For your information... Anti-platelet medication

There are several commonly used anti-platelet medications that are used in medical practice but for the purposes of MRCS I suggest learning about 2.

Aspirin
Inhibits the production of thromboxane A2, which then prevents further platelet aggregation at the site of a platelet plug.

Clopidogrel (Plavix)
Irreversibly inhibits an ADP chemoreceptor on platelets, also preventing further platelet aggregation at the site of a platelet plug.