As a general rule: Safe usage window: Up to 28 days after the first puncture Label the vial: Write the opening date on the label Refrigeration: Not required but storing in a cool, dry place is recommended Need help with preparation
However, if left untreated, it can progress and cause: Chronic fatigue and overall weakness Dizziness Pale or yellowish skin tone Mental health problems such as depression, mood swings, irritability, and anxiety Loss of appetite, nausea, and diarrhea, leading to weigh loss Paresthesia: numbness, tingling or burning sensation in feet, legs, and hands Vision problems Vitamin B12 is an essential nutrient, meaning everyone should get it either from food or supplements
Conditions like pernicious anemia, for instance, require ongoing B12 injections for life due to a fundamental absorption issue
Consult specific drug guidelines