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Semisolid extrusion (SSE) 3D printing is an emerging technology in personalized medicine. To address clinical multi-dose requirements, SSE has been explored to manufacture new preparations. In this study, amlodipine besylate (AMB) was the model drug, and SSE was the pharmaceutical strategy. We developed semisolids suitable for SSE and AMB chewable tablets with six strengths (1.5–5 mg) to meet the needs of 2–16-year-old patients. First, the semisolid extrudability was evaluated by texture analyzer, and then the amounts of carboxymethyl cellulose sodium, sodium starch glycolate, and glycerin were optimized by full factorial design. Then, rheological tests were performed to evaluate the properties of the semisolid and the effect of starch sodium glycolate on printability. Finally, the amount of corrigents was optimized using the electronic tongue. Laboratory amplified semisolids and 3D printed tablets can be stored for a few months, and the whole SSE process had no effect on crystal type. This study validated the feasibility of SSE 3D printing, and tablets with appropriate taste and cartoon appearance can meet or even exceed the traditional preparations. Our study provides a new strategy for multi-dose solid preparations and effectively meet the need for personalized amlodipine medicine.

Feasibility of developing hospital preparation by semisolid extrusion 3D printing: personalized amlodipine besylate chewable tablets