Keep vials upright, protected from light (wrap in aluminum foil or use amber vials if available), and away from the freezer compartment
These include: Neurological symptoms : tingling or numbness in hands and feet (paraesthesia), difficulty walking, balance problems, memory difficulties, or mood changes Haematological signs : ongoing fatigue, weakness, pale skin, or shortness of breath suggesting anaemia hasn't resolved Glossitis : a sore, red tongue that hasn't improved Cognitive issues : continued difficulty concentrating or memory problems These symptoms, particularly progressive neurological deficits or severe anaemia with cardiorespiratory compromise, may require urgent medical attention
PMID 31316992
McKnelly, K., Sokol, W., & Nowick, J
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