Alpha-Lipoic Acid (ALA)

Universal antioxidant that supports blood sugar control, nerve health, and cellular energy production

Scientific nameAlpha-Lipoic Acid FormulaC8H14O2S2 Molecular weight206.33 g/mol CAS1077-28-7

80 absorption score

8 safety / 10

30 USD per month

5 documented interactions

Check it against something

Evidence level A

Alpha-Lipoic Acid (ALA) with:

76 out of 100

Needs attention Separate by 2-4 hours to avoid the interaction below.

Check it against your whole stack →

What it does

mechanism and evidence for each claim

Improved blood sugar control

Enhances glucose uptake and insulin sensitivity

Increases glucose transporter activity and improves insulin signaling Evidence A-grade 2-8 weeks

Neuroprotection and nerve health

Protects nerves and may reduce diabetic neuropathy symptoms

Antioxidant protection reduces oxidative nerve damage Evidence A-grade 8-24 weeks

Universal antioxidant protection

Works in both water and fat-soluble environments

Neutralizes free radicals and regenerates other antioxidants Evidence A-grade 2-6 weeks

Enhanced cellular energy production

Supports mitochondrial function and energy metabolism

Essential cofactor for energy-producing enzymes Evidence B-grade 4-8 weeks

Heavy metal detoxification

Helps chelate and remove heavy metals from the body

Sulfur groups bind to heavy metals facilitating elimination Evidence B-grade 4-12 weeks

Others take these for the same thing

Same goal, different mechanism — check any of them against this one

Turmeric Anti-inflammatory & antioxidant 300-1000mg A 3% Ashwagandha Stress management & energy 300-600mg A 75% Vitamin B12 (Cyanocobalamin) Energy & nerve support 250-1000 mcg A 70% Coenzyme Q10 (CoQ10) Heart health & cellular energy 100-200mg A 10% Fish Oil (EPA/DHA) Heart & brain health 1-2g EPA/DHA A 85% Phosphorus Bone health & energy metabolism 700-1250mg A 80%

Every pair we checked

12 combinations scored by the engine

Alpha-Lipoic Acid (ALA) + Iron Sulfate ALA may chelate iron reducing availability Needs attention 58

Alpha-Lipoic Acid (ALA) + Caffeine No documented interaction either way No known interaction 70

Alpha-Lipoic Acid (ALA) + Creatine Monohydrate No documented interaction either way No known interaction 70

Alpha-Lipoic Acid (ALA) + Calcium Carbonate No documented interaction either way No known interaction 70

Alpha-Lipoic Acid (ALA) + Whey Protein No documented interaction either way No known interaction 70

Alpha-Lipoic Acid (ALA) + Lactase No documented interaction either way No known interaction 70

Alpha-Lipoic Acid (ALA) + Bovine Collagen No documented interaction either way No known interaction 70

Alpha-Lipoic Acid (ALA) + DHA No documented interaction either way No known interaction 70

Alpha-Lipoic Acid (ALA) + Vitamin B1 (Thiamine) High ALA doses may reduce thiamine absorption Needs attention 78

Alpha-Lipoic Acid (ALA) + Vitamin D3 ALA regenerates vitamin E enhancing antioxidant protection Works better together 82

Alpha-Lipoic Acid (ALA) + Chromium GTF Enhanced glucose control and insulin sensitivity Works better together 86

Alpha-Lipoic Acid (ALA) + Vitamin B7 (Biotin) Both support glucose metabolism and energy production Works better together 90

Dosage

Empty stomach

Daily200-600mg

Antioxidant support200-400mg daily

Blood sugar control300-600mg daily

Diabetic neuropathy600-1800mg daily (medical supervision)

Heavy metal detox300-600mg daily

When to expect it

First Effects2-4 weeks for blood sugar and antioxidant benefits

Peak Benefits8-16 weeks for sustained nerve health and metabolic benefits

Deficiency DevelopmentRare - body produces small amounts

Toxicity OnsetRare, mainly thiamine interference with very high doses

How to measure it

$60-150

MarkerFasting glucose, HbA1c, or oxidative stress markers

OptimalFasting glucose: <100 mg/dL, HbA1c: <5.7%

Deficient belowNot applicable for supplement

FrequencyMonthly for diabetics, every 3-6 months for others

What people actually reported to the FDA

CAERS, 90 reports naming it as the suspect

Most reported effects

Dyspnoea 8

Palpitations 7

Diarrhoea 7

Fatigue 7

Atrial fibrillation 6

Named as the suspect 90 reports of 140 that mention it at all

Serious outcome 77% hospitalisation, emergency room or worse

Other Serious or Important Medical Event65

Visited a Health Care Provider29

Hospitalization22

Reports are voluntary and unverified — they record what someone experienced while taking something, not what the compound caused. Counts skew towards products people take a lot of, and a serious outcome is more likely to be reported than a mild one, so these are not rates. How we filter them →

What actually reaches you

The label counts the carrier, your body does not

Absorption Very high 80 of 100 · best absorbed form of this compound

Delivered daily 320 mg

Cost per 100 mg delivered $0.31 comparative — uses the absorption score, not a measured percentage

Works better with

3 documented

Biotin

Both support glucose metabolism and energy production

Complementary roles in energy metabolism pathways · level B

Vitamin E

ALA regenerates vitamin E enhancing antioxidant protection

ALA recycles oxidized vitamin E back to active form · level A

Chromium

Enhanced glucose control and insulin sensitivity

Complementary effects on glucose metabolism · level B

What not to take with Alpha-Lipoic Acid (ALA)

