Meta-analysis availableHuman trial evidenceTraditional useInteraction riskNeeds more research
A potent antioxidant studied for diabetic neuropathy and insulin sensitivity.
Alpha-lipoic acid (ALA) is a sulfur-containing fatty acid that functions as both a water- and fat-soluble antioxidant. Well-studied for diabetic peripheral neuropathy.
Quick answer
What it is: Alpha-lipoic acid (ALA) is a sulfur-containing fatty acid that functions as both a water- and fat-soluble antioxidant.
The B evidence grade is supported by a number of human clinical trials, including randomized controlled trials and meta-analyses, particularly for its studied applications in nerve health and blood sugar management. While evidence suggests benefits in certain areas, the overall strength and consistency across all potential applications vary.
Last reviewed · Jun 2026
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Commonly Combined With
Other remedies frequently used alongside this one — from curated relationships, community reports, and shared protocols.
Community signal breakdown
Where this remedy is being discussed across the web and community.
A classical ketogenic diet typically provides ~70–80% of calories from fat, ~15–20% from protein, and only ~5–10% (often 20–50 g/day) from carbohydrates. The metabolic shift to ketosis lowers blood glucose and insulin, raises ketone bodies (beta-hydroxybutyrate, acetoacetate), and is being studied for neurological and metabolic conditions. Variants include the Modified Atkins Diet (MAD), Medium-Chain Triglyceride (MCT) ketogenic diet, and the Low Glycemic Index Treatment (LGIT).
Foods to emphasize
Fatty fish (salmon, sardines, mackerel)
Pasture-raised eggs
Avocado and olives
Extra-virgin olive oil, coconut oil, MCT oil
Grass-fed meat and poultry
Full-fat dairy (butter, ghee, hard cheeses)
Nuts and seeds (macadamia, pecan, walnut, chia, flax)
Low-carb leafy greens and cruciferous vegetables
Bone broth and electrolyte-rich foods
Foods to avoid
Sugar and sweetened beverages
Grains and starches (bread, pasta, rice, cereal)
Most fruit (except small portions of berries)
Legumes and beans
Starchy vegetables (potatoes, corn, peas)
Low-fat or sweetened dairy
Vegetable seed oils (soybean, corn, sunflower) in excess
Most processed and packaged foods
Key principles
Carbohydrate intake usually 20–50 g net carbs per day
Adequate protein (~1.2–1.7 g/kg) — not high-protein
Most calories from whole-food fats
Track electrolytes (sodium, potassium, magnesium) to prevent "keto flu"
Best initiated with clinician guidance if on medications for diabetes, blood pressure, or seizures
Typical duration: Often 3–6 months minimum to assess response; medically supervised protocols (e.g. for epilepsy) may be maintained for years.
Why it may help
Multiple Sclerosis (MS): Small trials and pilot studies suggest ketogenic and modified Atkins diets may reduce fatigue, improve quality of life, and lower inflammatory markers in relapsing MS. Used as an adjunct, not a replacement for disease-modifying therapy.
Insulin Resistance: Most direct mechanism — lowers insulin demand by minimizing carbohydrate load.
Type 2 Diabetes: Significant HbA1c and fasting glucose reductions in clinical trials. Monitor diabetes medications closely to avoid hypoglycemia.
Prediabetes: Rapid improvements in fasting glucose and HbA1c, often reversing prediabetes within months.
Ketogenic therapy is a medical intervention when used for seizure disorders or oncology — work with a clinician or registered dietitian experienced in ketogenic therapy. Not recommended in pregnancy, type 1 diabetes without supervision, pancreatitis, certain fatty-acid oxidation disorders, or active eating disorders.
Anti-Inflammatory Diet
A whole-foods pattern designed to lower chronic, low-grade inflammation by emphasizing omega-3s, polyphenols, fiber, and minimizing ultra-processed foods, sugar, and seed oils.
The anti-inflammatory diet is not a single protocol but a synthesis of the patterns most consistently linked to lower inflammatory markers (CRP, IL-6, TNF-alpha) in human studies — Mediterranean-style eating, oily fish, abundant polyphenols, and low intake of ultra-processed foods, refined sugar, industrial seed oils, and excessive alcohol.
