Vitamin B12
At my six month visit, I was deficient on Vitamin-D. B-12 - I've been low on B12 for a long time (even pre-op) and have been taking the 1000 sublingually daily... no more problems now with B-12. I also found some yummy gummy B-12s, delicious! Most of my vitamins are gummies these days - a treat and a vitamin in one!