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Electrolyte imbalances, particularly hyponatremia or hypokalemia, may accompany dehydration and further contribute to weakness and tiredness
A pharmacokinetic study in rats found that oral administration produced substantial plasma concentrations, with a maximum concentration of 2252 ng/mL and an elimination half-life of approximately 6.9 hours
In some cases, B12 shots are used as an energy booster, since B12 plays a critical role in cellular energy production
James Neubrander, MD METHYLCOBALAMIN (B12) INJECTION INSTRUCTIONS TO BE MADE FROM 25 MG/ML METHYLCOBALAMIN, PRESERVATIVE FREE FORM ONLY
Supplementing with vitamin B12 is particularly common, because deficiency is widespread
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