After bariatric surgery, what vitamins should be measured and what supplements should be given?

Clin Endocrinol (Oxf). 2009 Sep;71(3):322-5. doi: 10.1111/j.1365-2265.2009.03564.x. Epub 2009 Feb 25.


Bariatric surgery is the most effective treatment for morbid obesity. Although calorie malabsorption does not occur in most bariatric procedures, micronutrient deficiencies are possible. Multivitamin supplementation is essential following bariatric surgery. The recommendation would be to screen for multivitamin deficiencies prior to surgery and to monitor vitamin levels postoperatively at regular intervals. In this paper, we review the data for screening and supplementation after bariatric procedures for different vitamins.

MeSH terms

  • Bariatric Surgery* / adverse effects
  • Dietary Supplements*
  • Humans
  • Obesity, Morbid / complications
  • Obesity, Morbid / surgery*
  • Postoperative Complications / drug therapy*
  • Postoperative Complications / etiology
  • Vitamins / administration & dosage*


  • Vitamins