The Effect of a Protective Oral Care Protocol Using Peppermint Oil Mouthwash

In the control group, this group will perform oral care according to the routine clinical oral care procedures applied in the oncology clinic.

Patients in the intervention group will perform a mouth rinse three times daily using 1 mL of peppermint oil diluted in 50 mL of water. The first application will be initiated on the day of chemotherapy, and patients will continue the peppermint oil oral care for six consecutive days (Day 0, Day 1, Day 2, Day 3, Day 4, and Day 5). The peppermint oil oral care protocol is scheduled to be administered at 07:00-08:00, 15:00-16:00, and 22:00-23:00, taking into account the routine timing of antiemetic medication administration in the clinic. The detailed description of the oral care protocol is presented below.