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NAC Supplements Guide | 5 Practitioner Reviewed NAC Supplements

NAC Supplements Guide | 5 Practitioner Reviewed NAC Supplements
  • Health advice
  • May 22, 2026

NAC - or N-Acetyl Cysteine - is one of the most popular supplements in Australia right now. It's a form of the amino acid L-cysteine, and your body uses it to make glutathione. Glutathione is your body's most powerful built-in antioxidant [1].

Glutathione helps protect your cells from damage. It also supports your liver, your immune system, and your lungs. The catch is that your body needs enough cysteine to make it - and most people don't get enough from food alone. That's where NAC comes in [1,2].

More and more Australians are taking NAC every day. People use it for antioxidant support, liver health, recovery after exercise, and general immune health. It's one of the few supplements with a long history of use in both hospitals and sports nutrition - which gives it a lot of credibility.

There are now many NAC products available in Australia, and they're not all the same. Dose, format, purity, and intended use all matter. We put together this guide to help you compare the best NAC supplements at Mr Vitamins, so you can pick the right one with confidence.

What is NAC?

NAC (N-Acetyl Cysteine) is a stable form of the amino acid L-cysteine. It absorbs into your body more easily than plain cysteine [1]. Once inside, your body converts it to cysteine, which it then uses - along with glycine and glutamine - to make glutathione [2]. Glutathione is an antioxidant that protects your cells and helps your body get rid of harmful substances.

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Food Sources
Poultry, eggs, garlic, onion, broccoli
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💊
NAC Supplement
N-Acetyl Cysteine
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Glutathione
The body's master antioxidant
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Cell Benefits
Antioxidant protection, detox, immunity

What Makes a High-Quality NAC Supplement?

Not all NAC products are made the same way, and the differences matter more than they might seem. Before comparing specific brands, it helps to know what separates a well-made NAC supplement from an average one.

  • 100% pure NAC, no hidden blends
    • The label should say exactly how much N-Acetyl Cysteine is in each serve - not a "proprietary complex" or blended dose
    • Avoid products that pad out the formula with unnecessary fillers, flow agents, or artificial additives
  • Independent testing and verification
    • Look for HPLC-verified purity testing, which confirms the product contains what the label claims
    • GMP-certified manufacturing means the facility follows strict quality and safety standards
    • HACCP certification adds an extra layer of food-safety assurance for powder products
  • Correct Australian regulatory category
    • NAC is currently sold in Australia as a Formulated Supplementary Sports Food, or for compounding use under practitioner supervision
    • It does not currently hold an AUST L listing as a complementary medicine [3]
    • A high-quality product will state its correct category clearly rather than implying a therapeutic claim it isn't registered for
  • Stable, well-formulated delivery
    • NAC is sensitive to heat, moisture, light, and air [1]
    • Quality brands package powders in ways that limit air exposure, and capsules in sealed, moisture-resistant packaging
  • Clear, evidence-based dosing guidance
    • Look for a suggested serve that sits within the range used in research - generally 300 mg to 2,400 mg per day [3,5]
    • Reputable brands don't push doses beyond what's been studied without practitioner guidance
  • Transparent sourcing and manufacturing
    • Australian-made and owned brands are generally easier to verify for manufacturing standards
    • A quality brand will disclose where the product is made, not just where it's sold

Every product in this guide was assessed against these criteria before being included - not just for what's on the label, but for how it's tested, made, and regulated.

How we selected these products: Our practitioner team evaluated NAC supplements available at Mr Vitamins based on ingredient quality, clinical evidence for key actives, practitioner-grade manufacturing standards, format suitability, and value. This guide was written by Christina Hanley BHSc (Nutritional Medicine) and reviewed by Yurie Sato BHSc (Naturopathy), in line with our editorial policy. Live More You is Mr Vitamins' own practitioner-developed brand and was assessed against the same criteria as every other product. No brand has paid for inclusion or placement in this guide.

