BioStacks
Source Naturals

R-Lipoic Acid 100 mg

1 Tablet · 30 servings · $0.52/serving

iHerbAmazon

Best for

Metabolism

Ingredients (1)

R-Lipoic Acid

33%

Dose

100 mg

Target

300–600 mg

Form

Premium

Other Ingredients (5)

SorbitolSweetener

A FODMAP sugar alcohol that may trigger GI discomfort (bloating, gas) in individuals with IBS or sorbitol malabsorption, even at small amounts found in supplements. Avoided in low-FODMAP diets.

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

Silicon DioxideAnti-caking

Fine silica powder used to prevent clumping

Microcrystalline CelluloseBinder

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

How to Take It

Take it anytime

Absorbs substantially better fasted — take it about 30 minutes before a meal.

On an empty stomach

On the label

1 tablet daily, preferably 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.

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

Price Check

$15.70

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Cheaper than 69% of 101 ALA supplements

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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.

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