2 documented

Thiamine B1

High ALA doses may reduce thiamine absorption

Competes for cellular uptake mechanisms · moderate with high doses significance

Iron Excess

ALA may chelate iron reducing availability

Metal chelation properties affect iron absorption · mild significance

Medication interactions

Discuss these with a pharmacist before combining

diabetes-medications Major

May enhance blood sugar lowering effects

What to do: Monitor blood glucose closely, may need dose adjustments

thyroid-medications Minor

May interfere with thyroid hormone absorption

What to do: Space doses apart

chemotherapy-drugs Moderate

Antioxidant effects may interfere with some treatments

What to do: Discuss with oncologist

Available forms

bioavailability compared

R-Alpha-Lipoic Acid (Natural Form) 85

R-Alpha-Lipoic Acid (Natural Form): Natural form, Better absorption, Blood sugar control, Nerve protection

Food sources

before you supplement

Red meat (especially organ meats) 1-3mg per 100g · 70

Spinach and broccoli 0.1-0.5mg per 100g · 60

Yeast and potatoes 0.1-1mg per 100g · 65

Supplements (R-ALA) 50-600mg per dose · 85

Too little

deficiency signs

Rare as body produces small amounts:
Poor glucose control and insulin resistance
Increased oxidative stress and cellular damage
Nerve pain and neuropathy progression
Reduced cellular energy production
Poor heavy metal detoxification
Accelerated aging and cellular dysfunction

Too much

toxicity signs

Generally safe but potential concerns:
Hypoglycemia with diabetes medications
Thiamine deficiency with very high doses
Digestive upset and nausea
Rare skin rash or allergic reactions

Who benefits most

diabetes-blood-sugar-control

Excellent for improving glucose control and insulin sensitivity

300-600mg daily

diabetic-neuropathy

May reduce nerve pain and protect against nerve damage

600-1800mg daily (medical supervision)

antioxidant-support

Provides universal antioxidant protection and regenerates other antioxidants

200-400mg daily

heavy-metal-detox

Helps chelate and remove heavy metals from the body

300-600mg daily

aging-cellular-protection

Supports cellular energy and protects against age-related damage

200-400mg daily

Where to buy it

compare forms first

Look for Alpha-Lipoic Acid (ALA) at 200-600mg per serving. The form that matters here is R-Alpha-Lipoic Acid (Natural Form).

Find on Amazon

Affiliate link — we may earn a commission at no cost to you.

How it works

Essential cofactor for mitochondrial energy-producing enzymes
Increases glucose transporter (GLUT4) activity and insulin sensitivity
Neutralizes free radicals in both aqueous and lipid environments
Regenerates oxidized antioxidants including vitamins C and E
Chelates heavy metals through sulfur-containing groups
Protects nerve cells from oxidative damage and inflammation

Key findings

what the evidence supports

Strong evidence for blood sugar control and insulin sensitivity
Effective for diabetic neuropathy and nerve protection
Powerful universal antioxidant with excellent safety profile
Requires monitoring with diabetes medications due to hypoglycemia risk

Sources: NIH Examine.com · data reviewed 2026-08-02

Compiled by Denis, who maintains this database and holds no medical qualification — every figure here is sourced or derived, never asserted. How we calculate it →

Common questions

What are the benefits of Alpha-Lipoic Acid (ALA)?

Documented effects: Improved blood sugar control; Neuroprotection and nerve health; Universal antioxidant protection; Enhanced cellular energy production. Enhances glucose uptake and insulin sensitivity

How much Alpha-Lipoic Acid (ALA) should you take per day?

The common daily range is 200-600mg. By goal — antioxidant support: 200-400mg daily; blood sugar control: 300-600mg daily; diabetic neuropathy: 600-1800mg daily (medical supervision); heavy metal detox: 300-600mg daily.

When is the best time to take Alpha-Lipoic Acid (ALA)?

Empty stomach. First effects are typically reported within 2-4 weeks for blood sugar and antioxidant benefits.

What are the side effects of Alpha-Lipoic Acid (ALA)?

At excessive doses: Generally safe but potential concerns:, Hypoglycemia with diabetes medications, Thiamine deficiency with very high doses, Digestive upset and nausea, Rare skin rash or allergic reactions. Safety rating at normal doses is 8 out of 10.

What should you not take with Alpha-Lipoic Acid (ALA)?

Separate it from Thiamine B1, Iron Excess by two to four hours. High ALA doses may reduce thiamine absorption

Does Alpha-Lipoic Acid (ALA) interact with medications?

Documented interactions with diabetes-medications, thyroid-medications, chemotherapy-drugs. Discuss these with a pharmacist before combining.

How do you know if you need Alpha-Lipoic Acid (ALA)?

The marker is Fasting glucose, HbA1c, or oxidative stress markers, optimal range Fasting glucose: <100 mg/dL, HbA1c: <5.7%. Common deficiency signs: Rare as body produces small amounts:, Poor glucose control and insulin resistance, Increased oxidative stress and cellular damage, Nerve pain and neuropathy progression.

Taken for

52 Brain & Focus

Caffeine · DHA · Fish Oil (EPA/DHA)

62 Energy & Metabolism

Vitamin B12 (Methylcobalamin) · Ashwagandha · Vitamin B12 (Cyanocobalamin)

49 Liver & Detox

Turmeric · Vitamin C (Ascorbic Acid) · D-Mannose