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Why customers take it

Coughs & Colds

NAC is very popular to dissolve thick mucus and help people clear blocked noses and chesty coughs. 

Glutathione Antioxidant Boost

NAC is a precursor to glutathione, a powerful antioxidant. This is important during infections, intense exercise and times of stress, and always important to maintain a healthy heart and arteries. 

Muscle Recovery & Growth

NAC is often used to improve muscle growth and to speed up recovery times after exercise. It does this by working against oxidative stress and helping build muscle. 

Fertility support

NAC is a popular supplement to support male and female fertility. It's thought to support regular ovulation & sperm motility. 

Liver Detox

The liver needs NAC to power its work clearing the body of toxins. In times of extra demand, after a night on the town for example, it is popular for detox support. 

Dietary Suitability & Accreditations

Lactose Free Vegan Gluten Free Good Manufacturing Practice Free from Artificial Colours No Synthetic Binders or Fillers No Artificial Colours or Flavours Non GMO

Superior Quality | High-Strength | 6 Month Supply | Vegan | 100% Pure | 600mg NAC per Serving | No Binders | No Artificial Ingredients | Non-GMO | Gluten-Free | Lactose-Free | Clean Supplement

6 months supply of 180 easy-to-swallow capsules providing 600 mg of NAC per serving.

N-Acetyl-L-Cysteine (also called N-Acetyl-Cysteine or NAC) is the food supplement form of the natural amino acid Cysteine. NAC is molecularly enhanced to make it easily absorbed. 


Cysteine is made within the body using building blocks from protein foods including eggs, cheese and meats. At times, our demand for Cysteine increases and our bodies can struggle to make enough. 



Key benefits of NAC

NAC is prized as a supplement for its ability to boost levels of glutathione, the body’s most powerful antioxidant. Glutathione traps free radicals, the loose oxygen molecules that damage cells in the heart, arteries and other organs. Free radicals increase when we're ill and when we exercise intensely. 


As an antioxidant booster, NAC can prevent the muscle damage that comes from intense exercise. It can speed up recovery time after sports, and boost muscle building.

It’s a mucolitic, helping to dissolve thick mucus. This makes NAC helpful for people with colds, flu and chesty coughs, and even serious lung problems.

NAC is sometimes taken to support fertility for men and women. It’s thought to encourage more regular ovulation in women and improve sperm motility in men.

NAC is widely used as a supplement to support the liver in its work to detox the body.

L-cysteine is an important building block for keratin in healthy hair, nails and skin.


Why take NAC as a supplement?

NAC is typically at work in your body 2 to 3 hours after you take the capsule.

  • The ability to synthesise Cysteine and glutathione decreases with age.
  • Our need for Cysteine increases greatly during intense exercise.
  • Our bodies make cysteine from protein foods like meat, eggs and dairy foods, so it’s popular with vegetarians and vegans.
  • We may need extra Cysteine when we’re detoxing alcohol or certain other toxins.
  • Cysteine dissolves thick mucus, so our bodies may benefit from extra when we have chesty coughs, colds and flu.
  • When our bodies can’t synthesise Cysteine fast enough to meet demand, toxins may accumulate or oxidative tissue damage can begin. We might experience a hangover, muscle damage, a blocked nose or harm to our cardiovascular system.

N-Acetyl Cysteine (NAC) is the supplement form of Cysteine, which is acetylated (fermented) to make it easier to absorb and also make your supplement stay fresh for longer.

L-cysteine is an amino acid that contains sulphur. NAC supplements can have an eggy, sulphur-like smell which is a natural characteristic of the active ingredient.

Why choose VitaBright NAC?


Our easy-to-swallow capsules contain the most effective dose of 600mg NAC.

Our N-Acetyl Cysteine capsules contain no unnatural preservatives, flavourings or allergens. We use minimal additional ingredients to reduce the risk of adverse reactions.

Our NAC is third-party tested for purity, making sure it is free from contaminants.

It is a Vegan supplement.

High-quality, research-backed ingredients have been expertly combined for maximum effectiveness.

VitaBright supplements are produced in state-of-the-art, BRC accredited grade AA, UK manufacturing facilities operating to GMP standards. We use only the finest ingredients, double seal all bottles, and test for heavy metals to ensure there is no compromise on quality or safety.

Take 1 capsule a day, after a meal. N-Acetyl Cysteine can irritate the stomach lining if you take it on an empty stomach. 

You can open the capsules and stir the contents into a full glass of water or juice. 


Do not take activated charcoal along with NAC, as the charcoal will stop the NAC from being absorbed. 

NAC reduces the risk of blood clots by thinning the blood. If you are already being treated for this, talk to your healthcare professional to check if NAC is safe for you.

Nutritional Information
Serving Size: 1 Capsule
Servings Per Container: 180
Amount Per Serving
N-Acetyl-L-Cysteine (free form)
600 mg


N-Acetyl-L-Cysteine, Rice Flour, Vegetable Capsules Shell (HydroxyPropylMethylCellulose)


VitaBright supplements are produced in state-of-the-art, BRC accredited grade AA, UK manufacturing facilities operating to GMP standards. We use only the finest ingredients, double seal all bottles, and test for heavy metals to ensure there is no compromise on quality or safety.

This product is not designed to replace a varied and balanced diet. Do not exceed the stated dose. If you are pregnant, breastfeeding or taking any medication, please consult your doctor before use. Store in a cool, dry place. Keep out of reach of children.

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