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Long-term human safety data does not exist, which is the main caution
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It is stored in the liver and whatever your body doesn't use is excreted through urine, Allen says
doi:10.1016/j.mehy.2012.07.034, PMID: 22951418 Marshall HE, Stamler JS (2001) Inhibition of NF-kappa B by S -nitrosylation
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