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Some individuals claim they feel the effects almost immediately, while others may take a few days before any noticeable difference occurs
You can expect an initial test about a week to ten days after you start your injections to see how your body is responding
Nausea High doses of vitamin b1, b6, and b12 injection may lead to the inclination like nausea where person face vomiting issue
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How Quickly Do Vitamin B12 Injections Work
If you intend to supplement vitamin B12, choose a form with methylcobalamin, hydroxocobalamin, adenosylcobalamin, or a combination of these (avoid cyanocobalamin, if possible)
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