What affects b12 absorption?

Pernicious anemia, which makes it hard for your body to absorb vitamin B12. Conditions that affect your small intestine, such as Crohn’s disease, celiac disease, bacterial growth, or a parasite. Been taking certain medications that interfere with the absorption of B12.Click to see full answer. Beside this, what affects vitamin b12 absorption?People who have had gastrointestinal surgery, such as weight loss surgery, or who have digestive disorders, such as celiac disease or Crohn’s disease. These conditions can decrease the amount of vitamin B12 that the body can absorb. Some people who eat little or no animal foods such as vegetarians and vegans.One may also ask, what inhibits b12 absorption? Factors inhibiting B12 absorption The antibiotic chloramphenicol (Chloromycetin) Acid reflux meds which are proton pump inhibitors (like Prilosec and Prevacid) Peptic ulcer disease treatment meds that are histamine H2 receptor antagonists (Tagamet, Pepcid, and Zantac) The diabetes drug, Metformin. Accordingly, how can I increase my b12 absorption? To increase the amount of vitamin B12 in your diet, eat more of foods that contain it, such as: Beef, liver, and chicken. Fish and shellfish such as trout, salmon, tuna fish, and clams. Fortified breakfast cereal. Low-fat milk, yogurt, and cheese. Eggs. What medications affect vitamin b12 levels?As summarized in the table provided, vitamin B12 (cobalamin) absorption and utilization by the body can be compromised with the chronic use of certain medications which include: colchicine, chloramphenicol, ethanol, histamine 2 receptor antagonists (H2RA), metformin, and proton pump inhibitors (PPI).