Alpha Lipoic Acid: Benefits, Uses And Supplements

The rundown on Alpha Lipoic Acid

• Alpha Lipoic Acid (ALA) is a naturally occurring compound involved in cellular energy metabolism and antioxidant activity.
• ALA has been studied for its potential role in glucose metabolism and nerve health, although research findings vary.
• There is no single ALA amount or time of day that is suitable for everyone.
• Follow the product label and seek professional advice before combining ALA with medicines or other supplements.

Alpha Lipoic Acid (ALA) might not be as familiar as some other antioxidants, but it has an important role within the body. This naturally occurring compound is involved in cellular energy metabolism and also has antioxidant properties¹ ².

This guide explains what Alpha Lipoic Acid is, the areas researchers have studied and what to know before using an ALA supplement.

What is Alpha Lipoic Acid? 

So, what exactly is Alpha Lipoic Acid? Alpha Lipoic Acid or ALA is a naturally occurring compound involved in the body’s cellular energy processes¹. It is both water- and fat-soluble, allowing it to function in different environments within the body² ³.

Within the mitochondria, ALA acts as a coenzyme in reactions that help convert nutrients into ATP, a form of energy cells use to carry out their normal functions⁴. This means ALA contributes to cellular energy metabolism rather than providing the body with energy directly.

What is the main use of Alpha Lipoic Acid?

Within the body, ALA is primarily involved in cellular energy metabolism and antioxidant activity⁵ ⁶. It helps neutralise free radicals and may also help regenerate other antioxidants, including vitamins C and E⁶ 

What are the potential Alpha Lipoic Acid benefits?

Research into the potential benefits of Alpha Lipoic Acid has focused on cellular energy metabolism, antioxidant activity, glucose metabolism and nerve health⁷. The evidence varies across these areas, so research findings should not be interpreted as guaranteed benefits for everyone. 

Supports cellular energy and metabolism

ALA assists enzymes involved in converting nutrients into ATP, a form of energy cells use to carry out their normal functions⁷ ⁸. This role in cellular energy metabolism is why ALA is frequently studied in relation to metabolic and mitochondrial health.

Antioxidant activity

Antioxidants play a vital role in protecting your body from oxidative stress, the wear and tear caused by everyday factors like pollution, diet, and even intense exercise.

What sets ALA apart is its ability to work in both water and fat-based environments within the body³. It also supports your body’s natural defence system by helping to regenerate important nutrients such as:

• Vitamin C
• Vitamin E
• Glutathione⁹

This makes ALA a powerful nutrient for strengthening your body’s natural defence system¹⁰ ¹¹ ¹².

Supports healthy blood sugar balance

Research shows that ALA can help stimulate glucose uptake, especially in muscles and fat cells¹³. This means it may support healthier blood sugar levels, which may be beneficial for those aiming to maintain healthy blood glucose or maintain more stable energy throughout the day.

Nerve health

ALA has also been studied for its neuroprotective properties. Studies suggest it can support nerve function by reducing oxidative stress in nerve tissues¹⁴.

Combined with its role in energy metabolism, this may contribute to reducing feelings of fatigue, helping you feel more energised and focused throughout the day.

What should you know about Alpha Lipoic Acid supplements?

Your body does naturally produce ALA, and while it’s also present in foods like spinach and red meat, the amounts are relatively modest. This is where Alpha Lipoic Acid supplements can help.

Incorporating ALA into your wellness routine offers a convenient way to support energy production, antioxidant defences, and glucose metabolism.

How much alpha-lipoic acid should you take a day?

There is no single daily amount of Alpha Lipoic Acid that is suitable for everyone. ALA supplements are available in different strengths, and an appropriate amount may depend on the product and individual health needs¹⁵. ALA is absorbed after oral intake, although its bioavailability may be affected by whether it is taken with food¹⁶ ¹⁷. 

When taking ALA supplement: 

• Follow the dosage directions on your chosen product
• Take it on an empty stomach for best absorption
• Speak to a health professional for personalised advice

Can you take alpha-lipoic acid before bed?

There is no universally suitable best time to take Alpha Lipoic Acid. Some people may choose to take it before bed, while others may find another time easier to maintain.

Taking ALA around food may affect its absorption¹⁷. Follow the timing directions on the specific product label. If you are unsure how to fit it around meals, medicines or other supplements, ask a pharmacist or healthcare professional.

Can I take magnesium and Alpha Lipoic Acid together?

Magnesium and alpha-lipoic acid can be taken together and may work synergistically to support:

• Nerve health
• Muscle function
• Energy production
• Antioxidant activity18 ¹⁹

As always, it’s a good idea to chat with your healthcare practitioner, especially if you're combining multiple supplements or managing specific health concerns.

