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Common injection sites include the abdominal area (at least 2 inches from the navel), thighs, or back of the upper arms
Seek urgent care for trouble breathing, facial or throat swelling, severe rash, chest tightness, or fainting
Always check packaging integrity before use cracked vials or damaged seals should not be used
This is particularly important if you are part of any of the groups considered to be at high risk of B12 deficiency, including alcoholics, smokers, those on diabetes drugs, adults over 65, those with gastrointestinal disorders and those who have had surgery relating to the digestive tract
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