BioStacks
Pure Encapsulations

Acetyl-L-Carnitine 250 mg

1 Capsule · 60 servings

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What it does

Carnitine

Form not confirmedGrade —

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

Energy
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Ingredients (1)

Other ingredients

Ascorbyl PalmitateAntioxidant

Fat-soluble form of vitamin C used as preservative

Hypoallergenic Plant FiberFiller

Plant-derived cellulose fiber used as a hypoallergenic filler, common in Thorne and Pure Encapsulations products

Capsule ShellCapsule

Generic capsule shell where the label does not specify the material. Common materials are hypromellose (HPMC) for vegetarian capsules and gelatin for traditional capsules — both are GRAS-listed and safe. Fish gelatin and pullulan variants also exist.

Lab testing

How to take it

With food

On the label

As a dietary supplement, take 1-4 capsules daily, between meals.

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

$41.80

$0.70 / serving

$10$20$50

Pricier than 80% 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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