Foods to emphasize
Fatty fish 2–3x/week (salmon, sardines, mackerel, herring)
Extra-virgin olive oil
Berries, cherries, and other deeply colored fruit
Dark leafy greens and cruciferous vegetables
Turmeric, ginger, and culinary herbs
Green tea
Nuts (especially walnuts) and seeds (flax, chia)
Legumes and whole grains
Dark chocolate (≥70% cocoa) in moderation
Foods to avoid
Sugar-sweetened beverages and refined sugar
Ultra-processed snacks and ready meals
Industrial seed oils used at high heat (soybean, corn, sunflower, cottonseed)
Processed and cured meats
Refined flour products
Excess alcohol
Key principles
Cook with olive oil, finish with extra-virgin olive oil
Aim for 25–35 g of fiber per day from whole foods
Eat the rainbow — color diversity ~ polyphenol diversity
Limit added sugar to <25 g/day
Typical duration: A long-term eating pattern.
Why it may help
Multiple Sclerosis (MS): Lowering systemic inflammation is a plausible adjunct to disease-modifying therapy; aligns with Mediterranean-derived MS data.
Insulin Resistance: Reduces chronic low-grade inflammation that impairs insulin signaling.
Prediabetes: Lowers inflammatory markers linked to insulin resistance and metabolic progression.
Type 2 Diabetes: Reduces systemic inflammation that drives insulin resistance and beta-cell dysfunction.
Safe and flexible. Can be combined with Mediterranean, vegetarian, or plant-forward patterns.
Autoimmune Protocol (AIP)
A strict elimination version of paleo designed to calm autoimmune flares and identify food triggers through structured reintroduction.
The Autoimmune Protocol removes foods commonly implicated in immune activation and gut permeability — grains, legumes, dairy, eggs, nightshade vegetables, nuts, seeds, refined sugar, alcohol, and additives — for a 30–90 day elimination, followed by careful one-at-a-time reintroduction. It is most studied in Hashimoto's thyroiditis and inflammatory bowel disease.
Foods to emphasize
Quality meat, poultry, and seafood (especially wild-caught fatty fish)
Organ meats once or twice weekly
A wide variety of non-nightshade vegetables and leafy greens
Nuts and seeds (including seed-based spices like cumin, coriander)
Refined sugar and sweeteners
Alcohol
NSAIDs and food additives where possible
Key principles
Pair the elimination with sleep, stress management, and movement
Track symptoms in a journal during reintroductions
Reintroduce one food every 5–7 days and watch for symptom changes
Most people do NOT need to stay strict long-term — the goal is a personalized maintenance diet
Typical duration: 30–90 day strict elimination, then a structured staged reintroduction over weeks to months.
Why it may help
Multiple Sclerosis (MS): Used clinically as an aggressive anti-inflammatory elimination; evidence overlaps with Wahls-style and paleo trials showing reduced fatigue in MS.
AIP is restrictive and best done with a practitioner familiar with the protocol, especially when active autoimmune disease is involved or in pregnancy/lactation.
Vegan Diet
A fully plant-based eating pattern that excludes all animal products — meat, fish, dairy, eggs, and honey.
A whole-food vegan diet emphasizes vegetables, fruit, legumes, whole grains, nuts, and seeds. It has been associated with improvements in body weight, blood lipids, and glycemic control, and is being studied for autoimmune and inflammatory conditions. It requires deliberate planning for vitamin B12, vitamin D, omega-3 (EPA/DHA), iodine, iron, zinc, and (sometimes) calcium.
Nuts and seeds (especially walnuts, chia, flax, hemp)
Fortified plant milks and nutritional yeast
Algae-based EPA/DHA supplement
Vitamin B12 supplement (non-negotiable)
Foods to avoid
Refined grains and sugar as the bulk of meals
Heavily processed vegan junk foods
Coconut and palm oils in excess
Key principles
B12 supplementation is required, not optional
Include a reliable iodine source (iodized salt or seaweed in moderation)
Get vitamin D from sun and/or a supplement
Combine grains and legumes across the day for complete protein
Choose calcium-fortified plant milk if not eating leafy greens daily
Typical duration: A long-term eating pattern.