Is Alpha Lipoic Acid right for you? 

Alpha Lipoic Acid plays a role in cellular energy metabolism and antioxidant processes, while its potential supplemental uses continue to be studied. Whether an ALA supplement is suitable for you depends on your individual needs, health and any medicines or other supplements you use.

Follow the product label and speak with a healthcare professional if you are unsure whether ALA belongs in your routine.

To learn more about how nutrients support normal body processes, read about antioxidants and their benefits or explore our complete guide to multivitamins in Australia on the Swisse Wellness Hub.

References:

1. Salehi, B., Yılmaz, Y. B., Antika, G., Boyunegmez Tumer, T., Mahomoodally, M. F., Lobine, D., Akram, M., Riaz, M., Capanoglu, E., Sharopov, F., Martins, N., Cho, W. C., & Sharifi-Rad, J. (2019). Insights on the use of α-lipoic acid for therapeutic purposes. Biomolecules, 9(8), 356. https://doi.org/10.3390/biom9080356 (Introduction, organosulfur compound)
   
2. Superti, F., & Russo, R. (2024). Alpha-lipoic acid: Biological mechanisms and health benefits. Antioxidants, 13(10), 1228. https://doi.org/10.3390/antiox13101228 (Introduction, mitochondria)
   
3. Superti, F., & Russo, R. (2024). Alpha-lipoic acid: Biological mechanisms and health benefits. Antioxidants, 13(10), 1228. (Part 2, solubility)
   
4. Salehi, B., et al. (2019). Insights on the use of α-lipoic acid for therapeutic purposes. Biomolecules, 9(8), 356. (Therapeutic potential)
   
5. Superti, F., & Russo, R. (2024). Alpha-lipoic acid: Biological mechanisms and health benefits. Antioxidants, 13(10), 1228. (Part 2, oxidized ALA and DHLA)
   
6. Superti, F., & Russo, R. (2024). Alpha-lipoic acid: Biological mechanisms and health benefits. Antioxidants, 13(10), 1228. (Antioxidant effects)
   
7. Capece, U., Moffa, S., Improta, I., Di Giuseppe, G., Nista, E. C., Cefalo, C. M. A., Cinti, F., Pontecorvi, A., Gasbarrini, A., Giaccari, A., & Mezza, T. (2022). Alpha-lipoic acid and glucose metabolism: A comprehensive update on biochemical and therapeutic features. Nutrients, 15(1), 18. https://doi.org/10.3390/nu15010018 (Part 3, ATP production)
   
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9. Superti, F., & Russo, R. (2024). Alpha-lipoic acid: Biological mechanisms and health benefits. Antioxidants, 13(10), 1228. (Part 2, regenerates antioxidants)
   
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11. Superti, F., & Russo, R. (2024). Alpha-lipoic acid: Biological mechanisms and health benefits. Antioxidants, 13(10), 1228. (Part 2, oxidized/reduced forms)
    
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13. Capece, U., et al. (2022). Alpha-lipoic acid and glucose metabolism. Nutrients, 15(1), 18. (Part 4, glucose uptake)
    
14. Superti, F., & Russo, R. (2024). Alpha-lipoic acid: Biological mechanisms and health benefits. Antioxidants, 13(10), 1228. (Part 4, neuroprotective)
    
15.  Shay, K. P., Moreau, R. F., Smith, E. J., Smith, A. R., & Hagen, T. M. (2009). Alpha-lipoic acid as a dietary supplement: Molecular mechanisms and therapeutic potential. Biochimica et Biophysica Acta, 1790(10), 1149–1160. https://doi.org/10.1016/j.bbagen.2009.07.026
16. Salehi, B., et al. (2019). Insights on the use of α-lipoic acid for therapeutic purposes. Biomolecules, 9(8), 356. (Absorption)
    
17. Salehi, B., et al. (2019). Insights on the use of α-lipoic acid for therapeutic purposes. Biomolecules, 9(8), 356. (Timing before/after food)
    
18. Kiran, M., Pawaskar, M., Sheikh, M. S., & Waghambare, M. (2021). Safety and efficacy for the combination of Alpha Lipoic Acid, gingko biloba, vitamin C, zinc, magnesium, vitamin B6, methylcobalamin, vitamin E and chromium picolinate for the medical management of age related hearing loss: Post marketing surveillance. ResearchGate. https://www.researchgate.net/publication/353456783
19. Cepeda, V., Ródenas-Munar, M., García, S., Bouzas, C., & Tur, J. A. (2025). Unlocking the power of magnesium: A systematic review and meta-analysis regarding its role in oxidative stress and inflammation. Antioxidants, 14(6), 740. https://doi.org/10.3390/antiox14060740