Ticagrelor is used for:

Reducing the risk of stroke, heart attack, or death in certain patients who have had a heart attack or who have angina (chest pain). It should be used along with aspirin as directed by your doctor. It also may be used for other conditions as determined by your doctor.

Ticagrelor is a platelet aggregation inhibitor. It works by slowing or stopping platelets from sticking to blood vessel walls or injured tissues.