NAC (N-Acetyl L-Cysteine) affects the neurotransmitters of the brain, and can increase one of the brain's most powerful antioxidants - Glutathione. NAC helps to prevent viral replication, and can counter toxicity from certain medications and help reduce addictions. NAC helps to normalise neurotransmitters such as dopamine and glutamine, which are both involved in addictions. It helps to reduce mucus, and so is good pneumonia and other lung issues such as asthma and bronchitis. NAC can also help reduce the symptoms of OCD, depression, axiety, autism, bipolar and schizophrenia. 60 capsules.