Regulatory agencies have emphasized that unapproved injectable peptides should not be promoted for human use, so each lab is responsible for maintaining compliance and keeping their work firmly in the research category rather than therapeutic practice
Bowers K, Li Q, Bressler J, Avramopoulos D, Newschaffer C, Fallin MD (2011) Glutathione pathway gene variation and risk of autism spectrum disorders
GBD 2016 Motor Neuron Disease Collaborators
Researchers at those dose levels either need to split the dose into two injections or use a different reconstitution volume
Daily B12 injections are especially crucial if you show neurological symptoms of B12 deficiency
Pros: Its as pure as it gets, so theres nothing that could interfere with your peptides structure or your experiment