Which route is used for administering Acetylsalicylic Acid?

Acetylsalicylic Acid, commonly known as Aspirin, is primarily administered through the oral route (PO). This method is widely accepted due to the drug's formulation as a tablet, which allows for convenient swallowing and absorption in the gastrointestinal tract. By taking it orally, the medication can effectively exert its antiplatelet effects as well as its analgesic, antipyretic, and anti-inflammatory properties.

In terms of pharmacokinetics, oral administration enables the drug to be absorbed into the bloodstream gradually, leading to a sustained action. This is particularly useful in conditions requiring long-term management, such as cardiovascular diseases where Aspirin is used for its ability to inhibit platelet aggregation and prevent clot formation.

Other routes like IV or IM are typically reserved for medications that require immediate effects or for patients unable to take medications orally. Similarly, subcutaneous administration is not indicated for Aspirin due to its effective oral absorption and the need for consistent therapeutic levels rather than immediate action.