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A sterile environment is also non-negotiable
Ankar A, Kumar A
It is not intended to diagnose, treat, cure or prevent any disease
Biochemical Pharmacology (2018) 2
Understanding Vitamin B12 Deficiency Vitamin B12 deficiency occurs when your body lacks enough of this essential nutrient, leading to symptoms like: Persistent fatigue Weakness and lightheadedness Numbness or tingling in hands and feet Memory problems and difficulty concentrating Mood changes, including irritability and depression Certain factors increase your risk, such as age, certain medications, digestive conditions, and restrictive diets
You may feel a slight pull on the syringe when you first puncture the stopper
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