What Causes Dizziness And Abdominal Bloating While On Metronidazole And Clarithromycin?

Hi Doctor, I am taking Metronidazole 500mg for H pylori along with lansoprazole 30 mg and Clarithromycin 500 mg from past 4 days.I feel very dizzy and bloating and get frequent burbs . What are the side effects if have to stop the course in the middle of 14 days course. How long i need to wait to have a glass of alcohol if i finish the course fully. Thanks Jim