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R-Alpha Lipoic
Acid

Moderate study situation·7/10
A higher score indicates better study conditions, but not necessarily effectiveness.

R-Alpha Lipoic Acid is a natural antioxidant with roles in metabolism, glucose regulation, and neuroprotection.

Anti-AgingCardiovascular SupportCognitive EnhancementAntioxidantGlucose MetabolismNeuroprotectiveCholesterol ManagementWeight Management
dose range
100–300 mg
Once or twice daily, often split to improve absorption and minimize side effects.
Consumption
Take on an empty stomach (30 minutes before meals or 2 hours after) with water.
Not fat-soluble.
Best time
Morning or between meals preferred; higher doses (up to 600 mg) under supervision for neuropathy.

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Description

R-Alpha Lipoic Acid (R-ALA) is the bioactive form of alpha-lipoic acid, known for its antioxidant properties and involvement in cellular energy production. It is used to support metabolic health, antioxidant status, and may help manage diabetic neuropathy and glucose regulation.

benefits
Main effects with level of evidence
Moderate
Note on evidence

Strongest evidence for use in diabetic neuropathy and antioxidant support; other benefits require more research.

Antioxidant Support

Moderate

R-ALA reduces oxidative stress by neutralizing free radicals and regenerating other antioxidants, thus helping to protect cells from damage.

Particularly relevant for: general · those seeking to reduce oxidative stress
S1 · NIH Office of Dietary Supplements: Alpha-Lipoic AcidS3 · Healthline: Alpha-Lipoic AcidS7 · PMC Article: Clinical applications of alpha lipoic acid

Glucose Metabolism and Insulin Sensitivity

Moderate

Improves insulin sensitivity and helps regulate blood sugar levels; most studied in diabetes and metabolic syndrome contexts.

Particularly relevant for: individuals with type 2 diabetes · metabolic health-focused
S1 · NIH Office of Dietary Supplements: Alpha-Lipoic AcidS3 · Healthline: Alpha-Lipoic AcidS4 · Mount Sinai: Alpha-Lipoic AcidS7 · PMC Article: Clinical applications of alpha lipoic acid

Neuroprotection and Diabetic Neuropathy Relief

Moderate

Has clinical backing for reducing symptoms of diabetic neuropathy, such as pain or numbness.

Particularly relevant for: people with diabetic neuropathy · general neurological support
S4 · Mount Sinai: Alpha-Lipoic AcidS7 · PMC Article: Clinical applications of alpha lipoic acid

Potential Cardiovascular and Anti-Aging Benefits

Limited

Preliminary research suggests positive effects on cardiovascular health and aging, though more research is needed.

Particularly relevant for: older adults · cardiovascular risk
S3 · Healthline: Alpha-Lipoic AcidS5 · Verywell Health: Alpha-Lipoic Acid

Possible Role in Weight Management

Limited

Some evidence indicates a minor benefit for weight loss or body composition; findings are not conclusive.

Particularly relevant for: those interested in weight management
S3 · Healthline: Alpha-Lipoic AcidS5 · Verywell Health: Alpha-Lipoic Acid

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This information is for educational purposes only and does not replace medical advice.
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This website is for educational and informational purposes only and does not constitute medical advice or professional services. The information provided should not be used to diagnose or treat any health problem or disease. Persons requiring medical advice should consult a licensed physician.