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There is some evidence that the diabetes drug metformin (Glucophage) may reduce vitamin B12 absorption when used for several years

[220] Several studies have assessed a relationship between 5-hydroxytryptamine (serotonin) 2A receptor (5-HTR2A) gene polymorphisms with an increased risk of suicidal behavior

Do I need a blood test before my B12 injection

(2006) reviewed the extensive preclinical literature on oral BPC-157 administration in gastrointestinal models

The finding of low plasma sulfate is also consistent with a large study that found high sulfate in the urine of children with autism [41], as sulfate wasting in the urine partly explains low levels in the plasma