Addiction
Evidence to date does not support the efficacy for N-acetylcysteine in treating addictions to gambling, methamphetamine, or nicotine. Based upon limited evidence, NAC appears to normalize glutamate neurotransmission in the nucleus accumbens and other brain structures, in part by upregulating the expression of excitatory amino acid transporter 2 (EAAT2), a.k.a. glutamate transporter 1 (GLT1), in individuals with addiction. While NAC has been demonstrated to modulate glutamate neurotransmission in adult humans who are addicted to cocaine, NAC does not appear to modulate glutamate neurotransmission in healthy adult humans. NAC has been hypothesized to exert beneficial effects through its modulation of glutamate and dopamine neurotransmission as well as its antioxidant properties. Microbiological use
Acetylcysteine can be used in Petroffs method of liquefaction and decontamination of sputum, in preparation for recovery of mycobacterium. It also displays significant antiviral activity against the influenza A viruses.Acetylcysteine has bactericidal properties and breaks down bacterial biofilms of clinically relevant pathogens including Pseudomonas aeruginosa, Staphylococcus aureus, Enterococcus faecalis, Enterobacter cloacae, Staphylococcus epidermidis, and Klebsiella pneumoniae. Other uses
Acetylcysteine has been used to complex palladium, to help it dissolve in water. This helps to remove palladium from drugs or precursors synthesized by palladium-catalyzed coupling reactions. N-actelylcysteine can be used to protect the liver. Side effects
The most commonly reported adverse effects for IV formulations of acetylcysteine are rash, urticaria, and itchiness. Up to 18% of patients have been reported to experience anaphylaxis reaction, which are defined as rash, 
hypotension, wheezing, and/or shortness of breath. Lower rates of anaphylactoid reactions have been reported with slower rates of infusion.
Creon may refer to:

Greek history
Creon, the first annual eponymous archon of Athens, 682–681 BC

Greek mythology
Creon (king of Thebes), mythological king of Thebes
Creon (king of Corinth), father of Creusa/Glauce in Euripides Medea
Creon, son of Heracles by a daughter of Thespius, king of Thespiae

Medicine
Creon, a brand name of a pancreatic enzymes medication

Places
Créon, a commune in the Gironde department in France
Créon-dArmagnac, a commune in the Landes department in France

Other
Creon a genus of butterfly, in the family Lycaenidae, containing the species Broadtail royal
USS Creon (ARL-11), a World War II U.S. Navy landing craft repair ship

See also
Kreon, a DC Comics character
Kreon, a minifigure (similar to Lego minifigure) from Kre-O construction toys manufactured by Oxford, a Korean company, and marketed by Hasbro