When absorbed directly through the gut, as food or tablets, your body will only take on as much B12 as it needs, and the excess will pass through your urine
It controls needle depth, injection speed, and dose measurement automatically

van Beusekom 4 , Rick Dijkhuizen 5 , Bob Roozenbeek 6,7 , Diederik Dippel 6 , Wim Van Zwam 8,9 , Hugo Ten Cate 10,11,12,13 , Henri Spronk 1,11,12,13 , Robert van Oostenbrugge 1,8 , Magdolna Nagy 11,12,14 1 Cardiovascular Research Institute Maastricht, Maastricht, Netherlands, 2 Department of Neurology, Maastricht Medical Center+, Maastricht, Netherlands, 3 Department of Hematology, Erasmus MC Cardiovascular Institute, University Medical Center Rotterdam, Rotterdam, Netherlands, 4 Division of Experimental Cardiology, Department of Cardiology, Erasmus MC Cardiovascular Institute, University Medical Center Rotterdam, Rotterdam, Netherlands, 5 Translational Neuroimaging Group, Center for Image Sciences, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands, 6 Department of Neurology, Erasmus MC University Medical Center, Rotterdam, Netherlands, 7 Department of Radiology and Nuclear Medicine, Erasmus MC University Medical Center, Rotterdam, Netherlands, 8 Department of Neurology, Maastricht University Medical Center+, Maastricht, Netherlands, 9 Department of Radiology and Nuclear Medicine, Maastricht University Medical Center+, Maastricht, Netherlands, 10 Cardiovascular Research Institute Maastricht (CARIM), Maastricht University, Maastricht, Netherlands, 11 Department of Biochemistry, Maastricht University, Maastricht, Netherlands, 12 Thrombosis Expertise Center, Heart & Vascular Center, Maastricht University Medical Center+, Maastricht, Netherlands, 13 Department of Internal Medicine, Maastricht University Medical Center+, Maastricht, Netherlands, 14 Cardiovascular Research Institute Maastricht, Department of Biochemistry, Maastricht University, Thrombosis Expertise Center, Heart & Vascular Center, Maastricht University Medical Center+, Maastricht, Netherlands Background and Aims: Administration of periprocedural antithrombotics (unfractionated heparin (UFH), aspirin (ASA), or a combination (UFH+ASA) may reduce thrombotic complications and microvascular occlusions which both might interfere with outcome after endovascular treatment (EVT)

B12 injections at a Glance Consultation Required