BioStacks
Pure Encapsulations

R-Lipoic Acid

1 Capsule · 120 servings

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What it does

A combination of 2 label ingredients.

ALA

r-lipoic acidPremium

Studied for diabetic nerve symptoms, but longer-term trials suggest little or no symptom improvement.

Sodium

Form not confirmedGrade —

Supports normal fluid balance and muscle and nerve function; extra sodium is not universally beneficial.

Metabolism
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Ingredients (1)

IngredientDoseTarget/referenceForm

Nutrition

Calories, macros & sodium.

  • Sodium14 mg

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

Sodium CarbonatesBuffering Agent

Alkaline buffering agents used to adjust pH and improve stability of supplement formulations

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

On an empty stomach

On the label

As a dietary supplement, take 1 capsule, 1-2 times daily, with meals.

Labels usually say “with food” because it's gentler on the stomach, not because it absorbs better. Fasted absorbs more — start there, and switch to a light meal if it bothers you.

Price check

$100.20

$0.84 / serving

$10$20$50

Pricier than 97% of 101 ALA 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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