Best NAC Supplements Recommended By Our Staff

Live More You Nutraceuticals N-Acetyl-Cysteine 150g

1. Live More You Nutraceuticals N-Acetyl-Cysteine 150g

Live More You is Mr Vitamins' own practitioner-developed brand. Their NAC is a pure, unflavoured powder made to support your body's own glutathione production at a practical daily dose.

Each level scoop gives you 600 mg of 100% pure N-Acetyl L-Cysteine. There are no fillers, binders, flavours, or excipients - just NAC.

A 600 mg daily serve is a dose commonly used in NAC research, including long-term respiratory studies [3]. That means one scoop a day gives you a research-aligned dose with no guesswork.

With 250 serves in a 150 g tub, it's the best-value NAC in this guide at around $0.18 per serve. It also works out cheapest per gram, so the low price isn't just down to a smaller serve.

Mix one level scoop into 250 ml of water, juice, or your favourite drink, or take as directed by your healthcare professional. NAC has a naturally sour taste, so juice or a smoothie can help if you find it strong.

This is a practitioner product, so you'll complete a short health survey before purchase. A Mr Vitamins naturopath reviews it and may contact you to confirm it's the right fit.

It's our top pick for anyone who wants a pure, practitioner-backed NAC powder to take every day at great value. If you're after one tub that lasts more than eight months at a standard dose, this is it.

Key details: 150 g powder | 600 mg NAC per scoop | 250 serves | 100% pure NAC | No fillers, binders, flavours, or excipients | Unflavoured | Practitioner product, health survey required | TGA status: Compounding | Approx. cost per 600 mg serve: ~$0.18


BioActiv Healthcare NAC Pure 600mg

2. BioActiv Healthcare NAC Pure 600mg

BioActiv Healthcare is a trusted Australian brand known for clean, well-dosed supplements. Their NAC Pure 600mg capsule is a great starting point if you want something simple, convenient, and free from unnecessary ingredients.

Each vegetarian capsule contains 600 mg of pure N-Acetyl Cysteine. There are no fillers or binders. It's soy free, gluten free, and vegan. You get exactly what's on the label - nothing more, nothing less.

The suggested dose is one capsule daily with a meal. At 600 mg per serve, this sits within the range most people use for general health [3]. Your doctor or practitioner can advise if a higher dose is right for you.

BioActiv Healthcare is part of a general health range rather than a hardcore sports brand. That makes it easy for everyday users to work into their routine. If you're new to NAC and want a no-fuss capsule from an Australian brand, this is a solid place to start.

Key details: 600 mg NAC per capsule | 90 vegetarian capsules | No fillers or binders | Soy free, gluten free, vegan | Australian brand | TGA status: Sports Food | Approx. cost per 600 mg serve: ~$0.42


Healthwise NAC - N-Acetyl-L-Cysteine

3. Healthwise NAC N-Acetyl-L-Cysteine 150g

Healthwise is well known in Australia for pharmaceutical grade amino acid powders. Their range is used by health practitioners and informed consumers alike. This NAC is 100% pure pharmaceutical grade powder - nothing else in the container.

The form of NAC used by Healthwise dissolves easily and is more stable than plain cysteine. The 150 g container gives you roughly 150 serves at 1,000 mg each. That's good value if you plan to take NAC every day over a long period.

The suggested dose is 1,000 mg - about one-third of a metric teaspoon - mixed into water or a drink between meals. A handy tip: adding 1 g of vitamin C powder to every 2 g of NAC may help your body convert it to glutathione more effectively [4]. This pairing is popular among health practitioners.

One thing to know about Healthwise powders: they're packed by weight without fillers or flow agents. This means they can clump if exposed to moisture. That's normal for a pure powder - just break it up and keep going. The brand also suggests using a straw if the taste bothers you, as NAC can be slightly acidic on the teeth.

This is the best pick for people who already use NAC and want a pure, flexible powder at a great price from a brand with a long track record.

