I've taken loratadine for my seasonal allergies all my life with no side effects. Last fall, while still symptomatic and several months after my accident, I started my usual course of loratadine to get rid of my runny nose and noticed that it:

1. Eliminated all my dizziness after 2 days;
2. Induced gradual onset of tinnitus, which has persisted until today.

I was pretty happy about it being able to get rid of my dizziness, but stopped taking it immediately when I started having very occasional unilateral tinnitus. Unfortunately, the tinnitus became bilateral and persistent. Did the loratadine cause it? I don't know, but I've not taken it since.

But the loratadine was definitely responsible for alleviating my dizziness, because the dizziness returned after I stopped taking it.