What is the duration of effect for Acetylsalicylic Acid?

What is the duration of effect for Acetylsalicylic Acid?

• A. 1-4 hours
• B. 5-8 hours
• C. 12-24 hours
• D. 24-48 hours

Answer: (A)

Acetylsalicylic Acid, commonly known as aspirin, has a duration of effect typically ranging from 1 to 4 hours for antipyretic and analgesic effects. This timeframe is due to the rapid metabolism and elimination of the drug from the body. Aspirin is known for its ability to inhibit platelet aggregation, and while this effect can last much longer — up to several days due to the irreversible inhibition of the COX enzyme in platelets — the acute effects felt for fever or pain relief occur within the shorter time frame. The other options provided indicate a duration that exceeds the known pharmacokinetic profile for aspirin's immediate actions. Therefore, the 1 to 4 hours range correctly reflects the duration for which the drug exerts its acute effects.

Acetylsalicylic Acid, commonly known as aspirin, has a duration of effect typically ranging from 1 to 4 hours for antipyretic and analgesic effects. This timeframe is due to the rapid metabolism and elimination of the drug from the body. Aspirin is known for its ability to inhibit platelet aggregation, and while this effect can last much longer — up to several days due to the irreversible inhibition of the COX enzyme in platelets — the acute effects felt for fever or pain relief occur within the shorter time frame.

The other options provided indicate a duration that exceeds the known pharmacokinetic profile for aspirin's immediate actions. Therefore, the 1 to 4 hours range correctly reflects the duration for which the drug exerts its acute effects.