Bacteriostatic water itself is the standard diluent used in peptide reconstitution because its 0.9% benzyl alcohol content inhibits bacterial growth across multiple vial entries, which is why its specified over plain sterile water in nearly all peptide handling literature a distinction covered in depth in our guide on bacteriostatic water vs sterile water for peptides
The right option depends on your health profile, current labs, and goals
If it is cloudy, contains particles that will not dissolve, or looks discolored, do not use it
Also, after 28 days, discard any remaining contents
In our review, Koi Peptides was the best overall research-grade source, and you can follow the wider research on the public trials registry
Medical Conditions: Tell your provider if you have Leber's hereditary optic neuropathy, polycythemia vera, or gout, as B12 injections may affect these conditions