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doi: 10.1016/j.autrev.2008.08.003 228 HornigMGottschalkGPetersonDLKnoxKKSchultzAFEddyMLet al
Lower concentrations reduce discomfort but require larger injection volumes and deplete the vial faster
The same applies to oral vitamin C bioavailability is roughly 3050% from oral doses, compared with near-100% intravenously, and blood concentrations achievable via IV simply cannot be reached orally
NAC activates cystine-glutamate antiport transporters present in astrocytes, leading to the release of glutamate that stimulates extra-synaptic metabotropic receptors (mGluRs), thereby reducing the synaptic release of the neurotransmitter (Baker et al., 2002