Vitamin Supplement Recommendations

Note: These are general recommendations. Other dietitians, bariatric programs, and professional societies may have varied recommendations.

Gastric Bypass

Choose a multivitamin that is specific to bariatric surgery patients. Our dietician can help determine which brands are acceptable and popular. In general, we recommend 200%RDA with the edition of:

  • Calcium-citrate 1200-1500 MG and vitamin D to 2000 IU daily
  • Elemental iron 45 MG daily
  • B12 500 mcg daily

Please see for recent updates to bariatric vitamin supplementation. Be aware that some operations or patients’ medical condition may require different amounts.