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European Respiratory Journal
Lyophilized stability: Up to 24 months when stored at -20C in a sealed vial protected from light and moisture
Am J Physiol Renal Physiol 298:F557
Protect with Sunscreen Make sure to wear sunscreen even in winter
Some factors that influence how long the shot lasts include: Lifestyle and stress levels Diet and alcohol consumption Existing health conditions (e.g., pernicious anemia, digestive disorders) How quickly your body uses or excretes B12 If your energy starts fading or symptoms return before your next scheduled shot, let your provider know
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