Table 2.

Postoperative vitamin supplementation recommendations differentiated by the specific type of bariatric surgical procedure.

	Adjustable gastric band	Roux-en-Y	Duodenal switch
Vitamin A	Supplementation may be required, monitor	5,000–10,000 IU/d	10,000 IU/d
Vitamin B1	Acute: 100 mg/d × 7–14 d (IM) then 10 mg/d (oral)	Acute:100 mg/d × 7–14 d (IM) then 10 mg/d (oral)	Supplementation may be required, monitor
	Prophylaxis: 50–100 mg/d	Prophylaxis: 50–100 mg/d
Vitamin B12	Supplementation may be required, monitor	300–500 μg/d (oral)	Supplementation might be required, monitor
		1000 mg/q 3 months (IM)
Folate	400 μg/d	400 μg/d	400 μg/d
Iron	Supplementation may be required, monitor	65 mg/twice daily	65 mg/twice daily
Calcium	Supplementation may be required, monitor	1,500–2,000 mg/d	1,800–2,400 mg/d
Vitamin D	Supplementation may be required, monitor	800–1,200 IU/d	2000 IU/d
Vitamin E	Supplement with standard multivitamin formulation rich in vitamin E (60 IU/d)	Supplement with standard multivitamin formulation rich in vitamin E (60 IU/d)	Supplement with standard multivitamin formulation rich in vitamin E (60 IU/d)
Vitamin K	Supplementation may be required, monitor	Supplementation may be required, monitor	300 μg/d
Copper	Oral (1 mg/d) or IV fusion, response variable	Oral (1 mg/d) or IV fusion, response variable	Oral (1 mg/d) or IV fusion, response variable