Key details: 150 g powder | 100% pure pharmaceutical grade NAC | ~150 serves at 1,000 mg | No fillers or flow agents | Vegan, gluten free, dairy free | Pairs well with vitamin C | TGA status: Sports Food | Approx. cost per 1,000 mg serve: ~$0.35


Designs For Health N-Acetyl-Cysteine Oral powder

4. Designs for Health N-Acetyl-Cysteine Oral Powder

Designs for Health is a practitioner-only brand with a strong reputation for clinical-grade products. Their NAC Oral Powder is available at Mr Vitamins only for patients who have completed a consultation with the team. It's made for use under professional supervision as part of a tailored health plan.

Each scoop contains 1 g of 100% pure N-Acetyl Cysteine powder. It dissolves easily and has a pleasant taste - which matters when taking a supplement every day, especially in a clinical setting.

Research studies have used NAC at doses between 600 mg and 2 g per day [3,5]. Higher doses are usually split across the day. This powder format makes it easy to measure and adjust your dose as needed. A healthcare practitioner will give you specific directions for your situation.

There are a few important safety notes at clinical doses. NAC has mild blood-thinning effects, so people with bleeding disorders should use it with care [1]. It should not be combined with nitroglycerin heart medications, as the combination can lower blood pressure and cause headaches.

This product is best suited to people working with an integrative GP, naturopath, or other health professional who has specifically recommended NAC as part of a treatment plan. If that's you, the Designs for Health powder is a clean, clinical-grade option.

Key details: 100 g pure NAC powder | 1 g per scoop | Practitioner-only, consultation required | For compounding use | Easy to dissolve | Vegan friendly | Research dose range 600 mg-2 g daily | TGA status: Compounding | Approx. cost per 1,000 mg serve: ~$0.75


Switch Nutrition NAC: 100% Pure N-Acetyl Cysteine - 150 Serves

5. Switch Nutrition NAC 100% Pure N-Acetyl Cysteine - 150 Serves

Switch Nutrition is known for open-label, transparent supplements. You always know exactly what's in the tub. Their NAC powder is HPLC-verified and made in a GMP and HACCP-certified facility. With 150 serves per container, it also offers great value per dose.

Each serve is 800 mg of 100% pure N-Acetyl L-Cysteine. No flavours, fillers, sweeteners, or hidden extras. That level of transparency is reassuring when you're taking something every day.

NAC has a naturally sour, slightly lemony taste. It mixes well in fruit juice or a smoothie. Switch recommends mixing one scoop into 300 ml of water or your drink of choice. Take one serve daily with food, or as your healthcare provider advises.

Switch also notes that NAC works well alongside collagen (which provides L-glycine) and L-glutamine. Together, those three ingredients support your body's full glutathione production process [2]. That makes this a smart add-on if you're already using a supplement stack.

At 150 serves per container, this is one of the best-value NAC powders available for people who plan to take it regularly. Not suitable for children under 15, pregnant women, or breastfeeding women.

Key details: 120 g powder | 800 mg NAC per serve | 150 serves | HPLC verified | GMP and HACCP certified | No fillers, flavours, or sweeteners | Vegan certified | TGA status: Sports Food | Approx. cost per 800 mg serve: ~$0.43


Best NAC Supplements in Australia (2026 Comparison)

Product Format NAC per Serve Purity TGA Status Approx. Cost per Serve Best For
Live More You NAC 150g Powder 600 mg 100% pure, no fillers, binders, or excipients Compounding ~$0.18 per 600 mg serve Daily use at a research-aligned dose, best overall value
BioActiv Healthcare NAC Pure 600mg Capsule 600 mg Pure NAC, no fillers or binders Sports Food ~$0.42 per 600 mg serve NAC beginners, everyday convenience
Healthwise NAC 150g Powder 1,000 mg (variable) 100% pharmaceutical grade Sports Food ~$0.35 per 1,000 mg serve Value-focused users, flexible dosing
Designs for Health NAC Oral Powder Powder 1,000 mg per scoop 100% pure, clinical grade Compounding ~$0.75 per 1,000 mg serve Practitioner protocols, clinical use
Switch Nutrition NAC 150 Serves Powder 800 mg 100% pure, HPLC verified Sports Food ~$0.43 per 800 mg serve Active users, stacking with collagen and glutamine

Prices are approximate RRPs at time of writing and may vary. Cost per serve is calculated from the standard pack size at the labelled serving size for each product. NAC is currently available in Australia as a Formulated Supplementary Sports Food or for compounding use under practitioner supervision. It is not currently listed as a complementary medicine (AUST L). Always check product labels and speak with a healthcare professional for personal advice.

