b12 injection insomnia can vitamin injections cause Association of Levels with Sleep Quality, Insomnia, and Sleepiness in Adult Primary Healthcare Users in Greece What are the side effects – Can too much vitamin B12

More clinical research should investigate the effectiveness across different patient conditions, but the existing evidence suggests the treatments are generally safe, well tolerated, and worth trying for those struggling with chronic pain or steroid side effects

Diet-related If your vitamin B12 deficiency is caused by a lack of the vitamin in your diet, you may be prescribed vitamin B12 tablets to take every day between meals

The mechanism of this effect has been debated (252

Megaloblastic anemia due to vitamin B12 deficiency A fast heart rate may be a symptom of vitamin B12 deficiency

However, taking them together isnt likely to bring any negative side effects

If your B12 is elevated and youre not supplementing, see your doctor