pernicious anemia is treated with injections of vitamin b12 because (Rare Cause Deficiency) How Is Pernicious Anemia Treated?
Description
doi: 10.1016/s0005-2736(98)00232-6

However, you may have temporary soreness or numbness at the injection site.The most common side effects are temporary pain and numbness at the injection site

The NICE guideline recommends that doctors first use one of the primary tests for B12

Effects of Vitamin B Complex and Vitamin C on Human Skin Cells: Is the Perceived Effect Measurable

Within- and between-group comparisons for the secondary outcomes of the study are shown in Table 4
