Hi Dear ,
Welcome to HCM.
As per your query your friend has sweating followed by nausea and
lightheadedness while on Glycomet . Well there can be many reasons for dizziness like ,
Low blood sugar and iron level , Some medications like anti-seizure drugs, antidepressants, sedatives and tranquilizers ,
Ear infection , Due to some medication , Benign paroxysmal positional vertigo , Meniere's disease and Migraine . As it happen 20-30 minutes ago it must not be due to some serious problem . In your case the symptoms seems to be due to side effects of medicine , so consult concern doctor and discuss the condition . Doctor may order certain tests like CT scan , blood test , rotatory chair test ,
posturography and examination with otoscope . Doctor may prescribe antiemetic drug , antibiotics (amoxicillin or penicillin ) at least for 10 days , antihistamine ,
Prochlorperazine and recommend vestibular therapy .
Hope your concern has been resolved.
Get Well Soon.
Best Wishes,
Dr. Harry Maheshwari