Hi there
A detailed medical and psychiatric history is always needed for every case.And also a detailed mental status examination is also recommended for every case to come for a diagnosis and management accordingly.
Libotryp DS is a combination of Tryptomer (Amitriptyline) and a benzodiazepine. You switched almost similar combination.
Generally vertigo type are unlikely at such dosages, drowsiness can happen.
Without any detailed history, it will be difficult to comment further.
Next Steps
You should take the Geoff a physician or an ENT consultant.