Bariatric Advantage Ultra Solo is a once-per-day multivitamin specifically formulated to meet the micronutrient needs of gastric bypass and sleeve gastrectomy patients. It contains 25 mg of thiamin, 3,000 IU of vitamin D from cholecalciferol, and 500 mcg of vitamin B12 from methylcobalamin. This product is designed to help meet the nutritional needs of bariatric patients with a focus on bioavailability. The capsules are of vegetarian origin and are chlorophyllin-colored. This version does not contain iron.