I have not seen this approach posted here before. He wrote the forward to the SCD book and likes to jump start his patients with IV nutrition.
www.drhoffman.com/page.cfm/170"Aggressive nutritional supplementation creates intestinal distress and may deplete the patient's appetite, thereby inadvertently worsening malnutrition. Hence, a strategy of jumpstarting the patient is employed with intravenous nutritional support. In no condition is this support so crucial as in inflammatory bowel disease. An intravenous "cocktail" of amino acids and antioxidants along with L-glutamine and B vitamins and crucial magnesium and trace minerals can be provided several times a week until the patient's GI tract heals. Providing nutrition by vein does not run the risk of causing diarrhea or intestinal irritation."