Storage and Stability: Protecting Your NAC

NAC can break down when exposed to heat, moisture, light, or air [1]. Capsules hold up better because the shell keeps them sealed. They're a good option for travel and daily use. Powders should be kept in an airtight container in a cool, dark spot - ideally the fridge - and used within three months of opening. Keep all NAC products below 25 degrees C. If the smell gets more pungent than usual, the colour changes, or the texture is off, the product may have degraded. Some clumping in pure powders (without flow agents) is normal - just break it up and carry on. Tip: taking a small vitamin C serve alongside your NAC may help stop it from oxidising [4].


NAC Supplement Side Effects: What to Know

NAC is safe for most healthy adults at normal supplement doses. Studies have used up to 2,400 mg per day without serious problems in most people [5]. That said, it's worth knowing what to expect before you start.

Possible side effects (usually mild and related to dose):

  • Upset stomach: nausea, bloating, or loose stools [1,3]
  • Mild headaches, especially in the first few days
  • A sulphur-like smell or taste (this is normal for NAC, not a sign of a bad product)
  • Rare: low blood pressure, especially when combined with certain medicines [1]

You're more likely to notice side effects if you:

  • Start with too high a dose
  • Take NAC on an empty stomach
  • Combine it with blood-thinning medicines or nitroglycerin heart medications [1]

How to reduce side effects:

  • Start low: 300 to 500 mg per day for the first week
  • Take it with food to reduce stomach upset
  • Build up slowly over one to two weeks
  • Use powder through a straw to keep it off your teeth

Is NAC safe long-term?

  • Short to medium-term research is reassuring [3,5]
  • If you take NAC for more than a month, some practitioners suggest also taking a mixed amino acid supplement to keep your amino acid levels balanced
  • High doses over a long time should be managed with a health professional

Important drug interactions:
NAC has mild blood-thinning effects. Do not combine it with nitroglycerin medicines (patches, creams, or tablets) - this can cause a big drop in blood pressure and severe headaches [1]. If you take blood thinners or heart medicines, speak with your doctor before starting NAC.

Important:
Always talk to a healthcare professional before starting NAC - especially if you are pregnant, breastfeeding, have a health condition, or take prescription medicines.


Everything You Need to Know About NAC

Are NAC supplements safe?

Yes - based on current research, NAC is considered safe for most healthy adults at normal doses. Studies have used 600 mg to 2,400 mg per day without serious side effects in most people [3,5]. Side effects tend to be mild and stomach-related. NAC also has a long history in clinical medicine - hospitals have used it intravenously for decades to treat paracetamol overdose [6]. That track record speaks to its safety. If you have a health condition or take prescription medicines, check with your doctor first.

Can you take NAC with other supplements?

Yes. NAC is commonly taken with other supplements, and some combinations may improve results. Vitamin C is the most useful pairing - 1 g of vitamin C with 2 g of NAC may help your body convert NAC to glutathione and stop it from oxidising [4]. Glycine and glutamine are the other two ingredients your body needs to make glutathione, so stacking all three together is a popular approach [2]. Milk thistle is another common pairing, particularly for liver-focused routines - see our guide to milk thistle for more on how the two work together. Some people also add alpha-lipoic acid or CoQ10 as part of a broader antioxidant routine. If you take prescription medicines, always check with a healthcare practitioner before adding new supplements.

Can you take NAC with NMN?

