can b12 injections cause upset stomach Vitamin Side Effects Stomach: Causes and Management – Bolt Pharmacy Vitamin B12 Side Effects

OM & Ernhrung 124 (2008) F2 F21 2 Ariel Miller, Maya Korem, Ronit Almog, Yanina Galboiz, Vitamin B12, demyelination, remyelination and repair in multiple sclerosis, Journal of the Neurological Sciences, Volume 233, Issues 12, 15 June 2005, Pages 93-97, ISSN 0022-510X, 3 Reynolds EH, Bottiglieri TT, Laundy MM, Crellin RF, Kirker SC

B12 is absorbed well from the fatty layer, so the vitamin reaches the bloodstream either way

The rationale behind combining them is rooted in cellular metabolism

Running a B12 deficitwhich about six percent of Americans under the age of 60and 20 percent of those over 60 do (1)puts you at risk for muscle weakness, fatigue, depression, memory issues, erectile dysfunction, and a cluster of symptoms that can be so severe that theyre debilitating