Why it may help
Multiple Sclerosis (MS): Small trials (e.g. Swank-style and McDougall plant-based diets) suggest reductions in fatigue and improved quality of life in MS.
Vegan diets can be excellent or deficient — quality depends on planning. Pregnant, breastfeeding, and growing children on vegan diets should be followed by a registered dietitian.
Linked nutrient deficiencies
Vitamin and mineral deficiencies commonly associated with the conditions this remedy may support.
Vitamin D
Fat-soluble vitamin
Hormone-like vitamin central to immune function, mood, bone, and thyroid health.
Low vitamin D status is one of the most widespread deficiencies globally and has been linked to autoimmune disease activity (Hashimoto's, MS), mood disorders, recurrent infections, and poor skin barrier function.
Common symptoms
Fatigue
Low mood
Frequent infections
Bone or muscle aches
Hair thinning
Food sources
Fatty fish (salmon, sardines)
Egg yolks
Cod liver oil
UV-exposed mushrooms
Fortified dairy
Lab markers to discuss
25-hydroxyvitamin D (target 40–60 ng/mL per most functional ranges)
Reference intake: Adults 600–800 IU/day RDA; functional medicine often targets 2,000–5,000 IU/day with monitoring.
Supplementation notes: Take with a fat-containing meal. Pair with vitamin K2 (MK-7) when supplementing higher doses long-term.
Why it matters here
Multiple Sclerosis (MS): Strong epidemiologic and clinical evidence linking low vitamin D to MS risk and relapse rates.
Vitamin B12 (Cobalamin)
B-vitamin
Essential for nerve myelination, red blood cell formation, and methylation.
Deficiency is common in vegetarians/vegans, older adults, and those on PPIs or metformin. Strongly implicated in neurological symptoms (MS-like presentations), fatigue, anxiety, and cognitive decline.
Regenerates other antioxidants, improves insulin-mediated glucose uptake, and reduces oxidative stress in nerves.
How it works in more detail
Alpha-lipoic acid (ALA) functions as a cofactor for mitochondrial enzymes involved in energy metabolism. It appears to possess antioxidant properties, directly scavenging reactive oxygen species and regenerating other antioxidants like vitamins C and E, and glutathione. ALA also appears to modulate inflammatory pathways, potentially by inhibiting NF-κB activation. In some contexts, it may improve insulin sensitivity by facilitating glucose uptake in certain cells. Research regarding these mechanisms is ongoing and includes both preclinical and human studies.
How to use
Always consult a qualified clinician.
Editorial guidance
Suggested dosage
300–600 mg/day on empty stomach
Research dosage range
300–1800 mg/day
Typical onset
Effects of alpha-lipoic acid may not be immediate; consistent daily use over several weeks or months is typically reported in studies before potential benefits, such as improvements in nerve comfort or blood sugar parameters, are observed.
Typical forms
capsule, tablet
Quality markers
When selecting an alpha-lipoic acid supplement, look for products that specify the form (e.g., R-lipoic acid, racemic ALA). Third-party testing for purity and potency can help ensure the product meets label claims and is free from contaminants. Reputable manufacturers often provide certificates of analysis.
Anticoagulants (potential for increased bleeding risk, theoretical)
Avoid if
Hypoglycemia (without medical supervision)
Thyroid disorders (without medical supervision)
Known allergy to alpha-lipoic acid
Community tips
No community tips yet — be the first to share what worked for you.
Suggested dosage
300–600 mg/day on empty stomach
General guidance — discuss specifics with a clinician.
Active medicinal compounds
Alpha-lipoic acid (ALA), specifically the R-lipoic acid isomer, which is the biologically active form.
Traditional use
Alpha-lipoic acid itself is not a traditional herbal remedy. It is a compound naturally occurring in the body and certain foods, identified relatively recently and primarily studied in modern biochemical and pharmacological contexts.
Safety
Safety warnings
May lower blood sugar — monitor if on diabetes medication. Can deplete biotin with long-term use.
