The intestinal microbiota has also been shown to play a key role in pain and anxiety (Jiang et al., 2018), which may be related to the fact that intestinal microbiota can regulate pro-inflammatory cytokines (An et al., 2020), chemokines, and hypersensitivity through SCFAs, thereby avoiding the activation of nociceptors to cause pain
Unresolved safety questions The staff review identified uncertainty about immunogenicity, aggregation, peptide-related impurities, hypersensitivity, route-specific risk, repeated exposure, and long-term use
For a research buyer, the practical takeaway is to prioritize vendors that operate openly from the USA, publish batch-specific certificates, and support their materials with independent testing
A vial labeled 70 mg contains that much total solid, and total solid includes counter-ion, residual water and whatever else survived the process
,