For adults, fennel seeds or tea can relax the intestines and reduce bloating caused by digestive disorders

Eyes

In the Indian subcontinent, fennel seeds are also eaten raw, sometimes with some sweetener, as they are said to improve eyesight. Ancient Romans regarded fennel as the herb of sight. Root extracts were often used in tonics to clear cloudy eyes. Extracts of fennel seed have been shown in animal studies to have a potential use in the treatment of glaucoma.

Blood and urine

Fennel may be an effective diuretic and a potential drug for treatment of hypertension.

Breastmilk

There are historical anecdotes that fennel is a galactagogue, improving the milk supply of a breastfeeding mother. This use, although not supported by direct evidence, is sometimes justified by the fact that fennel is a source of phytoestrogens, which promote growth of breast tissue.However, normal lactation does not involve growth of breast tissue. There is a single case report of fennel tea ingested by a breastfeeding mother resulting in neurotoxicity for the newborn child.

Other uses

Syrup prepared from fennel juice was formerly given for chronic coughs. It is one of the plants which is said to be disliked by fleas, and powdered fennel has the effect of driving away fleas from kennels and stables.