Gold Member Badge


  • You're all caught up!

Fennel Tea for Constipation

author image Alyssa Northrop
Based in Minneapolis, Minn., Alyssa Northrop is a Registered Dietitian who has been writing about nutrition and health since 2004. Her work has been published in the scientific journal Explore. She holds a Master of Public Health in human nutrition from the University of Michigan.
Fennel Tea for Constipation
A fennel plant growing in the wild. Photo Credit: rbiedermann/iStock/Getty Images

Fennel, also known as Foeniculum vulgare, is an aromatic plant used throughout history for both culinary and medicinal purposes. Traditionally, fennel is a common herbal remedy for a variety of digestive ailments. Scientific research suggests that drinking fennel tea may help relax the smooth muscle in your intestines and relieve constipation.

Video of the Day

Traditional Uses

Fennel is a flavorful herb with an anise-like aroma that is common in Indian and Middle Eastern cooking. In traditional medicine, fennel has been used widely to improve digestion and appetite, to relieve flatulence, bloating and indigestion, and as a laxative. It has also been used to relieve colic in infants, to increase the milk supply of breast-feeding mothers and to treat glaucoma and hypertension.

Modern Research

A number of rigorous scientific studies support the use of fennel as a treatment for constipation. A 2012 review in the “International Journal of Food Sciences and Nutrition” noted that fennel increased gastric motility in animal models, reducing food transit time by 12 percent. In a 2010 placebo-controlled clinical trial reported in "BMC Complementary & Alternative Medicine," individuals with chronic constipation increased their colonic transit time and number of bowel movements while consuming an herbal compound containing fennel for five days. The study’s authors concluded that the compound has a laxative effect and is a safe option for the treatment of constipation.

Dosage and Preparation

Fennel seeds make a tasty medicinal tea. To prepare your own, measure 1 teaspoonful of fennel seeds and bruise them using a mortar and pestle. Bruising the seeds helps release the active oils and compounds. Pour freshly boiled water over the bruised seeds, and allow them to steep for at least 10 minutes. If using a commercially prepared tea, follow the manufacturer’s directions.


Fennel is generally considered safe for consumption, especially in amounts used for culinary purposes. However, one of the main components of the essential oil of fennel, estragole, has been associated with development of malignant tumors in rodents. It is unclear whether estragole has similar effects in humans. Consult your doctor before using any herb for medicinal purposes.

LiveStrong Calorie Tracker
Lose Weight. Feel Great! Change your life with MyPlate by LIVESTRONG.COM
  • Gain 2 pounds per week
  • Gain 1.5 pounds per week
  • Gain 1 pound per week
  • Gain 0.5 pound per week
  • Maintain my current weight
  • Lose 0.5 pound per week
  • Lose 1 pound per week
  • Lose 1.5 pounds per week
  • Lose 2 pounds per week
  • Female
  • Male
ft. in.


Demand Media