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While no studies have definitively linked them to irregularities, low potassium levels caused by the injections can lead to muscle cramping, fatigue, and an irregular heartbeat
\Mortality Reduction: 1.64.1 fold decreased mortality in elderly populations (Human Study)
What happens when you start taking B12
[27] Additionally, anyone with Lebers hereditary optic neuropathy (a rare inherited eye disease) must avoid cyanocobalamin injections, since B can precipitate rapid worsening of that condition
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