Free deliveryWhy The Wellness recommends this
Curated, not stocked.
N-Acetylcysteine earned its place on our shelves because the evidence behind it is genuinely substantive — this is not a trend ingredient. It has a long clinical track record in respiratory and liver medicine, and the glutathione-precursor mechanism is well understood. We selected Pure Encapsulations for their consistently clean formulations and straightforward labelling, which matters when a clinician is building a patient protocol and needs to know exactly what is in the capsule.
About this product
NAC
Pure Encapsulations NAC is a supplement providing N-Acetylcysteine, a precursor to glutathione — the body's most abundant endogenous antioxidant. By replenishing intracellular cysteine, NAC supports the ongoing production of glutathione, which plays a central role in neutralising oxidative stress and supporting detoxification pathways, particularly in the liver.
NAC is studied for its role in respiratory health, where it may help maintain normal mucus viscosity and support the mucosal lining of the airways. It is commonly considered by those with high oxidative load — including people in intensive training, individuals with regular alcohol intake, or those managing chronic inflammatory conditions. It also has a long-standing clinical history in liver support, particularly in contexts of toxic or metabolic stress.
This product suits those who have identified oxidative stress or poor antioxidant status through clinical assessment, or who are looking for targeted liver and respiratory support as part of a broader protocol. It fits naturally alongside broader antioxidant nutrition or as a standalone daily supplement.
Pure Encapsulations is a well-regarded professional supplement brand with a consistent focus on clean formulations. This product contains N-Acetylcysteine as the sole active, making it straightforward to integrate into an existing regimen without concern about overlapping nutrients from a complex blend.
What it does
Benefits
- 01
Supports glutathione production to address oxidative stress
- 02
May help maintain healthy respiratory mucus clearance
- 03
Studied for liver detoxification and toxic stress support
- 04
Suited to high training loads with elevated oxidative burden
- 05
Single-active formula for clean, targeted supplementation
Get the most from it
How to use
Take 1 capsule one to two times daily, as directed on the packaging. NAC is generally better tolerated when taken with food, particularly if you have a sensitive stomach.
What's inside
Ingredients
View full ingredient list
N-Acetylcysteine 900mg
Common questions
Frequently asked
What is NAC and how does it work?
N-Acetylcysteine is a stable, bioavailable form of the amino acid cysteine. The body uses it to synthesise glutathione, a key antioxidant involved in liver detoxification and protection against oxidative damage in cells throughout the body.
Who is most likely to benefit from taking NAC?
NAC is most relevant for people with increased oxidative stress — such as those in heavy training, individuals with regular alcohol intake, or those with respiratory conditions where mucosal support is a priority. It is worth discussing with a clinician if you are unsure whether it fits your needs.
Is NAC safe to take alongside other supplements or medications?
NAC is generally well tolerated, but it can interact with certain medications, including nitroglycerin and some chemotherapy agents. If you take any prescription medication, check with your doctor or pharmacist before starting NAC.
How long before I notice a difference?
NAC works by supporting ongoing antioxidant processes rather than producing an immediate noticeable effect. Most clinical observations are made over weeks to months of consistent use, and changes may be more apparent through markers like blood glutathione levels than through subjective feeling alone.
Can I take NAC on an empty stomach?
Some people experience mild nausea when taking NAC without food. Taking it with a meal is a sensible precaution, particularly when first starting the supplement.
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