Welcome! My name isXXXXX am a UC Davis graduate, and currently, a Medical Director of a veterinary hospital.
I am sorry to hear about this concern for Pepper.
What you are describing sounds consistent with possible vestibular disease.
The most common symptoms can occur in any combination and include: head tilting, walking in circles, vomiting,
fast eye movements back and forth (nystagmus) or the eyes pinned to one direction (strabismus), and/or drunk-like walkingVestibular Disease in Cats
Generally, vestibular disease is caused by either:
1. Central disease which includes anything within the brain
2. Peripheral disease which includes problems outside the brain like inner ear infections, toxin exposure, organ problems
I cannot rule-out that the ear cleaning didn't cause a ear problem. It has to be a consideration since ear flushing in cats can lead to inner ear complications.
If that was the case, I would be hoping for some improvement over next few days.
The falling over and eye movement, known as nystagmus, are the give aways that this is a vestibular problem.
I would ask the vet if it is okay to try giving some bonine (meclizine) or dramamine for motion sickness.
Please let me know if there is anything I did not cover for you. I hope that information has been helpful.
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