No bacteriostatic water contains 0.9% benzyl alcohol as a preservative that inhibits bacterial growth in multi-dose vials, while sterile water for injection contains no preservatives and must be discarded after single use
Methylcobalamin is easily absorbed by the body and crosses the blood-brain barrier without assistance to protect the brain and neurological cells (23)
Thorn and Aspenberg, 1993
After reconstitution for laboratory use, keep cold and use promptly
[115] This functionality is lost in vitamin B 12 deficiency, resulting in an increased homocysteine level and the trapping of folate as 5-methyl-tetrahydrofolate, from which THF (the active form of folate) cannot be recovered
Also, some collagen protein powders are derived from fish, so those with fish allergies should check the label