One study that followed about 100 patients who were injected once in the knee with hyaluronic acid because of osteoarthritis determined that its effect lasts for a year in most cases, that it is optimally tolerated by patients and that it is completely safe
In practice, studies dissolve the peptide in sterile water or buffered media and apply it at tiny concentrations, usually somewhere between a billionth and a millionth of a mole per liter
Bassereau P, Sorre B, Lvy A (2014) Bending lipid membranes: experiments after W
SCFAs are capable of crossing the BBB through monocarboxylate transporter 1 (MCT-1), and their concentrations have been detected in human CSF and brain tissues [189,190,191]
The peptide should be reconstituted in bacteriostatic water and stored at 2-8C, with reconstituted solution used within 28-30 days