Bariatric Surgery
Published
August 8, 2026
18
4800

Bariatric Vitamins & Supplements: Complete Protocol by Procedure

Bariatric surgery permanently changes nutrient absorption. This guide provides the complete vitamin protocol for sleeve, bypass, SADI‑S, and duodenal switch — including doses, timing, lab monitoring, deficiency symptoms, and when to increase supplementation.
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Quick Answer

All bariatric patients need a bariatric multivitamin, calcium citrate, vitamin D, and B12. Bypass, SADI‑S, and DS patients require higher doses, iron, ADEK vitamins, and more frequent labs. Deficiencies are common but preventable with strict adherence.

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Article

Published Date: 
2026-09-12 21:33
Word Count: 
4800
Estimated Read Time: 
18

Obesity By The Numbers

Key statistics that highlight the growing impact of obesity.

Bariatric surgery reduces stomach acid, intrinsic factor, duodenal absorption, jejunal absorption, and fat-soluble vitamin uptake. Supplementation prevents anemia, neuropathy, bone loss, and metabolic complications.

Medical Topics Covered

This article covers the following medical topics and related areas.
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Nestor de la Cruz-Muñoz, MD, FACS, DABOM
About the Author
Nestor de la Cruz‑Muñoz, MD, FACS, DABOM
Dr. Nestor de la Cruz‑Muñoz is a nationally recognized bariatric, metabolic, and foregut surgeon with more than 20 years of experience treating complex obesity‑related and gastrointestinal conditions. He serves as the Medical Director of Bariatric and Metabolic Surgery at HCA Florida Mercy Hospital and has held academic appointments as a Professor of Surgery at a major university‑based medical center.

Dr. de la Cruz‑Muñoz specializes in advanced minimally invasive and robotic surgery, metabolic disease management, and comprehensive long‑term patient care. His work integrates clinical expertise, academic leadership, and a commitment to evidence‑based medicine. He has trained surgeons across the country, contributed to national guidelines, and is widely regarded for his outcomes, innovation, and patient‑centered approach.

Patients choose Dr. de la Cruz‑Muñoz for his combination of surgical excellence, metabolic expertise, and lifelong dedication to improving patient health through compassionate, high‑quality care.
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