I have listed a few links on the nutritional guidelines for those of us who have had WLS. Of coarse, work with your doctor as a team.
http://www.hopkinsbayview.org/bariatrics/docs/nutrition_bypass.pdf
http://www.celebratevitamins.com/
http://www.vitalady.com
http://www.kaysbariatric.com/shopping/
http://www.bariatricadvantage.com/catalog
http://www.bbvitamins.com/
http://www.bariatriceating.com/
http://www.syrup2u.com