side effect of b12 injections Shot Guide: Benefits, Dosage & Effects Vitamin B12 Injection - Byrons
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If its all about antioxidants, cant you just treat recurring canker sores by eating a plant-based diet high in fruits and vegetables

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This other pathway requires B 6 and results in production of cystathionine, followed by cysteine, which can be used to make the powerful antioxidant glutathione

Freezing can cause the vitamin B12 molecules to break down, altering its effectiveness and making it unsafe for use
