syringe needle for vitamin b12 injections Red Liquid in a Disposable with a and in a Glass Ampoule on a White Background. Stock Image 151 Vitamin B12 Injection Stock

Why you must never take vitamin B12 supplement at night Vitamin B12 plays an important role in maintaining the health of your nervous system and red blood cells, said Dr Aniket Mule, consultant internal medicine, Wockhardt Hospitals, Mira Road Often, we fail to follow the dos and donts when it comes to foods and medicines simply because there is so much to remember

However, there have been cases of people breaking out into acne and rosacea and having heart palpitations after taking very high doses of vitamin B12, usually by injection

Injectable: tenderness , swelling , bruising at the site, occasional mild flushing or transient fatigue

Because levels are often quite low before a deficiency is recognized, it can take some time for serum concentrations to even out and symptoms to subside

Fatigue: Some participants reported fatigue or tiredness during treatment periods

It took a while to figure out what was going on, but when they reduced her B12 dose to 250mcg three times a week and had her take it in the late morning (when kidneys work best), her symptoms improved and her kidney function stabilized