Hi & Welcome.
Both these medications work as " blood thinners" and are given to patients suffering from Atrial
fibrillation to prevent blood clot formation or to treat an existing blood clot and hence to reduce the risk of stroke and systemic
embolism.
However, they differ in their mechanisms of action.
1. Eliquis (
Apixaban) is an anticlotting drug which acts by inhibiting Factor Xa that inhibits platelet activation and thus prevent clot formation. It is more potent than Aspirin in preventing clot formation.
2. Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) is also an antiplatelet medication but it acts by inhibiting cyclooxygenase enzyme. Which in turn inhibits platelet generation of thromboxane A2, resulting in an antiplatelet effect.
3. Taking Eliquis along with Aspirin may increase the risk of bleeding, including severe and sometimes fatal hemorrhage causing
brain hemorrhage, red or black, tarry stools; coughing up or
vomiting fresh or dried blood that looks like coffee grounds, etc.
Hope these answer your query.