Hello,
Is there any history of trauma?
Do you have any high Blood pressure problems?
Vertigo while changing in the position might require a proper assessment through Ent & vertigo specialist Consultant nearby.
It might be a Positional Changing vertigo also called BPPV.
Taking Tab vertin will only suppress the vertigo, it will not cure the vertigo.
Most often for this you will require a maneuver to be diagnosed and also maneuver to get is resolve.
Next Steps
Better is to visit a nearby Ent clinic for proper guidance and treatment.
Health Tips
Avoid Tablet vertin at least for 24 hours, if you are planning to Visit a nearby ENT clinic.