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Contents: 5-Amino-1-Methylquinolinium

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However, its been found that oral B12 supplementation when taken in high doses can have similar protective effects

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Can You Have Too Much B12

Despite this, cyanocobalamin has been increasingly criticised in recent years, due to the following reasons: Toxicity: cyanocobalamin is often claimed to be toxic, as the cyano group form the poison cyanide