Thanks for using Healthcaremagic,
After going through the available details the medicine you have taken may contribute to nausea and dizziness
as they may cause drowsiness
as well as gastritis
Please do not take any medicine without consulting Physician. It is possible to get common sore throat
along with dizziness as blockage to tube connecting throat and ear.
Please visit an ENT surgeon and get examined and treatment would require antibiotics,analgesics, and decongestants.
Even steam inhalation and warm saline gargles help. if gastritis is an issue antacids and PPI like Omeprazole
may be given.
Hope this information helps.
Wish you good Health.
Dr.Akhilesh Dubey M.D