Alpha Lipoic Acid

Best for

Ease nerve pain and sensitivity

Large effect, needs confirmation · 600–1800 mg/day for 9–16 weeks · 1 meta-analysis , n=676

49 papers · 8 claims · 114 outcomes scored · 7 positive

Outcomes

What alpha lipoic acid actually does, by outcome

Each row is one outcome with effect size, evidence base, the dose that worked in trials, and time to first effect. Magnitude tiers come from native-unit MCID where available, Cohen's d otherwise.

Outcome Effect size Evidence Dose Weeks Rank

Ease nerve pain and sensitivity Large effect, needs confirmation

Overactive nerves calm down so ordinary touch stops feeling threatening.

3 meta-analyses n=676 600–1800 mg 9–16 wk #3/5

26345602·32296475·37933068

large

3 meta-analyses n=676 Meta-analyzed I²=92%

600–1800 mg

9–16 wk

#3 /5

Improve insulin sensitivity Faint early signal

Your cells respond to insulin again so your pancreas works less hard.

4 meta-analyses n=499 300–1800 mg 8–15 wk

32256955·38044616·40180416·29721235

small

4 meta-analyses n=499 Meta-analyzed I²=96%

300–1800 mg

8–15 wk

—

Flatten post-meal blood sugar spikes Faint early signal

Blunts the glucose surge after eating so energy stays level.

1 RCT n=51 600 mg 12 wk

39641383

small

1 RCT n=51

600 mg

12 wk

—

Ease neuropathy pain and numbness Barely detectable

Less burning, tingling, and numbness in your hands and feet.

6 meta-analyses n=4.6k 600–1800 mg 4–208 wk #7/7

26345602·37933068·38205823·41181607 +2 more

trivial

6 meta-analyses n=4.6k Meta-analyzed I²=81%

600–1800 mg

4–208 wk

#7 /7

Steady your blood sugar levels Likely real but unnoticeable

Keeps fasting glucose and your three-month average in a healthier range.

13 meta-analyses n=2.0k 100–1800 mg 4–26 wk

21187189·22107734·24116330·29127425 +9 more

trivial

13 meta-analyses n=2.0k Meta-analyzed I²=94%

100–1800 mg

4–26 wk

—

Ease diabetic nerve damage Likely real but unnoticeable

Less pain, numbness, and weakness in your hands and feet.

3 meta-analyses n=1.5k 600–1800 mg 26–208 wk #2/4

21775755·37630823·38205823

trivial

3 meta-analyses n=1.5k Meta-analyzed

600–1800 mg

26–208 wk

#2 /4

Ease diabetic nerve damage symptoms Likely real but unnoticeable

Feeling stays in your feet and hands instead of fading to numbness.

3 meta-analyses n=1.5k 600–1800 mg 26–208 wk #2/4

21775755·37630823·38205823

trivial

3 meta-analyses n=1.5k Meta-analyzed

600–1800 mg

26–208 wk

#2 /4

Reduce oxidative cell damage Not enough research

Less oxidative damage to your cell membranes, proteins, and DNA.

7 RCTs n=209 100–1200 mg 3–26 wk

29127425·31285784·32373498·33426413 +3 more

—

7 RCTs n=209

100–1200 mg

3–26 wk

—

Outcome	Effect	Evidence	Dose	Weeks	Rank
Ease nerve pain and sensitivity Large effect, needs confirmation	large	3 meta-analyses n=676 Meta-analyzed	600–1800 mg	9–16 wk	#3/5
Improve insulin sensitivity Faint early signal	small	4 meta-analyses n=499 Meta-analyzed	300–1800 mg	8–15 wk	—
Flatten post-meal blood sugar spikes Faint early signal	small	1 RCT n=51	600 mg	12 wk	—
Ease neuropathy pain and numbness Barely detectable	trivial	6 meta-analyses n=4.6k Meta-analyzed	600–1800 mg	4–208 wk	#7/7
Steady your blood sugar levels Likely real but unnoticeable	trivial	13 meta-analyses n=2.0k Meta-analyzed	100–1800 mg	4–26 wk	—
Ease diabetic nerve damage Likely real but unnoticeable	trivial	3 meta-analyses n=1.5k Meta-analyzed	600–1800 mg	26–208 wk	#2/4
Ease diabetic nerve damage symptoms Likely real but unnoticeable	trivial	3 meta-analyses n=1.5k Meta-analyzed	600–1800 mg	26–208 wk	#2/4
Reduce oxidative cell damage Not enough research		7 RCTs n=209	100–1200 mg	3–26 wk	—

Buy well

Recommended Alpha Lipoic Acid products

Real products that dose Alpha Lipoic Acid where the research does, in a clean formulation, from brands we've audited. We only list ones we'd stand behind.

Chosen for adequate Alpha Lipoic Acid dosing vs. the studied range, a clean formulation (grade A–C), and independent brand-quality audits. Not sponsored.

Risk profile

Adverse events and known drug interactions

Safety events

serious adverse events (any) severe

renal failure severe

glomerulonephritis / proteinuria severe

Gastric cancer (severe adverse event) severe

Duodenitis (severe adverse event, placebo group) severe

Injury of cartilage (severe adverse event, placebo group) severe

Hypoglycaemia severe

serious adverse events (various; judged unrelated in reports) severe

Drug interactions

Doxorubicin major increases effect

5-Fluorouracil major increases effect

Epalrestat moderate increases effect

Gliclazide moderate additive

Cyclosporine moderate decreases effect

Antipsychotics moderate additive

Cisplatin moderate decreases effect

Cyclophosphamide moderate decreases concentration

Exemestane moderate increases effect

Pregabalin moderate increases effect

Sources

Generated August 14, 2026

Alpha Lipoic Acid

What alpha lipoic acid actually does, by outcome

Recommended Alpha Lipoic Acid products

Adverse events and known drug interactions

More evidence for Alpha Lipoic Acid

From Liver Scraps to Nerve Endings: The Surprising, Complicated Journey of Alpha-Lipoic Acid

Best Supplements to Ease Neuropathy Pain and Numbness (2026)

Best Supplements to Protect Brain Tissue as You Age (2026)

Peripheral Neuropathy: evidence map across 8 supplements

Metabolic health: evidence map across 82 supplements

Barberry (Berberis spp.)

Alpha Lipoic Acid

Recommended Alpha Lipoic Acid products

More evidence for Alpha Lipoic Acid

NewFrom Liver Scraps to Nerve Endings: The Surprising, Complicated Journey of Alpha-Lipoic Acid

NewBest Supplements to Ease Neuropathy Pain and Numbness (2026)

NewBest Supplements to Protect Brain Tissue as You Age (2026)

NewPeripheral Neuropathy: evidence map across 8 supplements

NewMetabolic health: evidence map across 82 supplements

NewBarberry (Berberis spp.)

From Liver Scraps to Nerve Endings: The Surprising, Complicated Journey of Alpha-Lipoic Acid

Best Supplements to Ease Neuropathy Pain and Numbness (2026)

Best Supplements to Protect Brain Tissue as You Age (2026)

Peripheral Neuropathy: evidence map across 8 supplements

Metabolic health: evidence map across 82 supplements

Barberry (Berberis spp.)