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Alpha Lipoic Acid (ALA / R-ALA)
Universal antioxidant that works in both water and fat, supporting blood sugar control, nerve health, and cellular energy.
What the evidence says
Alpha Lipoic Acid appears to help in 13 of 14 studies with measurable effects — the evidence leans clearly favourable.
Most evidence is from high-quality meta-analyses and randomised trials published 1999–2026 with a typical study size of 128 participants.
Based on 78 studies · 30 meta-analyses · 17 RCTs · 893,277 total participants
Confidence
HighWhat the studies found
By outcome
See full supplement plans that include Alpha Lipoic Acid.
Alpha Lipoic Acid has an evidence score of 9/10 — very strong evidence based on 56 indexed studies, including 22 meta-analyses. Universal antioxidant that works in both water and fat, supporting blood sugar control, nerve health, and cellular energy.
The commonly studied dose of Alpha Lipoic Acid is 300-600mg. Research points to an estimated optimal dose around 600mg, with a minimum effective dose near 300mg. Individual response varies — start low and adjust.
The best time to take Alpha Lipoic Acid is between meals. It can be taken on an empty stomach. ALA competes with biotin and other nutrients for intestinal absorption via the sodium-dependent multivitamin transporter (SMVT).
Berberine
Likely helpsActivates AMPK to regulate blood sugar, improve insulin sensitivity, and support lipid metabolism — comparable to metformin in some trials.
Nicotinamide Riboside
Likely helpsA vitamin B3 precursor that efficiently raises cellular NAD+ levels, supporting energy metabolism, mitochondrial function, and healthy aging.
Last reviewed May 2026 · evidence from 38 studies · how we score
This information is for educational purposes only. It is not a substitute for professional medical advice. Always consult a qualified healthcare provider before starting, stopping, or changing any supplement or medication.
Alpha Lipoic Acid is a unique antioxidant that's both water and fat-soluble, allowing it to work throughout the body. It's produced naturally but levels decline with age. Research shows benefits for blood sugar regulation, diabetic neuropathy, and as a general antioxidant. Also regenerates other antioxidants like vitamins C and E.
Works in both water and fat environments
Enhances insulin sensitivity
Essential for cellular energy production
How Alpha Lipoic Acid works — from molecular targets to health outcomes. Click an edge to see supporting research.This visualization is in beta — pathways are being refined and expanded.
300-600mg
Can be taken without food
| Form | Type |
|---|---|
| 💊R-Alpha Lipoic Acid (R-ALA) — the natural form | Recommended |
| 💊Racemic ALA (R/S mix) | Alternative |
| 💊Na-R-ALA (stabilized R-ALA) | Alternative |
R-ALA is the biologically active form. Racemic ALA contains 50% R and 50% S forms. Na-R-ALA is more stable.
Minimum: 4 weeks
Optimal: 12 weeks
Cycling: Not required
Note: Food reduces absorption. R-ALA form is more bioavailable than racemic ALA. May cause blood sugar to drop if taken with diabetes medications.
Based on multiple meta-analyses showing dose-related trends for TSS improvement. 600mg/day most studied dose with significant benefit vs placebo in 73% of studies. Limited data on doses above 600mg.
Improved glucose metabolism
May reduce neuropathy symptoms
Reduced oxidative stress
Insufficient data; avoid
Beneficial but requires monitoring; may need medication adjustment
May enhance blood sugar lowering — monitor closely
May affect thyroid hormone levels
May interact; consult oncologist
Tip: Take with small amount of food
Tip: Discontinue if occurs
Tip: Monitor blood sugar if diabetic
Classic mitochondrial support combination
Synergistic neuroprotection and energy production
ALA may deplete B vitamins; B1 is especially important
Prevents potential B vitamin depletion
Both support nerve health in diabetes
Enhanced neuropathy protection
Both support anti-glycation and antioxidant defenses
Enhanced protection against oxidative and glycation damage
Both enhance insulin sensitivity
Enhanced blood sugar control
Both support liver antioxidant capacity
Enhanced liver protection
Both support nerve health and glucose metabolism
Enhanced neuropathy protection
Alpha-lipoic acid is a mitochondrial cofactor that regenerates antioxidants and supports the Krebs cycle; combined with NR's NAD+ elevation provides broader mitochondrial support.
Enhanced mitochondrial function through NAD+ elevation and improved redox cycling
Alpha Lipoic Acid is generally safe at recommended doses, with a few precautions worth noting. The most commonly reported side effects are nausea, skin rash, hypoglycemia. Use caution if any of these apply to you: Thiamine (B1) deficiency; Excessive alcohol use; Uncontrolled Diabetes - use with caution.
CoQ10
Likely helpsEnhances mitochondrial energy production and acts as a lipid-soluble antioxidant — critical for heart health and depleted by statins.
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