Hi, Maria! Just wanted to wish you the best of luck on your upcoming surgery; also wanted to let you know that I get my B-12 at GNC; they are GNC brand, and they cost 6.99 for 30 sublinqual pills. They have a pleasant cherry flavor to them and I only have to take 1 per week as they contain 1000 mcg. of B-12. Take care and God Bless!