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N Acetyl L Cysteine

  • Vegetarian
  • Vegan


In stock | Usually dispatched within 24 hours

Order before 8pm for same day dispatch. Order before 2pm on Sunday.


N Acetyl L Cysteine (NAC) is a modified form of cysteine which has been attached to an acetyl group. NAC has been shown to increase levels of the antioxidant glutathione which can be used to help reduce cell damage, speed recovery from injury and aid lean growth. By reducing cell damage, NAC has been linked with slowing the ageing process.

N Acetyl L Cysteine is particularly popular amongst those who perform high intensity and endurance based sports due to the fact that it can help reduce muscle damage and promote a healthy immune system.

Further to NAC's ability as an antioxidant, it is also widely used by those looking to maintain or build lean mass. It has been shown to help reduce fatigue during exercise.

Product Reviews - 16 reviews


- (11 / Feb / 2014)


Good quality product at a good price, quickly delivered and I recommend this company as I have always had good products from them and received orders asap. It tastes horrible as it should - I put it in capsules and enjoy the benefits of this excellent supplement without having to taste it - smells like bad eggs. I find that NAC is very good for my lung problems, clears up too much thick mucus and seems to protect me from colds, flu and lung infections. Also good to take if you have to take paracetamol as it protects the liver from damage.

- (08 / Dec / 2013)


over all good but doesnt taste good tastes like acid doesnt mix well and need to wait about 5-10min for it to soak in to the water. But it does the job i feel abit better and faster recovery

Tart but healthy

- (06 / Dec / 2013)


This is something that will do you good, best to read up on the benefits as there are many. I'll use it with effervescent vitamin c to help with the taste as it is very sharp on the tongue.

Goes Well With:

Vit c

NAC and liver damage

- (06 / Nov / 2013)


There is some disagreement over the liver damage/protection properties of NAC in the reviews here. NAC is the preferred treatment for paracetamol overdose and will protect your liver, except from when you have consumed alcohol and is still intoxicated. The research I have come across concludes that NAC will contribute to liver damage when you are in the state mentioned. But a great product by any means.

Excellent stuff!!!

- (23 / Jun / 2013)


I used to wake up sore and tired every morning. Now I take a teaspoon of N Acetyl L Cysteine stuff at night and I wake up feeling fresh (not sore or tired anymore). This stuff is amazing.

Goes Well With:


Good stuff/poor taste

- (25 / May / 2013)


I like this N Acetyl L Cysteine very much, but the taste is so poor I can hardly drink it.

Goes Well With:

Orange juice

N Acetyl L Cysteine

- (12 / May / 2013)


This N Acetyl L Cysteine is very good for the recovery. It works!

NAC antioxidant..

- (30 / Apr / 2013)


N Acetyl L Cysteine is very good quality, with excellent mixability. I already ordered 7 bags of 100g and I will order more soon.

Good product

- (04 / Apr / 2013)


Product arrive quickly the taste I am not sure of as I mix it in with my protein shake, but I mixes well and blends in well with what product you mix it with.

- (01 / Apr / 2013)


It's hard to say if N Acetyl L Cysteine has been effective as it is purely used as an antioxidant. Be prepared for a very acidic taste, I use it with dispersible Vitamin C tablets for extra effect and improved taste.


- (24 / Feb / 2013)


Sorry Terence Hughes! I meant Stephen Stannard RE: strange reference to liver damage as opposed to treating damaged livers.

call out

- (24 / Feb / 2013)


I'm only writing this to call out Terence Hughes who wrote something in his review about NAC "being known to" cause liver dysfunction according to medical papers he has read. From what I have seen, one of NACs key medical uses is TREATING liver failure. Always check these things for yourself with your doc.

- (09 / May / 2012)


"i use this cause I have bipoer disorder, i find that its amazing, the price is amazing, i have found my condition has improved, and will always continue to buy from you i have 1 teapoon a day ,and have found that the effects were the same as in the research papers i have been reading on this supplement and bipolar, thank you for stocking this as cheep as you do, "

- (14 / Feb / 2011)


"I agree with all the reviews here, and find it excellent value for money and effectiveness. However, again after having read many medical papers, I supplement this with Silymarin (Milk Thistle) at a rate of 1ml liquid form in a little water 3 times a day, since NAC is known to cause Liver dysfunction in some people and Silymarin guards against that."

- (31 / Jul / 2008)


"Forget about vitamin c, NAC is THE most important antioxidant you can supplement with. It is used routinely in hospitals to treat liver poisoning because it is so good at detoxifying the liver, which is great if you have had a heavy night on the booze, or you are using oral AAS / PH's. It also is a potent brain antioxidant, and been shown to neutralise the neurotoxin salsolinol found in stuff like chocolate which has been linked to Alzheimers. It tastes fine and mixes easily."

- (04 / Jan / 2008)


"An excellent product, NAC supplementation increases glutathione, an important antioxidant and has benefits for the immune system.\n\nComes as a pungent smelling heavy crystalline powder, you won't notice much physically when supplementing with NAC, but can rest assured that it is working to keep you healthy in the background."

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