Many teens have low iron, B12 levels years after bariatric surgery Bariatric patients often need to take their Vitamin B12 in a sublingual (under the tongue) form, or injections or nasal spray form, because the surgery alters the stomach's ability to produce the Sleeve Gastrectomy Gastric Sleeve Advance Surgical Perth Vitamin B12 Absorption Following Bariatric Surgery Celebrate Celebrate Vitamins B12 Injections for Energy: Benefits and How It Works AZ IV Medics It sucks when you eat right but still end up with an iron deficiency. Or what about being a gastric bypass patient and needing vitamin B12 shots for the rest of your