Yes, NAC and NMN are commonly stacked together as part of a broader cellular health and healthy ageing routine. NMN supports cellular energy production, while NAC supports antioxidant defence through glutathione - the two work through different pathways, which is why they're often paired rather than seen as duplicating each other [2]. If you're considering a longevity-focused stack, our comparison of the best NMN supplements is a good next step for choosing a quality NMN product to pair with your NAC.

How long does it take for NAC to work?

It depends on what you're using NAC for, and everyone responds a little differently. Some people notice more energy or better breathing within one to two weeks. For things like liver support or antioxidant status, most people see meaningful results after four to eight weeks of daily use [7]. NAC isn't a quick fix. It works best when you take it consistently every day as part of a healthy routine.

Is it better to take NAC or glutathione supplements?

NAC is usually the better option for raising glutathione levels in your body. When you swallow a glutathione supplement, most of it gets broken down in your gut before it can reach your cells. NAC, on the other hand, is absorbed well and converted into cysteine inside your cells - which is exactly where glutathione is made [1,2]. Studies show that taking NAC raises glutathione levels inside cells [7,8]. Liposomal glutathione may absorb better than regular glutathione supplements, but NAC is still the most well-studied and cost-effective choice for most people.

What are NAC supplements good for?

NAC is best known for supporting glutathione - your body's main antioxidant system [1]. This system helps protect your cells, support your liver, and keep your immune system working well. People commonly use NAC for antioxidant protection, liver and detox support [6], respiratory health and mucus clearance [9,10], recovery after exercise, immune support, and general wellbeing - see our practitioner guide to immune system supplements if immune health is your main focus. There is also growing research into NAC's role in mental health and brain function [8], but that science is still developing. As always, focus on what the evidence currently supports rather than the biggest claims on the label.

What time of day should you take NAC?

Most guidance suggests taking NAC between meals or on an empty stomach for the best absorption. Some research suggests food can slightly reduce how much NAC you absorb [1]. But if NAC upsets your stomach, taking it with a small amount of food is a sensible trade-off. Morning or early afternoon tends to work well for most people. Taking it before or after exercise is also a common approach, as it may help with recovery and reduce oxidative stress from training.

What is the difference between NAC powder and NAC capsules?

Both deliver the same thing - N-Acetyl Cysteine. The difference is in how you take it. Capsules are easy and convenient. They have no taste, so you avoid NAC's natural sulphur flavour. They're also great for travel. Powder gives you more flexibility. You can adjust your dose up or down easily, and it usually costs less per serve. You can mix it into smoothies, juice, or protein shakes. Powder is also handy when you're starting out and want to begin with a smaller dose. Both formats work well - it really comes down to your lifestyle and budget.

How should I store my NAC supplement?

Keep all NAC products in a cool, dry place below 25 degrees C, away from sunlight and moisture [1]. Powder is more sensitive to oxidation and clumping - keep the lid tight and refrigerate after opening. Use powder within three months of opening. Capsules are more stable but should still be kept away from heat and humidity. If your NAC powder smells much stronger than usual, changes colour, or clumps into a solid mass, it may have gone off. Replace it if that happens.

Is NAC good for liver health?

Yes - NAC has a well-established link to liver health. Your liver uses glutathione to process and remove toxins. Because NAC is a key building block for glutathione, it directly supports this process [1,2]. Your liver detoxifies in two stages: the first activates toxins, and the second clears them from the body. NAC supports both stages. In hospitals, NAC is used as the primary treatment for paracetamol overdose because it quickly raises glutathione levels in the liver [6]. For everyday liver support - especially for people exposed to environmental toxins or alcohol - NAC is one of the most well-supported supplements available. If liver and gut health is a broader focus for you, our liver and gut health range has other options worth exploring alongside NAC.

Can NAC help with respiratory health?

