A Milk Protein-Based Powder Made with Medium Chain Triglycerides for Adults and Children. Portagen is a nutritional powder for children and adults with defects in the intraluminal hydrolysis of fat ; defective mucosal fat absorption ; and/or defective lymphatic transport of fat . Portagen is not recommended for use as an infant formula. Long-Term Usage Portagen powder is not nutritionally complete. I f used long term, supplementation of essential fatty acids and ultra-trace minerals should be considered. Product Features: 87% of fat from medium-chain triglycerides Corn oil provides linoleic acid Information current as of June 24, 2010. If you have a question, we are here for you. Call us toll free: 1-800-BABY123, 8am to 4:30pm Monday-Saturday, Central Time. Or visit enfamilprofessional.com.