Doptelet and Doptelet Sprinkle (avatrombopag) are prescription medications approved by the U.S. Food and Drug Administration (FDA) to treat low platelet counts in children ages 1 and older with persistent or chronic immune thrombocytopenia (ITP). Platelets are blood cells that help stop bleeding. Avatrombopag is also used to treat adults with chronic ITP for whom a previous treatment did not work well enough.