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B12 has been shown to help improve the nervous system functions
But if it were to occur, you could experience throat swelling, an itchy body rash, dangerously low blood pressure, or symptoms associated with anaphylaxis (throat swelling, trouble breathing)
Diagnosis usually entails measuring serum levels of vitamin B12 or identifying elevated levels of methylmalonic acid and homocysteine
Concentration(s) Oral: 50mg, 100mg capsules
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