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Insulated containers with ice packs can provide temporary refrigeration, but care must be taken to prevent freezing
Left untreated, a severe deficiency can cause permanent nerve damage
Only a medical evaluation can determine whether it is an overdose, a metabolic change, or another health issue
Quick math example A 10 mg vial mixed with 2 mL gives 5 mg/mL
If you don't eat animal products, you can change your diet to include vitamin B12-fortified breads and cereals or B12 supplements
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