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Supplement × Supplement·Evidence index

Acetyl-L-Carnitine and Alpha-Lipoic Acid: what the research found

PubMed indexes 8 records that name Acetyl-L-Carnitine and Alpha-Lipoic Acid together, either in the title or in an interaction, co-administration, or pharmacokinetic context. The key findings come first, in the authors’ own words, followed by every study with its design and PubMed link.

A summary of published research, not medical advice. A pharmacist can check any combination against your full list of medicines and supplements.

Key findings

What the studies concluded.

Reviews and human studies first. Each quote is the authors’ own conclusion about their study, not a NutriStack assessment, and a single study is not a consensus.

“Mechanisms of toxicity triggered by each single drug need to be deeply explored to better identify effective compounds to prevent or treat them. Moreover, additional experiments are mandatory to establish effective doses and length of treatment for each clinical situation in order to perform large and long-term randomized studies.”

Dinicola et al. · 2018 · Human study · details

“We also found that pretreatment with combined LA and ALC increased mitochondrial biogenesis and decreased production of reactive oxygen species through the up-regulation of the peroxisome proliferator-activated receptor-gamma coactivator 1alpha as a possible underlying mechanism. This study provides important evidence that combining mitochondrial antioxidant/nutrients at optimal doses might be an effective and…”

Zhang et al. · 2010 · Human study · details

“Spatial memory and temporal memory tests showed a trend in improving cognitive function in ApoE4 mice fed selective mitochondrial antioxidants acetyl-l-carnitine and R-alpha-lipoic acid. Our findings indicate that ApoE4 genotype-induced mitochondrial changes and associated structural damage may explain age-dependent pathology seen in AD, indicating potential for novel treatment strategies in the near future.”

The research

8 studies naming Acetyl-L-Carnitine and Alpha-Lipoic Acid.

Strongest relevance first: papers naming both substances in the title, then human trials and systematic reviews.

The Effect of acetyl-L-carnitine, Alpha-lipoic Acid, and Coenzyme Q10 Combination in Preventing Anti-tuberculosis Drug-induced Hepatotoxicity: A Randomized, Double-blind, Placebo-controlled Clinical Trial.

Iranian journal of pharmaceutical research : IJPR · 2021 · PMID 34903999

“25.6%, P = 0.017). In conclusion, using the combination of ALCAR, ALA, and CoQ10 may provide an effective strategy in preventing anti-TB DILI.”

Hakimizad et al. · From the abstract

Names both Acetyl-L-Carnitine and Alpha-Lipoic Acid in its title.

Natural products - alpha-lipoic acid and acetyl-L-carnitine - in the treatment of chemotherapy-induced peripheral neuropathy.

European review for medical and pharmacological sciences · 2018 · PMID 30058711

ReviewHuman subjects

“Mechanisms of toxicity triggered by each single drug need to be deeply explored to better identify effective compounds to prevent or treat them. Moreover, additional experiments are mandatory to establish effective doses and length of treatment for each clinical situation in order to perform large and long-term randomized studies.”

Dinicola et al. · Authors' conclusion

Names both Acetyl-L-Carnitine and Alpha-Lipoic Acid in its title.

Combined R-alpha-lipoic acid and acetyl-L-carnitine exerts efficient preventative effects in a cellular model of Parkinson's disease.

Journal of cellular and molecular medicine · 2010 · PMID 20414966

Research Support, N.I.H., ExtramuralHuman subjects

“We also found that pretreatment with combined LA and ALC increased mitochondrial biogenesis and decreased production of reactive oxygen species through the up-regulation of the peroxisome proliferator-activated receptor-gamma coactivator 1alpha as a possible underlying mechanism. This study provides important evidence that combining mitochondrial antioxidant/nutrients at optimal doses might be an effective and safe prevention strategy for PD.”

Zhang et al. · From the abstract

Names both Acetyl-L-Carnitine and Alpha-Lipoic Acid in its title.

The effect of acetyl-L-carnitine and R-alpha-lipoic acid treatment in ApoE4 mouse as a model of human Alzheimer's disease.

Journal of the neurological sciences · 2009 · PMID 19342064

Research Support, N.I.H., ExtramuralHuman subjects

“Spatial memory and temporal memory tests showed a trend in improving cognitive function in ApoE4 mice fed selective mitochondrial antioxidants acetyl-l-carnitine and R-alpha-lipoic acid. Our findings indicate that ApoE4 genotype-induced mitochondrial changes and associated structural damage may explain age-dependent pathology seen in AD, indicating potential for novel treatment strategies in the near future.”

Shenk et al. · From the abstract

Names both Acetyl-L-Carnitine and Alpha-Lipoic Acid in its title.

Acetyl-L-carnitine and alpha-lipoic acid: possible neurotherapeutic agents for mood disorders?

Expert opinion on investigational drugs · 2008 · PMID 18491985

ReviewHuman subjects

“L-carnitine and alpha-lipoic acid are pleiotropic agents capable of offering neuroprotective and possibly cognitive-enhancing effects for neuropsychiatric disorders in which cognitive deficits are an integral feature.”

Soczynska et al. · Authors' conclusion

Names both Acetyl-L-Carnitine and Alpha-Lipoic Acid in its title.

Limitations

What this evidence cannot tell you.

Search-based evidence indexes have real limits, and it is worth being explicit about them:

How to read this page

A literature summary, not guidance.

NutriStack

Track what you actually take.

NutriStack is a free iPhone app for organising a supplement routine: what you take, when, and what the published record says about it. Its exploratory interaction checker covers Acetyl-L-Carnitine, Alpha-Lipoic Acid, and several hundred other substances.

Log your routine, get reminders at the times you choose, and scan a label to add a product. The checker is a research and organisation tool, not a clinical decision aid.

NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.