Serisone is a medical drug applied via injector. It can “prevent fluid buildup in lungs” and is carried in standard Colonial Fleet medical kits (Scattered). This drug is most likely named to be sound similar to real anti-inflammatory corticosteroids like Prednisone. Based on the description of its action, Serisone is most likely similar to Lasix (furosemide), a high ceiling loop diuretic used to draw fluid from the lungs.