Fennel seeds if chewed works as a mouth freshener. Fennel seeds will sweeten and refresh your breath after a meal and especially get rid of bad breath after an odorous meal.
Fennel is highly beneficial in relieving digestive problems such as indigestion, bloating, flatulence, constipation, colic, intestinal gas, heartburn, and even irritable bowel.
Fennel seeds also help in removing water retention. Fennel seeds has no side effects unless you are allergic to it.