Used to prevent the development of blood clots for those patients suffering from both cardiovascular disease and / or coronary artery disease, Plavix has become quite popular as it provides strong protection from adverse outcomes when taken as part of a comprehensive routine. Plavix works by inhibiting platelet aggregation and is considered one of the very best treatments by medical experts. While taking Plavix, keeping a daily drug dosage journal is critical as doing so can help track progress and increase adherence.