Opened bac water usually follows a 28-day window unless the label states another period, and that opened-vial window never extends beyond the original expiry
Since the body cannot produce vitamin B12 on its own, it must be obtained through diet or supplements
NHS approach to B12 deficiency: NICE Clinical Knowledge Summaries recommend investigating B12 deficiency in patients presenting with macrocytic anaemia, unexplained neurological symptoms, or risk factors including pernicious anaemia, gastrectomy, malabsorption disorders, metformin use, proton pump inhibitors, or nitrous oxide exposure
Any change should be agreed with the clinician or GP managing your care
Instead of relying on oral supplements that may not absorb properly, B12 injections deliver nutrients directly into your system for better results
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