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However, results vary depending on baseline vitamin levels, metabolism, and overall health
(If you are a man, you will have difficulty achieving or maintaining an erection.) You will have trouble walking or standing and are at a greater risk of hurting yourself physically
Your environment and life style
Gastrointestinal Symptoms: Common side effects include nausea, vomiting, diarrhea, and abdominal discomfort
You might also have fewer cells in your stomach necessary to absorb B12 if youve had gastrointestinal or weight loss surgery
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