Final answer:
The term indicating the use of medicated tampons is 'vaginal instillation,' used to deliver medications directly to treat vaginal infections such as yeast or bacterial infections.
Step-by-step explanation:
The term vaginal instillation refers to the use of tampons that are treated with medication. This method is used for delivering medicated creams or gels directly into the vagina to treat local conditions such as infections.
For instance, yeast infections are commonly treated with antifungal medications that may come in the form of creams or tablets inserted into the vagina. Medication for bacterial vaginal infections typically involves the use of antibiotics, which can also be applied as a topical cream or taken orally.