Yes. NAC has a well-documented ability to thin mucus in the airways. It breaks down the bonds that make mucus thick and hard to clear [9]. This can make breathing easier and more comfortable. A systematic review of 11 clinical trials found that people taking NAC were significantly more likely to stay free of respiratory flare-ups compared to those on placebo [10]. NAC has been used in European clinical medicine for decades as a respiratory treatment for exactly this reason. For Australians dealing with ongoing respiratory discomfort, seasonal issues, or recovery after illness, NAC may offer useful support. It does not replace prescribed treatment for diagnosed respiratory conditions. If you have asthma, check with your healthcare provider first, as some people with asthma can be sensitive to NAC.

Capsules vs Powder: Which NAC Format Is Right for You?

💊 Capsules
  • Convenient: Pre-measured, no mixing needed
  • No taste: Avoids NAC's natural sulphur flavour
  • Travel-friendly: Easy to take anywhere
  • More stable: Sealed shell protects against moisture and air
  • Consider: Higher cost per serve; dose is fixed per capsule
🧪 Powder
  • Flexible dose: Adjust up or down in small amounts
  • Better value: Lower cost per serve, especially in larger tubs
  • Easy to stack: Mix into protein shakes, juice, or smoothies
  • Good for beginners: Start low and build up gradually
  • Consider: Needs measuring; can taste sour; more sensitive to storage

Which NAC Product Should You Choose?

What format suits your lifestyle?
I want convenience and no taste
Go with capsules
I want flexible dosing and better value
Go with powder
What's your experience level and goal?
New to NAC - want a clean capsule to start
BioActiv Healthcare NAC 600mg
View product
Want pure pharmaceutical grade powder for flexibility
Healthwise NAC 150g
View product
What's your primary goal?
Daily use - practitioner-backed, 600 mg dose, best value per serve
Live More You NAC 150g
View product (health survey required)
Active user - HPLC-verified, easy to stack
Switch Nutrition NAC 150 Serves
View product
Working with a healthcare practitioner on a clinical plan?
Designs for Health NAC Oral Powder
View product (consultation required)

How to Choose the Right NAC Supplement for You

  • Check purity and transparency
    • Look for products that clearly say 100% pure NAC with no fillers or hidden blends
    • Where you can, choose brands that use HPLC testing or pharmaceutical grade verification
  • Understand how NAC is regulated in Australia
    • In Australia, NAC is sold as a Formulated Supplementary Sports Food or for compounding use under practitioner supervision
    • It does not currently hold an AUST L listing as a complementary medicine - worth knowing when comparing it to other supplements
    • Products sold as sports foods still need to meet Australian food standards
  • Buy from trusted retailers
    • Stick with established Australian stores like Mr Vitamins, where product quality is vetted
    • Avoid unverified international sources, where purity and labelling accuracy can't be guaranteed
  • Pick the right format for your routine
    • Capsules: easy, tasteless, good for travel and daily use
    • Powder: better value, flexible dose, easy to mix into shakes or drinks
  • Compare value by dose, not price
    • Look at cost per 800 mg or 1,000 mg serve rather than just the headline price - powders are almost always better value
  • Start with a sensible dose
    • A good starting range is 300 to 600 mg per day [3]
    • Most everyday products are dosed at 600 to 1,000 mg per serve
    • Doses above 1,200 mg should generally be split across the day and guided by a practitioner [5]
  • Get help if you need it

Bottom Line: Best NAC Supplements in Australia
NAC is a well-supported supplement for antioxidant protection, liver health, respiratory function, and immune support [1,6,9]. The right product depends on your goals and daily routine. Capsules are easy and taste-free. Powders are better value and easier to adjust. Start with 300 to 600 mg per day from a product that clearly states 100% pure NAC, and build up gradually. Always speak with a healthcare professional for personal guidance - especially if you take prescription medicines.

