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Table of Contents Why Vitamin B12 Deficiency Can Occur After Gastric Banding How Gastric Banding Affects Vitamin B12 Absorption Recommended Dosage and Frequency After Bariatric Surgery Signs Your B12 Levels May Need Monitoring Long-Term Nutritional Follow-Up After Gastric Banding Scientific References Frequently Asked Questions Why Vitamin B12 Deficiency Can Occur After Gastric Banding B12 deficiency after gastric banding is primarily caused by reduced tolerance of B12-rich foods and use of acid-suppressing medicines

People who have had allergic reactions to cobalt or cobalamin (the form of B12 in injections) should avoid them

Weight Regulation 3

Injectable or sublingual B12 bypasses gastric absorption, making it ideal for GLP-1 users whose stomach emptying is slowed