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Pharmaceutical preparations of vitamin B 12 may be given by intramuscular injection
Too much or too little of certain hormones, especially cortisol and thyroid hormones, can change the excitability of your nerves (and therefore, your muscles)
Repeated freeze-thaw cycling should be avoided
Deficiencies can occur with medical conditions such as atrophic gastritis (which causes thinning of the stomach lining), pernicious anaemia, Crohns disease, celiac disease, lupus, or other immune system disorders and certain medications
Careful use under medical supervision is essential to minimize risks.
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