Excipients and fillers are listed as “non-medicinal ingredients” on supplement bottle. They are listed in descending order from the most use to the least used within a given product. It is required by law that all supplement list non-medicinal ingredients. This law however, does not hold true in the pharmaceutical world. Drug companies are not required to list the non-medicinal ingredients on dispensing labels. The pharmacist is given a list of the “non-medicinal ingredients”
The pharmacist is given a list of the “non-medicinal ingredients” within each pharmaceutical. Therefore, in order to determine the excipients and fillers used in a particular medication it is up to patients to speak to their pharmacist.
I called a pharmacist at some pharmacy and they told me if you want to know the inactive ingredients in a prescription medicine then you need to ask the manufacturers name for the medicine at the pharmacy then look up that medicine online on that manufacturers website
Pharmacies can switch manufacturers for the same prescription medicine which may change inactive ingredients
For over the counter medicine I believe it is simpky listed on the package but I could be wrong