Goodness, my supplementation regime may sound a bit crazy to you.
Morning: multivitamin, Vitamin D3, Vitamin A, Vitamin E, Calcium Citrate (never carbonate), B12, Stool Softener, Probiotic
Midmorning: Calcium Citrate
Midafternoon: Calcium Citrate, multivitamin
Evening: Vitamin C, Iron, Stool Softener, Probiotic
My RNY is considered a distal (more malabsorption than a typical RNY procedure) and my regime is based on my lab results. Already at 11 months I am seeing deficiencies in iron and protein. However, for most RNY patients, the ASMBS recommends the following daily: 2 multivitamins, 1500-2000mg Calcium Citrate (broken up in 500-600mg doses), 18-27mg iron for menstruating women, and 500mg B12 at least once a week. Calcium and iron can not be taken within 2 hours of each other and vitamins should be "dry," not suspended in oil.
Edited to add: This link has helped me tremendously with supplementation:
http://www.pamtremble.com/wp-content...Guidelines.pdf