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It is injected intramuscularly or subcutaneously (deep under the skin), depending on the providers instructions and patient preference
That makes them especially useful for men who dont absorb B12 well from food or pills
Further information You might be interested to check out the following webpages: What every vegan should know about vitamin B12 an Open Letter with detailed information on vitamin B12 endorsed by health professionals
Your body has to convert it before it can be used, and many of the patients who walk in saying Ive taken B12 for years and never felt anything turn out to have been on cyanocobalamin the whole time
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