anti-sickling

adjective

an·​ti-sick·​ling -ˈsik-(ə-)liŋ 

variants also antisickling

: preventing or counteracting the sickling of red blood cells (as in sickle cell anemia)

anti-sickling drugs

When they slipped the gene into blood-making cells of mice with the disease, the anti-sickling hemoglobin made it into 99 percent of the red cells and reversed key symptoms …

—Rachel K. Sobel, U.S. News & World Report