A typical chewable aspirin dose for chest pain is which total milligrams?

• A. 324 mg
• B. 81 mg
• C. 162 mg
• D. 500 mg

Answer: (A)

In acute chest pain workups, aspirin is given for its fast-acting antiplatelet effect to help prevent further clotting in the coronary arteries. Chewable aspirin is used because chewing speeds up absorption, providing quicker platelet inhibition. The typical total dose is 324 mg, most often given as four 81 mg chewable tablets. This amount provides strong enough platelet inhibition quickly without the excess GI risk associated with larger doses. The smaller 81 mg option is a maintenance daily dose, not the initial therapeutic dose; 162 mg is sometimes used in some protocols but is not the standard total for acute chest pain; 500 mg is unnecessary and increases the chance of side effects.