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An IV infusion bypasses the gut entirely, delivering B12 alongside hydration and supportive vitamins like vitamin C and zinc directly into the bloodstream
Since there is no known hazardous threshold for vitamin B12, there is no upper limit
Thomas A, Grgens C, Guddat S, et al
In some cases, this applies to reduced calorie intake
Cyanocobalamin is more commonly found in oral supplements and fortified foods, and while it is effective for many people, some practitioners prefer hydroxocobalamin for injections due to its natural form and longer retention
This is where personalized dosing comes in
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