I'm not a doctor, and this may have been tried, but if your vertigo is due to otolith migration and is "positional" - it gets worse w/certain tilts of your nugget, try this a couple times a day for 4-6 weeks. It worked for "a buddy" after an accident w/cranium trauma a while back.

The Epley Maneuver: A Possible Cure for Vertigo? (Figure), THE MERCK MANUAL OF HEALTH & AGING