Application Chamomile-fennel tea is a natural resource for the body. Fennel and chamomile have a positive effect on the digestive tract. They help with flatulence, abdominal cramps and indigestion. In addition, chamomile contributes to optimal relaxation and helps maintain a healthy sleep. How to use 1 sachet of tea brew with boiling water under a lid for 5-10 minutes A balanced diet and healthy lifestyle are recommended.