Chew food slowly and thoroughly. Do exercises and pranayama.
Chewing a piece of ginger before meals improves digestion and helps in reducing gas formation.
Lemon juice and black pepper (kali mirch) powder taken with hot water helps to overcome gas or flatulence. Drink it after meals.
Chew on fennel seeds or make a tea by crushing the seeds and pouring boiling water over them. Have it two times a day.