OPTIFAST Post Bariatric Very High Protein Drink and OPTIFAST Post Bariatric Chewable Vitamin and Mineral Supplements are formulated for use after bariatric surgery. OPTIFAST Post Bariatric Drink provides 12 g of protein per 4 fl oz serving and OPTIFAST Post Bariatric Chewable Vitamin and Mineral Supplement provides amount of nutrients required after weight loss surgery and calcium citrate--the recommended form of calcium.