Anticoagulants (potential for increased bleeding risk, theoretical)
Reported side effects
Nausea
Stomach upset
Diarrhea
Skin rash
Dizziness
General guidance — discuss specifics with a clinician.
Evidence ecosystem
Scientific literature, clinical guidance, government sources, ongoing research, traditional use, and lived experience — grouped by source type and quality.
Overall grade (D)
The B evidence grade is supported by a number of human clinical trials, including randomized controlled trials and meta-analyses, particularly for its studied applications in nerve health and blood sugar management. While evidence suggests benefits in certain areas, the overall strength and consistency across all potential applications vary.
Akbari M, Ostadmohammadi V, Tabrizi R, Mobini M, Lankarani KB, Moosazadeh M · Nutrition & metabolism · 2018
This systematic review and meta-analysis of randomized controlled trials (RCTs) was conducted to determine the effect of alpha-lipoic acid (ALA) supplementation on the inflammatory markers among patients with metabolic syndrome (MetS) and related disorders.
We searched the following databases until November 2017: PubMed, MEDLINE, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials. Three reviewers independently assessed study eligibility, extracted data, and evaluated risk of bias of included primary studies. Statistical heterogeneity was assessed using Cochran's Q test and I-square (I2) statistic. Data were pooled by using the random-effect model and standardized mean difference (SMD) was considered as the summary effect size.
Eighteen trials out of 912 potential citations were found to be eligible for our meta-analysis. The findings indicated that ALA supplementation significantly decreased C-reactive protein (CRP) (SMD = - 1.52; 95% CI,
Meta-AnalysisPubMedVery High Quality
Observational Studies(6)
Cohort, case-control, and cross-sectional human studies.
Najafi N, Mehri S, Ghasemzadeh Rahbardar M, Hosseinzadeh H · Phytotherapy research : PTR · 2022
Metabolic syndrome (MetS) is a multifactorial disease with medical conditions such as hypertension, diabetes, obesity, dyslipidemia, and insulin resistance. Alpha-lipoic acid (α-LA) possesses various pharmacological effects, including antidiabetic, antiobesity, hypotensive, and hypolipidemia actions. It exhibits reactive oxygen species scavenger properties against oxidation and age-related inflammation and refines MetS components. Also, α-LA activates the 5' adenosine monophosphate-activated protein kinase and inhibits the NFκb. It can decrease cholesterol biosynthesis, fatty acid β-oxidation, and vascular stiffness. α-LA decreases lipogenesis, cholesterol biosynthesis, low-density lipoprotein and very low-density lipoprotein levels, and atherosclerosis. Moreover, α-LA increases insulin secretion, glucose transport, and insulin sensitivity. These changes occur via PI3K/Akt activation. On the other hand, α-LA treats central obesity by increasing
Capece U, Moffa S, Improta I, Di Giuseppe G, Nista EC, Cefalo CMA · Nutrients · 2022
Alpha-lipoic acid (ALA) is a natural compound with antioxidant and pro-oxidant properties which has effects on the regulation of insulin sensitivity and insulin secretion. ALA is widely prescribed in patients with diabetic polyneuropathy due to its positive effects on nerve conduction and alleviation of symptoms. It is, moreover, also prescribed in other insulin resistance conditions such as metabolic syndrome (SM), polycystic ovary syndrome (PCOS) and obesity. However, several cases of Insulin Autoimmune Syndrome (IAS) have been reported in subjects taking ALA. The aim of the present review is to describe the main chemical and biological functions of ALA in glucose metabolism, focusing on its antioxidant activity, its role in modulating insulin sensitivity and secretion and in symptomatic peripheral diabetic polyneuropathy. We also provide a potential explanation for increased risk for the development of IAS.
Alpha-lipoic acid (ALA) is a supplement for managing chronic diseases
Observational StudyPubMedLow Quality
Animal Studies(1)
Preclinical animal research — not a substitute for human evidence.
