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List of Vitamins That Gastric Bypass Patients Should Take

By Renee Peterson ; Updated July 18, 2017

Gastric bypass is a form of weight loss, or bariatric, surgery. In the procedure, the patient's stomach is essentially recreated into a much smaller pouch, thereby allowing a much smaller amount of food to be ingested. Additionally, part of the small intestine is attached to the new stomach pouch. One of the results is a lower absorption of nutrients. Therefore, in order to make up for the reduction in food and nutrient intake, gastric bypass patients should take vitamins to supplement their diet.

Vitamin D

Vitamin D is essential to help the body absorb calcium. According to a study reported in the "Journal of Clinical Endocrinology & Metabolism" in July 2008, one year after having gastric bypass, a group of patients were found to have had major decreases in bone density. Adequate amounts of calcium are required to build and maintain strong bones.

Thiamine/Vitamin B1

In a report published in “The Lancet” in October 2008, the case of a woman who had undergone gastric bypass surgery was cited. About two months after surgery, she was vomiting and extremely dizzy. After a series of tests, they all indicated that the patient had a severe vitamin B1 (or thiamine) deficiency. The woman acknowledged that she had not been taking the recommended dose of vitamins that she’d been given. Accordingly, B1 is essential.

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Multivitamin

Patients who have undergone gastric bypass surgery are required to take a multivitamin for the rest of their lives, according to the Medical University of South Carolina. It is crucial that the multivitamin contain Vitamins A, D and E, as well as folate.

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