I have been taking Brilinta (ticagrelor) since Feb 2016, along with metoprolol and atorvastatin. Since March I have been experiencing Restlessness, Irritability, some breathing difficulty, and short 1 second chest pains. Doctors say these are not documented so they dont know why this happens. Initially reducing atorvastatin dose helped reduce these effects, but did not remove these. From July i could not tolerate any statin so is discontinued, but now in Nov i still have these symptoms. What it could be? Doctors had another stress test for me, which was fine, so they say its non-cardiac thing. It disturbs me 2-3 days a week. Could it be side effects of Ticagrelor?