The human study everyone cites for damiana and libido tested a formula with 6 ingredients. Damiana was 1 of them.
The other 5 were ginseng, ginkgo, L-arginine, multivitamins and minerals. Nothing in that trial isolates what damiana did.
Quick Answer: Is Damiana an Aphrodisiac?
Not on human evidence for damiana alone. The trial usually cited tested ArginMax for Women, a formula containing ginseng, ginkgo, damiana, L-arginine, multivitamins and minerals, in which 73.5% of the active group improved against 37.2% on placebo. The damiana-specific evidence is in rats, at 80 mg per kg, against yohimbine.
Key Takeaways
- The human trial used a formula with 6 ingredients, 1 of them damiana.
- In it, 73.5% improved against 37.2% on placebo across 4 weeks.
- The damiana-only evidence is in rats, at 20 to 80 mg per kg.
- The comparator in that rat study was yohimbine at 2 mg per kg.
- Caffeine was 1 of 3 main compounds in the active rat extract.
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The Human Trial, Named Properly
Almost every article about damiana and libido points at this study, and almost none says what was actually in the capsule. What damiana is comes first, in our full damiana guide.
| Feature | Detail |
|---|---|
| Product tested | ArginMax for Women, a proprietary formula |
| Ingredients | Ginseng, ginkgo, damiana, L-arginine, multivitamins, minerals |
| Participants | 77, with 34 active and 43 placebo |
| Duration | 4 weeks |
| Improved overall satisfaction | 73.5% active against 37.2% placebo |
| Statistical significance | p under 0.01 |
| Side effects | None significant reported |
Improvements were also reported in desire, vaginal dryness, frequency and clitoral sensation.[1]A double-blind placebo-controlled study of ArginMax, a nutritional supplement for enhancement of female sexual function — Journal of Sex and Marital Therapy (2001) View source A 6-ingredient formula cannot tell you what 1 of its ingredients did.
The Damiana-Only Evidence
For damiana by itself, the best study used sexually exhausted male rats.
- Doses: 20 to 80 mg per kg of Turnera diffusa.
- Comparator: Yohimbine at 2 mg per kg.
- Result at 80 mg per kg: More males resumed a second series.
- Also: A shorter post-ejaculatory interval.
The effects were explicitly not associated with increased locomotor activity or anxiety-like behaviour, and the active extract contained caffeine, arbutine and flavonoids.[2]Turnera diffusa Wild (Turneraceae) recovers sexual behavior in sexually exhausted males — Journal of Ethnopharmacology (2009) View source The authors suggested a mechanism analogous to yohimbine.
What That Does and Does Not Support
Rat sexual-behaviour models are a real research tool and they are not a human result.
| Claim | Status |
|---|---|
| Damiana is a traditional aphrodisiac | True, and long documented |
| Damiana improves human sexual function | Not shown for damiana alone |
| A formula containing damiana helped women | Shown, with 5 other ingredients |
| Damiana works like yohimbine | Suggested in rats, not tested in people |
| Damiana raises testosterone | 0 human trials |
The hormone question has its own precise and surprising answer, set out in what the lab work found.
Why Sexual Difficulty Deserves More Than a Herb
This is the part that matters more than any of the numbers above.
- Cardiovascular: Erectile difficulty can be an early sign.
- Hormonal: Thyroid and other causes are treatable.
- Medication: A very common and reversible cause.
- Mental health: Frequently the largest factor of the 4.
A new or persistent change deserves assessment rather than a supplement, whatever the tradition says. Whether damiana produces any noticeable effect at all is covered in the effects people actually report.
If You Want to Try It Anyway
It is cheap, traditional and thinly evidenced, and those 3 facts sit together.
- Format: 1000 mg per capsule, or as a tea.
- Expectation: Low, given 0 human trials of damiana alone.
- Not in pregnancy: Nor with glucose-lowering medication unasked.
- Not instead of: A clinical conversation about a real change.
The genus review is blunt about why expectations should stay low: most of its 12 reported activities were investigated only in chemical, cell-based or animal assays.[3]Ethnobotany, phytochemistry, and bioactivity of the genus Turnera (Passifloraceae) with a focus on damiana - Turnera diffusa — Journal of Ethnopharmacology (2014) View source On those terms the bottled form is an honest traditional herb.
See a Clinician Rather Than Reaching for a Herb If
- Pregnancy or planning a pregnancy, given the traditional use of Turnera species as abortives
- New or persistent sexual difficulty, which can signal a cardiovascular, hormonal or mental-health issue and deserves assessment
- Diabetes, or use of any glucose-lowering medication
- Liver disease, or unexplained jaundice, dark urine or right-sided abdominal pain
- Any plan to smoke or vape damiana leaf
Frequently Asked Questions
Is damiana a real aphrodisiac? +
It is a real traditional aphrodisiac. The human trial cited for it tested a formula with 6 ingredients, and the damiana-only evidence is in rats.
Does damiana work for men? +
The rat study used male rats at 80 mg per kg. There are 0 human trials of damiana alone in men.
What does damiana do for men? +
Nothing has been demonstrated in men specifically. The 1 human study of a damiana-containing formula recruited women.
Does damiana increase testosterone? +
There are 0 human trials measuring testosterone. The rat work suggested a mechanism analogous to yohimbine rather than a hormonal one.
How long does damiana take to kick in? +
No human trial has measured onset for damiana alone. The 6-ingredient formula study ran 4 weeks before measuring.
Is it stronger than maca? +
Neither has strong human evidence for libido alone. Maca has more human trials than damiana's count of 0 for the single herb.
What was in ArginMax? +
Ginseng, ginkgo, damiana, L-arginine, multivitamins and minerals. Damiana was 1 component of 6.
Did that trial show damiana works? +
No. It showed the formula outperformed placebo, with 73.5% improving against 37.2%, and it cannot separate the 6 ingredients.
Does damiana help erectile dysfunction? +
There are 0 human trials. Erectile difficulty can be an early cardiovascular sign, so a new change deserves assessment.
Is damiana safe to combine with other libido herbs? +
There are 0 trials of any such combination. Stacking multiplies the unknowns rather than the effect.
How much did the rats get? +
Between 20 and 80 mg per kg, and only the highest of the 3 doses, 80 mg per kg, produced the effect.
Related Reading
- Damiana Tea and How to Brew It
- Damiana Side Effects and Who Should Avoid It
- How Much Damiana to Take
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