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B12 injections, when administered as recommended, pose a low risk of overdose
Vitamin B12 (1,000-5,000 mcg per mL): either cyanocobalamin (synthetic, stable form) or methylcobalamin (active form)
Over-the-counter labels provide general directions, but diagnosis and treatment of deficiency should be guided by a qualified clinician
It acts as a roborant in cases of stress, overexertion, exhaustion and reduced resistance, and as a tonic in cases of weakness, secondary anaemia and chilling
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