I've been having problems with dizziness and vertigo recently. My doctor told me to use bonine (meclizine) as a temporary solution. The chewables came as 25mg but I cut them with a knife along the line and took ~12.5mg as recommended.
Meclizine works pretty well for dizziness / vertego. Side effects weren't that bad and were tolerated better on latter doses. Initially I felt kind of tired and latter a little sedated. It also made the vertigo a little worse during the first 30 minutes.
I'm on a prescription anti-histamine now that works a lot better but for a temporary fix for vertigo or dizziness OTC meclizine works. The box probably won't say vertigo -- it's marketed for sea sickness or car rides. I also take them differently for vertigo -- as needed up to 100mg/day instead of the instructed 25mg once daily.