Vitamin B12 injections can be very beneficial! , 1. Boosts Energy and Reduces Fatigue, B12 helps your body convert food into energy at the cellular level. Low B12 can cause tiredness, weakness, and The Link Between Lipo B12 Injections and Weight Loss Primary Care Physicians & Internal Medicine located in Clayton, GA Life Point Medical, LLC 10 B12 WEEKLY SHOTS Just Lose Weight High dose vitamin B12 supplements can sometimes cause side effects, including headache, nausea, vomiting, mild diarrhea, itching, skin rash, tiredness, weakness, or tingling in the hands and feet. OC: Lipotropic & B12 Injection Therapy in College Park, MD Right Weight Center