade —

Helps transport fats for normal energy production; extra carnitine does not reliably improve exercise performance.

Vitamin C

ascorbyl palmitateBudget

Supports normal collagen production and immune function, and helps the body absorb iron from plant foods.

Energy
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Ingredients (2)

Other ingredients

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Microcrystalline CelluloseBinder

Plant-derived cellulose used as a binder and filler in supplements

Lab testing

How to take it

With food
Split into 2 doses across the day

On the label

Take one (1) capsule two to four times daily, or as recommended by a healthcare practitioner. This product is best utilized when taken on an empty stomach with water or juice in divided doses 45 minutes before breakfast and lunch.

The label says to take it on an empty stomach. What's in this one sits better with food, and you give up little by taking it that way.

Price check

$36.00

$0.36 / serving

$10$20$50

Pricier than 75% of 119 carnitine supplements

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Sources & Scoring

Nutrient data (RDA, UL, and safety thresholds) sourced from the NIH Office of Dietary Supplements and the 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. studied 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.

Not medical advice. Consult your healthcare professional.

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