Damiana (Turnera diffusa, Turnera aphrodisiaca) is a shrub native to the American southwest (Texas) and Mexico.
Other names: Herba de la pastora, damiane, the bourrique, Mexican damiana, Mexican holly, damiana de Guerrero
Classification

Kingdom: Plantae
Division: Magnoliophyta
Class: Magnoliopsida
Order:
Family: Turneraceae
Genus: Turnera
Species: Turnera diffusa, Turnera aphrodiasiaca (synonym)
Description

Damiana (Turnera diffusa, Turnera aphrodisiaca) is a shrub native to the American southwest (Texas) and Mexico. It has been used as an aphrodisiac by the Aztecs and Mayans for thousands of years.
Traditional usage

This list reflects the "traditional usage", which should be considered folklore unless supported by a scientific study. Studies, where available, are quoted and referenced. See the Disclaimer below.
Anxiety - Damiana is believed to help relieve anxiety through its effect on the central nervous system, although no studies were reviewed to confirm this.
Bladder Infections - Damiana is believed to help relieve the irritation of the urinary tract due to infection, although no studies were reviewed to confirm this.
Headaches - Damiana is believed to help relieve headaches, although no studies were reviewed to confirm this.
Respiratory Disorders - Damiana is believed to help relieve the symptons of repiratory disorders by relieving the irritation of the mucous membranes, although no studies were reviewed to confirm this.
Sexual Dysfunction - Damiana has long been thought to help with male impotence and to enhance female orgasm, though no studies were reviewed to confirm this.
Ref: [2][3][4]
Side effects

This list reflects side effects which should be considered folklore unless supported by a scientific study. Studies, where available, are quoted and referenced. See the Disclaimer below.
Iron Absorption - Damiana may interfere with iron absorption.
Ref: [2]
Tea blends

Damiana can be used alone as a tea or blended with other herbals. Common blends include:
Damiana/Mint - Damiana is often blended with either peppermint or spearmint.
Note: the above combinations of herbs and their effects should be considered "folklore" and are not based on clinical studies. See the Disclaimer below.
Chemical makeup

This list of chemicals represents the leaf
material only, where possible, and is not
comprehensive.
Albuminoids
Aluminum
Arbutin
Ascorbic-acid
Ash
Gamma-cadinene
Calamenene
Calcium
Carbohydrates
Beta-carotene
Chlorophyll
Chromium
Cineole
Cobalt
Alpha-copaene
P-cymol
Damianin
Essential Oils
|
Iron
Magnesium
Manganese
Niacin
Phosphorus
Alpha-pinene
Beta-pinene
Potassium
Protein
Riboflavin
Selenium
Silicon
Sodium
Tannins
Thiamin
Thymol
Water
Zinc
|
Ref: [1]
Learn more

PubMed - Clinical studies of Turnera diffusa
References

1. Duke, James A. Handbook of phytochemical
constituents of GRAS herbs and other economic
plants. 2000 Boca Raton, FL. CRC Press.
2. Balch, James F., Balch, Phyllis A. Prescription for Nutritional Healing Avery Publishing Group 1990
3. Ody P. The Complete Medicinal Herbal Dorling Kindersley Inc. 1993
4. Lucas, Richard M. Miracle Medicine Herbs Parker Publishing 1991
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aphrodisiac