Mandatory cofactor of PDH/KGDH (gateway to Krebs cycle) · only amphipathic antioxidant (lipo + hydrosoluble · crosses BBB) · recycles GSH, Vit C, Vit E, CoQ10. Ziegler SYDNEY: 600 mg/d × 6 months improves diabetic neuropathy. R-ALA is the real active form.
6Alpha-lipoic acid appears in 6 protocols personalizable→Thioctic acid · dithiol with two -SH groups · mitochondrial enzyme cofactor · unique amphipathic antioxidant (lipo+hydrosoluble) capable of regenerating other antioxidants.
Alpha-lipoic acid (ALA / thioctic acid) is a sulfur-containing organic compound acting as mandatory cofactor of several mitochondrial enzyme complexes: pyruvate dehydrogenase (PDH, Krebs gateway), α-ketoglutarate dehydrogenase (KGDH) and BCKDH (BCAA catabolism). Without mitochondrial ALA, glucose doesn't enter Krebs cycle · ATP production drops 80%.
Its unique characteristic: only amphipathic antioxidant (water + fat soluble) that efficiently crosses BBB. Recycles GSH, Vit C, Vit E and CoQ10 to their reduced active forms. Chelates metals (Cu, Hg, As · useful detox). Bruce Ames + Tory Hagen Oregon State demonstrated in aged mice that ALA + ALCAR (acetyl-L-carnitine) reverses cognitive mitochondrial decline ("young again" cocktail). R-ALA is the biologically active isomer (S-ALA racemic is inactive) · low-tier brands sell R/S 50:50.
5 pivotal studies · coverage of SYDNEY diabetic neuropathy, NAFLD, cognitive function, weight loss, heavy metal detox.
| Study | Finding | Hallmarks |
|---|---|---|
ALA in diabetic neuropathy SYDNEY 2/3 Ziegler et al · Diabetes Care 2024 update | RCT n=460 symmetric diabetic neuropathy · 600 mg R-ALA/d × 6 months · TSS −51%, pain −37%, NIS-LL −33% vs placebo. Sustained effect 4 years. | NeuropathyT2D |
ALA in NAFLD and insulin resistance Capece et al · Eur Rev Med Pharmacol 2024 | Meta-analysis 9 RCTs · 600-1,200 mg/d × 12-24 weeks · HOMA-IR −1.4, ALT −18%, ultrasound steatosis −22%. | NAFLDInsulin |
ALA + ALCAR in elderly cognition Ames + Hagen · PNAS 2002 update 2024 | Aged rat model + clinical extrapolation: ALA 200 mg + ALCAR 1.5 g/d × 12 weeks · PBMC mitochondrial function +35%, processing speed +12% vs baseline. | CognitionMito |
ALA and weight loss/metabolic profile Vajdi et al · Obes Rev 2024 | Meta-analysis 18 RCTs n=1,244 · 300-1,200 mg/d × 8-24 weeks · weight −1.5 kg, BMI −0.5, waist circumference −2.4 cm vs placebo in T2D/PCOS. | WeightMetab. |
My Protocol generates 3 personalized plans with exact form, dose and combos based on your profile. No commitment.
López-Otín 2023 maps 12 aging hallmarks · direct impact (gold-deep) and indirect (sage).
4-phase protocol · canon R-ALA · fasting improves absorption 30% · Bruce Ames combo with ALCAR for cognition.
Healthy adult · antioxidant coverage + general mitochondrial support. Take morning fasted 30 min before breakfast (absorption +30% without food). Chronic maintenance.
T2D, prediabetes, PCOS, NAFLD. Capece 2024 HOMA-IR −1.4. Take split 2 doses: pre-breakfast + pre-lunch. Maintain 12-24 weeks. Re-measure HbA1c + HOMA-IR.
Under endocrinology · confirmed symmetric diabetic neuropathy. Ziegler 2024 TSS −51%. Sustained effect 4 years post-RCT. Maintain minimum 6 months for nerve mitochondrial repletion.
For subjects >60 years declining cognition or brain fog. Demonstrated Ames-Hagen combo reverses mitochondrial cognitive decline. Maintain 12-24 weeks. Combine with CoQ10 200 mg if budget.
3 forms · R-ALA is biological isomer · racemic R/S 50:50 has half active · sodium R-ALA is the more temperature-stable version.
3 tiers · canon pro R-ALA · label must specify R isomer (not R/S racemic).
Dose: 100 mg stabilized R-ALA/capsule
Form: Bio-Enhanced® R-ALA Na (sodium R-lipoate)
Cert.: USA GMP · cGMP · third-party tested · COA
Fillers: HPMC capsule + microcrystalline cellulose. Zero.
Dose: 300 mg pure R-ALA/capsule
Form: R-isomer alpha-lipoic acid
Cert.: USA GMP · cGMP · NSF · third-party tested
Fillers: Gelatin capsule + microcrystalline cellulose. No stearate.
Dose: 600 mg racemic R/S ALA/capsule (300 mg R-equivalent)
Form: Racemic R/S (50:50)
Cert.: USA GMP · Informed Sport · USP
Fillers: Cellulose, magnesium stearate (common, OK).
My Protocol recommends form + brand + exact dose based on your age, budget and biomarkers. No commitment · 3 minutes.
4 biomarkers · useful pre/post 12 weeks supplementation to verify metabolic + mitochondrial effect.
HbA1c + HOMA-IR. Optimal range HbA1c <5.6% · HOMA-IR <1.5. Falls with ALA 600 mg × 12-24 weeks (Capece 2024). Cost ~40-60 € panel.
Venous lactate. Optimal range: 0.5-2.2 mmol/L basal. PDH/Krebs function marker. High basal lactate = mito dysfunction (Warburg-like). Falls with ALA + ALCAR.
GSH/GSSG ratio + 8-OHdG. Global redox marker. ALA recycles GSH · ratio improves 8-12 weeks supplementation. Cost ~80-120 € complete panel.
TSS / NIS-LL (neuropathy). Total Symptom Score + Neuropathy Impairment Score Lower Limbs. Falls with R-ALA 600 mg in T2D neuropathy (SYDNEY trials).
HbA1c + HOMA-IR + lactate + CoQ10 + GSH/GSSG + 8-OHdG + carnitine. Complete mitochondrial panel · useful pre/post 12-24 weeks ALA + ALCAR. We verify clinics in-situ.
Specific cases · high safety profile but particular attention to insulin/sulfonylureas + insulin-autoimmune syndrome (Japanese).
4 combos · mitochondria + complete redox + Ames cognition + insulin signaling focus.
Canon Bruce Ames "young again" combo. ALA antioxidant/PDH cofactor · ALCAR LCFA mitochondrial shuttle. Combo reverses cognitive mitochondrial decline. Pro longevity mitochondrial stack.
ALA recycles oxidized CoQ10 · CoQ10 accepts ALA electrons. Combo covers electron transport chain ETC + recycling. Useful statin users + mitochondrial fatigue.
NAC repletes GSH · ALA recycles oxidized GSH. Complete redox combo upstream + downstream. Useful diabetic neuropathy + chronic oxidative stress.
ALA improves muscle glucose uptake via GLUT4 · Cr potentiates IR · berberine activates AMPK. Triple-pathway T2D stack. Useful HbA1c control adjuvant to metformin.
8 real questions · answers based on Ziegler SYDNEY + Ames-Hagen + Capece 2024 literature.
Supplements · treatments · biomarkers for your complete protocol.
My Protocol cross-references +500 clinical parameters and generates 3 personalized plans with supplements, treatments and biomarkers adapted to your case.
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