So in addition aspirin (inhibits platelets) there is
Plavix that reduces the risk of
blood clots, and the usual therapy is to take
Plavix for a year (after a year less risk for clots) and aspirin therapy is continued indifinitely to inhibit platelet formation.
To prevent this, patients have to take two different anti-platelet agents. So, aspirin inhibits platelets, it's a fairly mild drug, and there's another drug we use routinely called Plavixl.