This is because they dont need to be digested, which avoids the risk of low absorption
Also, injections are not typically recommended for people without a vitamin B12 deficiency
For example, a study published in 2020 found that a multivitamin containing B vitamins didnt show a statistically significant association with reduced risk of hangover symptoms in its sample
This can lead to tiredness, weakness, and shakiness, as well as mood changes
Read More: 17 of the Best Hangover Cures and Remedies Grant Chu, MD, MS, MBA, FACP Medical Reviewer Grant Chu, MD, is an associate clinical professor at the David Geffen School of Medicine at UCLA
Summary Vitamin B12 injections can be an effective way of treating a deficiency