N-Acetyl L-Cysteine (150mg): N-Acetyl L-Cysteine (NAC) is well known for its antioxidant and liver protecting abilities.[25,26,27] NAC is the primary substrate for glutathione, a non-essential amino acid that’s responsible for scavenging free radical from around the body. This essentially makes glutathione an incredibly powerful antioxidant.[28,29] If your body is deficient in NAC, it don’t have the required “building blocks” to synthesize glutathione, which can lead to an accumulation of reactive oxygen species (ROS) and oxidative stress. In case you weren’t aware oxidative stress is often a side effect of prohormone use! Supplementing with AC increases glutathione which effectively helps decrease ROS formation and supports optimal liver function.