What does the evidence show about Alpha-lipoic acid (ALA)'s effects?

Read Off Label rates the evidence for Alpha-lipoic acid (ALA) as Moderate and the benefit magnitude as med, producing an overall grade of B+ (7.1/10). IV form (600 mg) standard in Germany for diabetic neuropathy (ALADIN trials).

What safety findings are reported for Alpha-lipoic acid (ALA)?

Alpha-lipoic acid (ALA) has a low risk profile in the database. Low (rare hypoglycemia, thiamine depletion with chronic use) Legal status: OTC.

What doses or routes are reported for Alpha-lipoic acid (ALA)?

300-1800 mg/day PO (R-enantiomer more bioavailable); empty stomach This is context from studies, approved labeling, clinical practice, or documented use; it is not individualized guidance and does not establish safety.

Rankings / Mitochondria & Cellular Energy

Alpha-lipoic acid (ALA)

Mitochondria & Cellular Energy · Antioxidant / mitochondrial

Tier B+

Reviewed by Read Off Label · Last reviewed Jul 1, 2026 · How we grade

chelatormitochondrialvitaminantioxidantglutathioneotc

7.1 / 10

Tier B+

Ev 6 Bn 5 Sf 9

Bottom line

Read Off Label grades Alpha-lipoic acid (ALA) as B+ (7.1/10) based on moderate evidence, med benefit magnitude, and a low-risk safety profile.

IV form (600 mg) standard in Germany for diabetic neuropathy (ALADIN trials).

Studied, labeled, or reported-use context: 300-1800 mg/day PO (R-enantiomer more bioavailable); empty stomach — OTC; not individualized guidance.

What the evidence says

IV form (600 mg) standard in Germany for diabetic neuropathy (ALADIN trials). Oral R-ALA more bioavailable than racemic. Chelation can contribute to thiamine depletion during chronic exposure; supplementation and cycling appear in consumer protocols without comparative outcome evidence.

Mechanism

Both fat- and water-soluble antioxidant; regenerates glutathione, vitamin C/E; essential cofactor for pyruvate/alpha-KG dehydrogenase; heavy metal chelator

Studied, labeled, or reported dose & route

300-1800 mg/day PO (R-enantiomer more bioavailable); empty stomach

This records doses and routes described in studies, approved labeling, clinical practice, or documented use. It is not individualized guidance and does not establish safety; context changes with indication, formulation, health history, monitoring, and other medicines.

Citations

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Common questions

What does the evidence show about Alpha-lipoic acid (ALA)'s effects?: Read Off Label rates the evidence for Alpha-lipoic acid (ALA) as Moderate and the benefit magnitude as med, producing an overall grade of B+ (7.1/10). IV form (600 mg) standard in Germany for diabetic neuropathy (ALADIN trials).
What safety findings are reported for Alpha-lipoic acid (ALA)?: Alpha-lipoic acid (ALA) has a low risk profile in the database. Low (rare hypoglycemia, thiamine depletion with chronic use) Legal status: OTC.
What doses or routes are reported for Alpha-lipoic acid (ALA)?: 300-1800 mg/day PO (R-enantiomer more bioavailable); empty stomach This is context from studies, approved labeling, clinical practice, or documented use; it is not individualized guidance and does not establish safety.
How does Alpha-lipoic acid (ALA) work?: Both fat- and water-soluble antioxidant; regenerates glutathione, vitamin C/E; essential cofactor for pyruvate/alpha-KG dehydrogenase; heavy metal chelator

This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.