Immediate emergency care is needed for bladder or bowel dysfunction or rapidly worsening neurological symptoms
For adults running a standard protocol, it's fine, and it's the standard choice
Chandrasekaran P, Weiskirchen R
(If opened and stored properly, the vial can often be used for days or weeks usually up to 28 days until the expiration date, as long as sterility is maintained.) Not a Medication By Itself: Bacteriostatic water has no pharmacological effect other than serving as a vehicle
Regarding the former, transgenic mice that exhibit delayed demyelination and white matter degeneration from a variety of causes (e.g., myelin gene defects, peroxisome-deficient or -synuclein overexpressing oligodendrocytes, or disruption of their gap junctions, to name a few) frequently show a secondary T- and occasionally a concomitant B-lymphocytic inflammation (Ip et al., 2006