l cysteine and glutathione L-Cysteine-glutathione disulfide Glutathione, Cysteine and C |

Vitamin B12 Medicine Interactions Chloramphenicol: bacteriostatic antibiotic can interfere with red blood cell response to supplemental Vit B12 Proton pump inhibitors: omeprazole and lansoprazole, etc., slow gastric acid release and may interfere with VIt B12 absorption from food H2-receptor antagonists: cimetidine, famotidine and ranitidine slow the release of hydrochloric acid into the stomach and interfere with Vitamin B12 absorption from food Metformin: might reduce absorption of Vitamin B12 due to altered intestinal motility, increased bacterial overgrowth, etc

and is useful in some cases of allergies by virtue of its ability to reduce histamine release

Blood thinners like warfarin should not be adjusted on your own while you are on doxycycline

Fish: Sardines, salmon, and other fish are excellent sources of B12