The Health Benefits of the Damiana Plant

Damiana (Turnera diffusa, Turnera aphrodisiaca) is a wild shrub native to Texas, Mexico, South and Central American, and the Caribbean. The dried leaves are used medicinally and are believed to have an aphrodisiac effect for both men and women.

A damiana plant in the sunlight
H. Zell / Wikimedia Commons / CC BY-SA 3.0

In alternative medicine, damiana is also used for asthma, anxiety, depression, headache, and menstrual disorders, however, there is a lack of supporting evidence.

Health Benefits

Despite centuries of use in folk medicine, few scientific studies have investigated the use of damiana to treat or prevent any disease or condition, and the majority of research is limited to animal and laboratory studies.

Improved Sexual Function

Although it is widely promoted as a sexual stimulant and aphrodisiac, scientific support for the benefits of this herb is lacking.

A 2009 study on rats found that damiana helped sexually exhausted male rats rebound for a second ejaculation. According to the study authors, the results support its use as an aphrodisiac in traditional medicine and suspect specific flavonoids in the herb may be responsible for its pro-sexual effect.

Damiana isn't just for men. Some research suggests the herb may improve women's sexual enjoyment as well. Two studies found an herbal preparation containing damiana improved women's overall satisfaction with their sex life.

Both studies investigated the supplement ArginMax for Women, a proprietary nutritional blend of ginseng, ginkgo, damiana, L-arginine, multivitamins, and minerals. 

The first study, published in the Journal of Sex and Marital Therapy, included 77 women given either ArginMax or a placebo for four weeks. At the end of the study, 73% of women given the herbal formula reported an increase in sexual desire, reduction of vaginal dryness, a greater frequency of sexual intercourse and orgasm, and enhanced clitoral sensation compared with 37% of the placebo group.

A second study examined ArginMax in women in various stages of life— premenopause, perimenopause, and postmenopause. While all groups reported higher levels of sexual desire and satisfaction, researchers noted improvements in the postmenopausal were quite significant. In addition, the supplement did not impact estrogen levels, and the study authors noted ArginMax may be a better alternative than hormone-replacement therapy for older women who seek to increase their libido.

Appetite Suppressant

Damiana has been studied as a potential weight-loss tool. In a 2013 study published in the journal Appetite, women who were given an herbal formula containing damiana, yerba maté, and guarana plus an inulin-based soluble fermentable fiber 15 minutes before meals ate significantly less food by volume and calories compared to a placebo. Subjects who took just damiana, yerba maté, and guarana without the added fiber also consumed fewer calories. According to study authors, the herbal combination produced a robust, short-term decrease in appetite.

An earlier study found the combination damiana, yerba maté, and guarana delayed gastric emptying by an additional 20 minutes and decreased time to feel full. After 45 days of taking the supplement daily before the main meal of the day, subjects lost an average of 11 pounds more than those taking a placebo. Those who continued to take the supplement for a year maintained that weight loss.

While this research shows promise for weight management, more research is needed before damiana can be recommended as a weight-loss aid.

Possible Side Effects

Damiana is generally regarded as safe, however high consumption has been linked to serious adverse reactions including convulsions and symptoms similar to rabies or strychnine poisoning after taking 200 grams of damiana extract.

Damiana may lower blood sugar and should be taken with caution in people with diabetes who take insulin or other blood-sugar-lowering drugs. This may cause a problem during surgery and damiana should not be taken in the two weeks prior to surgery.

The safety of damiana has not been established in pregnant and breastfeeding women. It should not be taken during this time.

Damiana has no known moderate to severe interactions with other medications, those some mild interactions have been reported. If you are taking any prescription drugs, check with your doctor or pharmacists before taking this or any herb.

Selection, Preparation & Storage

Damiana is sold as in capsule form, liquid extracts, and teas at health-food stores and shops specializing in supplements and herbs. There is no standard dosage for damiana at this time. Follow the directions on the packaging.

Damiana is also included in other herbal formulations and teas marketed for both weight loss and libido enhancement.

Dietary supplements are not regulated by the U.S. Food & Drug Administration. To ensure you are purchasing a quality product look for a trusted independent, third-party seal on the label, such as U.S. Pharmacopeia, NSF International, or ConsumerLab.

Common Questions

What does damiana tea taste like?

Damiana tea has a bitter taste that some people find unpleasant. You can mix damiana with other herbal teas, such as ginger or blackberry, to make it more palatable. It is also included in other tea blends, such as Mountain Rose Herbs Love Tea, which mixes it with cacao, rose petals, cinnamon, orange peel, and vanilla.

Is damiana legal in the United States?

The herb damiana is legal in 49 out of the 50 states in the U.S. It was banned in Louisiana in 2005 along with 40 other plants after allegedly being included in preparations of synthetic cannabis, also known as spice. In high doses, damiana may cause hallucinations. Smoking and inhaling damiana is not recommended.

What is damiana liqueur?

Damiana liqueur is a light, herbal-based liqueur made from the dried leaves and stems of the damiana herb. Sometimes used in place of triple sec in margaritas, it is believed to have been used in the original margarita recipe.

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