While simply adjusting vitamin levels by increasing intake of the foods or supplements you need can help alleviate symptoms, including fatigue, a clinical diagnosis of B12 deficiency is necessary to get the shots
At OmniSpine Pain Management, vitamin B12 injections are used to help support patients experiencing fatigue, low energy, or nerve-related symptoms by delivering the vitamin directly into the bloodstream for better absorption than oral supplements
Vitamin injections may be beneficial for people who have difficulty absorbing or tolerating oral supplements, experience digestive concerns or do not consistently receive enough essential nutrients through their diet
The practical takeaway was that Hospira remained fairly stable for 0-90 days, but by 120 days the benzyl alcohol level had noticeably declined to around 0.71%, roughly a 25% reduction from baseline
Washington, D.C.: National Academy Press.