With anything on the Vitalady list, you follow your own lab work post op. I was 4 months out before I got on the full list but by then, I had a 3 month post op lab in hand so I followed it. I started with one A a day. By the end of that year, I had dropped it completely and was 6 years out before needing it again. At 11 years out, I take one 25,000 a week to maintain my current midrange level.
Yes, it’s a heavy start but it assumes most of us, like most people in general, are woefully deficient in most vitamins. Just because we were morbidly obese, did not mean we absorbed the vitamins we needed.