It is advised that you consult your doctor and make sure that the right supplement is being taken
One exception is our poor understanding of the nature and existence of what has been referred to as the high-folatelow-vitamin B-12 interaction

Storage & stability How long it lasts, both before and after reconstitution The stability of bacteriostatic water and the reconstituted solution depends on the phase you are in: Unopened vial of bacteriostatic water: Store at room temperature, protected from direct light Shelf life according to the date on the packaging (typically months to years) Peptide reconstituted with bacteriostatic water: Store at 28 C (a standard refrigerator), protected from light Use within 14 to 30 days depending on the specific peptide More sensitive peptides (for example LL-37 or SS-31 ) may have shorter stability, follow the documentation for the given peptide Peptide reconstituted with sterile water without preservative: Substantially shorter shelf life, typically up to 7 days , since protection against microbial growth is absent Practical storage rules Let the vial warm to room temperature before opening (1520 min)
Its a conservative, reasonable default
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Round to the nearest half or whole unit you can read reliably, or reconstitute with a different amount of water so the dose lands on an easier mark