vitamin B-12

what is the recomended amount for B-12 ?

The daily RDI is 2-4 mcg Since absorption is so diminished with most WLS, the daily dose recommendation may range from 350-600 mcg per day.  Oral supplements - either chewable, liquid or sub-lingual are 350 mcg/day or more.  For the nasal spray it is 500 mcg weekly.  For the intramuscular injection it is typically 1000 mcg per month. Folate should always be supplemented in conjunction with B12.  I suggest 400 mcg per day of folate as well.