what is best b12 injection or tablets Methylcobalamin (Vitamin B12) B12 Injections vs Oral Supplements:

Some people may also experience more serious side effects, such as pancreatitis (inflammation of the pancreas) and thyroid tumors

PMID 35013352

Check out the table below to further understand what vitamins and supplements should not be taken together: Supplement and Medication Combinations to Avoid Calcium and Thyroid Medications Calcium can interfere with how the body absorbs thyroid medications, making your medicine less effective

Rate of administration Dose and volume of drug administered Evidence the line was flushed when complete Amount of drug wasted/discarded (modifier JW) One thing to remember is that services leading up to and following an infusion are included, or bundled, in that service such as flushing the line