how long for b12 injection to be effective Vitamin Injections: What You Need Know How Long Do Vitamin B12

In rare cases, high doses of B12 might exacerbate anxiety symptoms due to fluctuations in energy levels

Contraindications Vitamin B12 injection is contraindicated in pregnant and lactating women, liver disease, kidney disease, infection, iron deficiency, folic acid deficiency, the patient undergoing treatment that has a direct effect on bone marrow, an allergy to medication, vitamin, preservative or cobalt

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[4] [12] After injection, dispose of the used syringe and needle in a sharps container

Levels below 200 pg per mL typically indicate deficiency, though symptoms may appear at slightly higher levels in some individuals