can b12 injection cause dizziness Vitamin Injections: What You Need To Know Feeling worse after B12 Injection:
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Most bruises from minor injuries heal on their own in a week or two

With oral vitamins it can take days or weeks of daily dosing to build up the same effect

However, no controlled human trial has compared oral versus injectable AOD-9604 at equivalent systemic doses

There is insufficient information to determine whether shorter infusion periods are not associated with these findings
