Cold exposure has been practiced for centuries without identified chronic harms in otherwise healthy individuals
An animal study showed that NAC increased histamine release in conjunction with fluoride.[ref] In people given IV n-acetylcysteine in a hospital setting for acetaminophen poisoning, about 8% of the patients had an anaphylactoid reaction, defined as cutaneous (urticaria, pruritus, angioedema) or systemic (hypotension, respiratory symptoms) within five hours of receiving the IV
Wu D, Govindasamy L, Lian W, Gu Y, Kukar T, Agbandje-McKenna M, McKenna R
The Natures Craft and Phytoral brands also had nearly identical lot numbers
As a result, it has a role in sleep, mood, energy, anxiety levels, and more