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do b12 injections work better than pills Vitamin vs. Oral Supplements: Which is Better? What Are B12 Injections? And
Description
They both refer to the same thing: injecting vitamin B12 into the body directly via a needle so the body can immediately utilize it

What to avoid Certain combinations should be avoided or approached with extreme caution

10.1210/jc.2009-1579 3 BegleyE.McVeighJ.HopeV.BatesG.GlassR.CampbellJ.et al (2017)
10.1189/jlb.0211069 65

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