In addition to your pharmacy protocol, you should refer to the pharmacist:
Anyone who has symptoms such as ringing in the ears, dizziness, loss of balance, discharge from the ear, hearing loss, severe or persistent pain, nausea or fever
Babies and children
Anyone with concerns that there is an object in their ear
Customers who have tried products that haven’t been effective
Those affected by other medical conditions (e.g. tinnitus)