Hi, I Am Using Ganaton OD 150 Mg With Polypep

Hi, I am using Ganaton OD 150 mg with Polypep 40, one daily both tablets before dinner for last 2 weeks. I am having GERD symptoms even using these medicines esp after lunch. For how long i have to take these medicines for complete relief? and what are the side effects of these medicines? i am having GERD for last 5 years due to hital hernia.