Total parenteral nutrition (TPN) therapy has advanced significantly during the recent half a century, from single bottle therapy to the combined therapy including macronutrients and micronutrients. The purposes of 3-chamber bag development are to reduce the restriction of total nutrient admixture, and increase the accessibility of therapy. This is also based on trial and errors during R&D activities, and the clinical experiences at the hospital compounding centers. The 3-chamber bag started with concerns regarding the mixture of fat and glucose and amino acids, but up to the present, it is used widely with clinical experience of more than 15 years. Therefore, it might be reasonable to ensure that its efficacy and safety is confirmed. The physicians have reported that it contributes to the convenient and efficient nutrition therapy, allowing enhanced patient compliance and convenience at hospital. In addition, depending on the further R&D works, 3-chamber bags are expected to advance further, opening a new landscape for advanced nutrition therapy.

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