b12 injection side effects spots & Acne - Please don' B12 Injection: Uses, How to
Description
Emergency access direct physician contact was available for each patient 24 h per day

You do have to put in a little work of your own and try to be mindful of what you are eating
For most patients without severe malabsorption, sublingual B12 is a reasonable and convenient alternative to injections

Including foods high in vitamin B12 also has athlete-specific performance benefits