Why Bayer aspirin tablet 325mg yet tablets weight 445mg?

The weight difference between the Bayer aspirin tablet and its actual dosage can be attributed to the presence of other inactive ingredients and fillers in the tablet. While the active ingredient, which is aspirin in this case, makes up a portion of the tablet's weight, there are also other substances added for various purposes such as binding agents, coatings, and fillers. These additional ingredients contribute to the overall weight of the tablet, resulting in a weight that is higher than the dosage of the active ingredient alone.