Prieto-Hontoria PL, Pérez-Matute P, Fernández-Galilea M, López-Yoldi M, Sinal CJ, Martínez JA · Biochimica et biophysica acta · 2016
Chemerin is a novel adipokine associated with obesity and insulin resistance. α-Lipoic acid (α-LA) has shown beneficial properties on diabetes and obesity. The aim of this study was to examine the effects of α-LA on chemerin production in adipocytes in absence or presence of TNF-α, insulin and AICAR. The potential signaling pathways involved in α-LA effects on chemerin were also analyzed. α-LA actions on chemerin were tested in differentiated 3T3-L1 adipocytes and in some cases in human subcutaneous and omental adipocytes. Chemerin mRNA levels were measured by RT-PCR and the amount of chemerin secreted to culture media was determined by ELISA. α-LA induced a concentration-dependent inhibition on both chemerin secretion and mRNA levels in 3T3-L1 adipocytes. The AMPK activator AICAR and the PI3K inhibitor LY294002 dramatically abrogated both chemerin secretion and gene expression, and further potentiated the inhibitory effect of α-LA on che
Animal StudyPubMedLow Quality
Clinical Trial Registries(3)
Registered ongoing or completed trials (ClinicalTrials.gov).
This randomized, controlled, double-blind study evaluates the utility of alpha-lipoic acid and silybum marianum , versus placebo, in the treatment of metabolic associated fatty liver disease.
This research study aims to investigate the effect of adding Alpha lipoic acid (ALA) supplement to letrozole treatment in infertile women with polycystic ovary syndrome (PCOS). The study will include 150 PCOS participants seeking fertility treatment. They will be randomly divided into two groups - control and intervention. Both groups will receive standard PCOS care including lifestyle counseling. The control group will be treated with letrozole only. The dose will start at (2.5 mg) for 5 days and can increase up to (7.5 mg) based on response. The intervention group will take ALA supplements along with letrozole treatment. ALA tablets (600mg) will be given three times daily starting from day 3 of the menstrual cycle till human chorionic gonadotropin (HCG) injection day. Letrozole dose for the intervention group will also follow the same incremental protocol as the control group. Patient monitoring will involve trans-vaginal ultrasound scans on certain cycle days to check follicle growth and the thickness of uterus lining. Once a follicle reaches 18mm in size, an intramuscular HCG injection will be given. Couples will be asked to have intercourse 36 hours after the injection.
Pregnancy will be tested two weeks later if menstruation does not occur. Metabolic, hormonal, and ultrasound parameters will be recorded at baseline and follow-ups. All adverse effects of the treatment will be noted. The study period will be a maximum of 3 treatment cycles or untill pregnancy is achieved. Outcome measures include ovulation and pregnancy rates. The effect of ALA on metabolic parameters (fasting glucose, fasting insulin, BMI and HOMA-IR), hormone levels (mid-luteal progesterone and serum estradiol), and follicular growth will also be assessed. Proper sample size and randomization methods will be followed. A Statistical analysis of collected data will help determine if ALA has additional benefits when combined with letrozole for PCOS fertility treatment. Finally, the results will be statistically analyzed. Statistical analysis will be done using the SPSS statistical software package.
This study will investigate whether the addition of Quercetin or Alpha-Lipoic Acid (ALA) to standard metformin therapy can improve symptoms, hormone levels, metabolic health, and quality of life in women with polycystic ovary syndrome (PCOS). Over 3 months, participants will be randomly assigned to one of three groups: metformin alone, metformin plus Quercetin, or metformin plus ALA. Researchers will measure changes in hormones, blood sugar, cholesterol, and antioxidant markers, as well as quality of life and medication adherence. Physical measurements and side effects will also be recorded to assess safety and overall benefit.
Clinical TrialClinicalTrials.govModerate Quality
Limitations: Many human studies, even randomized controlled trials, are often relatively small in sample size. There can be heterogeneity in study designs, populations, dosages, and duration of intervention, making direct comparisons and synthesis challenging. Further large-scale, long-term trials are often needed to confirm and generalize findings.
This page is educational. Statements use phrases like "may support" and "has been studied for"because no remedy here is approved to cure, treat, or reverse any condition. Discussion happens on the ailment pages — community statistics here are derived from those reports. Always consult a qualified clinician.
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