are b12 injections painful

Get Reimbursed for Administration of Injection (CPT 96372) Size:100 mg IV in https://i.ytimg.com/vi/V5xVjJ2ju3o/sddefault.jpg A person with Crohn’s disease may have trouble absorbing certain vitamins, such as vitamin B12, if they have undergone the removal of part or all of the ileum or if the disease affects their ileum

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