should b12 injection be refrigerated vitamin refrigeration Vitamin B12 Injections Specialist in Langhorne, PA Does the b12 need to

The FDA does not review or approve compounded medications for safety or effectiveness

Apart from injections, oral vitamin B12 supplements are also available but are less commonly prescribed for those with pernicious anaemia due to absorption issues

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And what is the shelf life of each bottle after using it for the first time

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Not having enough B12 can lead to anaemia, which means your body does not have enough red blood cells to do the job