Recently a new powder product in the Medical Nutrition range has been developed for elderly to prevent sarcopenia, within Danone known as Spartacus. Sarcopenia is the loss of muscle mass and strength, resulting in immobility and frailty. Current packaging formats might cause usability problems with elderly; therefore a new format has to be designed. The product will be launched as Fortifit under the sub brand Nutricia Advanced Medical Nutrition. Medical nutrition has more stakeholders than fast moving consumer goods: since most of the products are reimbursed, insurance companies and health care authorities are also involved. There are only three main competitors: Nestlé, Fresenius Kabi and Abbott. These all have similar products and packaging formats in their portfolio. The Spartacus project is currently in the clinical trial phase: the composition of the powder has been defined and tasting sessions have been done, and research with elderly now has to show that the product is actually working. Fortifit will however be put on the market before the trial is finished, because competitor Nestlé has recently put a similar product on the market. The powder contains proteins, vitamin D and amino acids, that all help to rebuild muscle fiber, and calcium for bone health. The product is targeted on pre-frail up to frail elderly that are still living independently, something from which sarcopenia might prevent them. The causes of sarcopenia have been researched, as well as other characteristics from elderly, such as ergonomics or the problems they have with different types of packaging formats. The external environment of packaging and medical nutrition has also been analyzed: packaging of other products, trends, patents and law and guidelines. To find out which usability problems occur with the current packaging formats and preparation methods a usability test with elderly has been done. Packaging formats that were tested were can and sachet, both used for medical nutrition, and the eazypack, currently used for baby nutrition, and preparation methods stirring and shaking, of which the latter is also used in the clinical trial. The test focused on three aspects that are involved: opening, dosing and preparation. A lot of problems concerning opening occurred with the eazypack: it was not clear how to open it. Cans and sachets scored better, and also required less force for opening. According to elderly, dosing with a sachet is easier than with a scoop (in cans or eazypacks). Unlike what was expected earlier, shaking turned out to be a comfortable preparation method for elderly. Another advantage is that the product dissolves better using the shaker. The usability test and the analysis resulted in a list of requirements for the development of a “starter kit”: a box with a shaker and four sachets. The design process started with a morphological chart, in which the design was split up into several small aspects for which sketches were made, such as “how can you make something easy to hold?” or “how can you pack a single serve dose?” These sketches lead, in a series of diverging and converging paths, to two concepts for a shaker and three for a single serve sachet. These concepts were tested in a second usability test, to make sure the most user-friendly solution was chosen. Elderly were asked which design they preferred and for what reason. The chosen concepts were optimized on several aspects: usability problems found in the test were solved; dimensions and sealing methods were optimized with the influence of discussions with colleagues, practical tests and the development of the secondary packaging. This resulted in the final design, consisting out of a primary packaging, a shaker and a secondary packaging. The primary packaging is an oblong sachet that is sealed on three sides. The side seal has a precut, indicating where to start tearing. It is made out of printed a paper-PE-aluminium-PE laminate, which is easy to tear. The shaker consists out of three parts: a cup, a cap and a sieve. The cup, which is made out of injection blowmolded PP, a BPA-free plastic that is clear, dishwasher-safe and resistant to aromas, has an indent, that makes is comfortable to hold. It has screw thread on the inside (the cap has it on the outside) so that it is comfortable to drink directly from the shaker. The sieve, which is made out of injection molded SBC, a thermoplastic elastomer, can be inserted in the cap. Since it is clamped in the cap, it is automatically removed when screwing off the cap. The secondary packaging consists out of one shaker and four sachets. It is a printed paperboard box with a separation between the shaker and the sachets and a flip-top cap. It is packed with 10 in a tertiary box of 30x40, which is collomodular and can therefore be palletized very efficiently. Before the packaging concept can be put on the market more development steps are required. Suppliers have to be found for all packaging materials, as well as an external producer with an injection molding and blow molding machine for the shaker. Shelf life tests have to prove the paper laminate has enough barriers to protect the product for a certain period. Pallet tests have to be done to make sure the secondary packaging survives transportation all over the world. A more detailed cost calculation has to be done, to define investment and packaging costs more accurately. Overall, the design combines functionality, user-friendliness and a low cost price. It complies with the wishes and demands that were developed after extensive analysis of the product, the target group and the context.