There are a number of health issues that can cause you to feel tired and down
Liu Z, Hu Y, Wang Y, Xu B, Zhao J, Yu Z: Relationship between high dose intake of vitamin B12 and glaucoma: Evidence from NHANES 2005-2008 among United States adults
*Current Urology Reports*, 21(5), 33
Other glutamate salts include: calcium glutamate, magnesium glutamate and monoammonium glutamate. Commercially manufactured glutamate salts are products of microbial fermentation. As with glutamic acid, all glutamate salts are converted to glutamate in our bodies, and all glutamate molecules that enter our bloodstream from the gastrointestinal tract are structurally identical. Bottom line: Regardless of the source , glutamate is glutamate there is no difference between the glutamate in your body that was derived from MSG, hydrolyzed yeast extract, tomatoes or pea protein