does b12 injections keep you awake Why do I feel worse after a injection? Best B12 Shots in Chicago

Sarasota Convenient wellness injection options for guests near Clark Road, Palmer Ranch, Gulf Gate, Siesta Key, and central Sarasota

[2] However, elevated MMA is not conclusive, as it is seen in people with B 12 deficiency, but also in elderly people who have renal insufficiency, [28] and elevated homocysteine is not conclusive, as it is also seen in people with folate deficiency

In summary, the fact that NNMT plays a role in a number of diseases/conditions makes development of NNMT inhibitors an important path to developing therapeutics to treat various diseases/conditions

Vitamin B12 is best injected intramuscularly into the deltoid (upper arm), thigh, or gluteal muscle (buttocks)

Conclusion To answer the original question directly: high B12 levels themselves don't typically cause symptoms