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Alpha-Lipoic Acid

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Alpha-Lipoic Acid. Mitochondrial antioxidant studied for diabetic neuropathy and insulin sensitivity.

How it works. Cofactor for pyruvate and α-KG dehydrogenase; regenerates other antioxidants; activates AMPK.

What the research supports. 1 graded claims. Strongest: Reduces diabetic neuropathy symptoms (600 mg/d) (strong).

How much to take. Typical dose: 300–600 mg R-ALA or 600–1800 mg racemic.

Side effects and interactions. 2 medication interactions listed. Serious: Insulin autoimmune syndrome (rare).

Stacking. Pairs well with NAD+ precursor (NMN or NR), Omega-3.

Forms. 1 forms. Pick one to open its profile.

Key studies. 8 studies cited. The strongest are listed with links to PubMed.

Community. Experiences from people who have tried Alpha-Lipoic Acid. Anecdotes are not medical advice.

Alpha-Lipoic Acid. Mitochondrial antioxidant studied for diabetic neuropathy and insulin sensitivity.

Molecular structureC8H14O2S2 · 206.3 g/mol

What it is

Mitochondrial antioxidant studied for diabetic neuropathy and insulin sensitivity.

Also called

ALAR-ALA

Food sources

Trace in red meat, organ meats

Goals

Blood Sugar ManagementHealthy Aging

How it works

Cofactor for pyruvate and α-KG dehydrogenase; regenerates other antioxidants; activates AMPK.

Pathways

  • AMPK activation
  • Antioxidant recycling

Effects

  • ↓Fasting glucose decreases
  • ↓Diabetic neuropathy symptoms decreases

What the research supports

Reduces diabetic neuropathy symptoms (600 mg/d)strong

Strong: consistent results across large trials or meta-analyses. Moderate: several trials, mostly positive. Limited: small or mixed studies. Preclinical: animal or cell research only.

Typical dose
300–600 mg R-ALA or 600–1800 mg racemic
TimingConsistent daily timing recommended; split larger doses if GI tolerance is a concern.
With foodWith a meal containing fat for fat-soluble compounds; otherwise either.
Best formMost evidence is based on the racemic ala form.
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Side effects & interactions

Common side effects

  • Nausea

Serious

  • Insulin autoimmune syndrome (rare)

Medication interactions

Insulin / sulfonylureasmoderate

Hypoglycemia risk.

Thyroid hormoneminor

May reduce conversion.

Check any supplement–medication combination with your pharmacist before starting.

Combines with

Pairs well

  • NAD+ precursor (NMN or NR)Complementary mitochondrial and sirtuin support.
  • Omega-3Lowers inflammation and supports membrane integrity.

Key studies

8 studies cited in total.

PubMed: Alpha-Lipoic Acid — Reduces diabetic neuropathy symptoms ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Alpha-Lipoic Acid and "Reduces diabetic neuropathy symptoms". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Alpha-Lipoic Acid — randomized controlled trial ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Alpha-Lipoic Acid and "randomized controlled trial". Filter by RCT, meta-analysis, or year on the results page.

PubMed: Alpha-Lipoic Acid — meta-analysis ↗
Systematic review · PubMed (NLM) · 2026

Opens current human and preclinical literature matching Alpha-Lipoic Acid and "meta-analysis". Filter by RCT, meta-analysis, or year on the results page.

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