can b12 injection make you sick Managing Post-Injection Nausea and Discomfort Vitamin B12 Injections | Energy
Description
This essential nutrient is crucial for red blood cell production, a healthy nervous system, and DNA synthesis

More than likely the dates are there to cover producers back in case of reaction

Healthy adults require an average intake of 4-7 mcg daily to maintain B 12 status.34 Indications for B 12 treatment, administration routes, and preparations Treatment with B 12 may be required for a variety of reasons (table 1)

Archived from the original on 22 February 2015

Many of the people surveyed would prefer their injections to be overseen by a doctor but felt they had no choice but to self-medicate more frequently to improve their quality of life
