Keep records of storage conditions, especially if you experience unexpected variability in medication response
Oncotarget 6 , 592603 (2014)
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
i Also, it has been reported that acetaminophen poisoning is involved in nearly 50% of patients in the U.S
However, severe, persistent headaches lasting more than one week, headaches accompanied by vision changes or neurological symptoms, or headaches that worsen with continued dosing warrant immediate provider evaluation to rule out serious underlying conditions and assess medication continuation