References

  1. Aldini G, Altomare A, Baron G, et al. N-Acetylcysteine as an antioxidant and disulphide breaking agent: the reasons why. Free Radic Res. 2018;52(7):751-762. doi:10.1080/10715762.2018.1468564
  2. Mokhtari V, Afsharian P, Shahhoseini M, et al. A review on various uses of N-acetyl cysteine. Cell J. 2017;19(1):11-17. doi:10.22074/cellj.2016.4872
  3. Decramer M, Rutten-van Molken M, Dekhuijzen PN, et al. Effects of N-acetylcysteine on outcomes in chronic obstructive pulmonary disease (Bronchitis Randomized on NAC Cost-Utility Study, BRONCUS): a randomised placebo-controlled trial. Lancet. 2005;365(9470):1552-1560. doi:10.1016/S0140-6736(05)66456-2
  4. Witschi A, Reddy S, Stofer B, Lauterburg BH. The systemic availability of oral glutathione. Eur J Clin Pharmacol. 1992;43(6):667-669. doi:10.1007/BF02284971
  5. Deepmala, Slattery J, Kumar N, et al. Clinical trials of N-acetylcysteine in psychiatry and neurology: a systematic review. Neurosci Biobehav Rev. 2015;55:294-321. doi:10.1016/j.neubiorev.2015.04.006
  6. Heard KJ. Acetylcysteine for acetaminophen poisoning. N Engl J Med. 2008;359(3):285-292. doi:10.1056/NEJMct0708278
  7. Berk M, Malhi GS, Gray LJ, Dean OM. The promise of N-acetylcysteine in neuropsychiatry. Trends Pharmacol Sci. 2013;34(3):167-177. doi:10.1016/j.tips.2013.01.001
  8. Lavoie S, Murray MM, Deppen P, et al. Glutathione precursor, N-acetyl-cysteine, improves mismatch negativity in schizophrenia patients. Neuropsychopharmacology. 2008;33(9):2187-2199. doi:10.1038/sj.npp.1301624
  9. Stey C, Steurer J, Bachmann S, Medici TC, Tramer MR. The effect of oral N-acetylcysteine in chronic bronchitis: a quantitative systematic review. Eur Respir J. 2000;16(2):253-262. doi:10.1034/j.1399-3003.2000.16b12.x
  10. Grandjean EM, Berthet P, Ruffmann R, Leuenberger P. Efficacy of oral long-term N-acetylcysteine in chronic bronchopulmonary disease: a meta-analysis of published double-blind, placebo-controlled clinical trials. Clin Ther. 2000;22(2):209-221. doi:10.1016/S0149-2918(00)88479-9

General Disclaimer

This article is intended for general informational and educational purposes only. It does not constitute medical advice and is not a substitute for professional healthcare advice, diagnosis, or treatment. Always read the label and follow the directions for use. If symptoms persist, talk to your healthcare professional.

The information in this article is not intended to diagnose, treat, cure, or prevent any disease or health condition. References to health benefits reflect the current state of published research and are not claims made about any specific product. Individual results may vary.

Products featured in this guide are available as Formulated Supplementary Sports Foods or for extemporaneous compounding use under practitioner supervision. They are not listed complementary medicines (AUST L) and are not evaluated or endorsed by the Therapeutic Goods Administration (TGA) for specific health indications. Always verify current regulatory status on the TGA Australian Register of Therapeutic Goods (ARTG).

Certain products on this page are practitioner-only and require a review before purchase. Live More You NAC is dispensed after a short health survey is reviewed by a Mr Vitamins naturopath. The Designs for Health NAC Oral Powder is available exclusively to patients who have completed a consultation with the Mr Vitamins team.

Live More You is Mr Vitamins' own practitioner-developed brand. It was assessed against the same purity, dose, manufacturing, format, and value criteria as every other product in this guide. Product selection and placement reflects the independent assessment of the Mr Vitamins practitioner and retail team. No external brand has paid for inclusion, placement, or editorial content. Prices stated are approximate recommended retail prices at the time of writing and are subject to change.

If you are pregnant, breastfeeding, taking prescription medications, or have an existing health condition, consult a qualified healthcare professional before using any supplement. Keep all supplements out of reach of children. Vitamin and mineral supplements should not replace a balanced diet.

© Mr Vitamins. All rights reserved. Content is reviewed periodically but may not reflect the most current product formulations, regulatory status, or research. Published: 1 May 2026. Last reviewed: 23 September 2026.

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