In folk medicine nettle plants have been used as a diuretic, to build the blood, for arthritis and rheumatism. Externally it has been used to improve the appearance of the hair, and is said to be a remedy against oily hair and dandruff.

Family: Urticaceae
Genus: Urtica
Species: dioica
Synonyms: Urtica galeopsifolia
Common Names: Nettle, big string nettle, common nettle, stinging nettle, gerrais, isirgan, kazink, nabat al nar, ortiga, grande ortie, ortie, urtiga, chichicaste, brennessel, gross d’ortie, racine d’ortie
Parts Used: Root, leaves

From The Healing Power of Rainforest Herbs:

NETTLE
HERBAL PROPERTIES AND ACTIONS
Main Actions	Other Actions	Standard Dosage
reduces allergies	stimulates digestion	Leaves, root
cleanses blood	aids lactation	Infusion: 1 cup 2-3
reduces inflammtion	promotes menstruation	times daily
relieves pain	kills germs	Capsules: 2 g 2-3
stops hair loss	lowers body temperature	times daily
increases urination		Tincture: 2-3 ml 2-3
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