Several supplements have at least preliminary clinical evidence supporting their use for women’s sexual desire, though none are FDA-approved for this purpose. The most studied options include ashwagandha, fenugreek, a combination of L-arginine with pine bark extract, and saffron. Results in clinical trials typically appear within four to eight weeks, and the strength of evidence varies considerably from one supplement to the next.
It’s worth noting upfront that the International Society for the Study of Women’s Sexual Health has cautioned that over-the-counter supplements are not regulated by the FDA, which means companies can make claims about safety and effectiveness without meeting the standards required of pharmaceutical products. That said, some of these ingredients do have real trial data behind them.
Ashwagandha
Ashwagandha is one of the better-studied options. In a randomized, double-blind, placebo-controlled trial of 62 healthy women aged 18 to 50, those taking 600 mg per day of ashwagandha root extract for eight weeks showed significantly greater improvements in overall sexual function compared to placebo. The improvements were particularly notable in desire and satisfaction. Because the study used healthy women rather than those with a diagnosed sexual disorder, it suggests ashwagandha may have a broad effect on sexual wellbeing rather than targeting a specific dysfunction.
Fenugreek
Fenugreek seed extract has shown promise through its effect on sex hormones. In a double-blind trial of 80 women aged 20 to 49, those taking 600 mg per day of a standardized fenugreek extract over two menstrual cycles experienced significant increases in both free testosterone and estrogen levels. These hormonal shifts translated into measurable improvements in sexual desire, arousal, and frequency of intercourse compared to placebo. The hormonal mechanism here is relatively well understood: fenugreek appears to support the production of sex hormones that directly influence libido.
L-Arginine and Pine Bark Extract
One of the more impressive data sets comes from a combination supplement pairing L-arginine (an amino acid) with pine bark extract. This combination works by boosting nitric oxide production, which increases blood flow to genital tissue during arousal. The mechanism is similar in principle to how erectile dysfunction drugs work in men, but through a non-hormonal pathway.
In a study of 100 premenopausal women aged 37 to 45, total sexual function scores nearly doubled over eight weeks on this combination. A separate randomized, double-blind trial of 80 premenopausal women found sexual function scores increased by 60% after one month and 73% after two months. Postmenopausal women also benefited: in a trial of 80 women aged 47 to 53, scores for orgasm, satisfaction, and reduced pain during intercourse nearly doubled within four weeks. If you’re looking for a non-hormonal option with relatively strong evidence, this combination is worth considering.
Saffron for Antidepressant-Related Issues
Saffron fills a specific niche. SSRIs, the most commonly prescribed antidepressants, frequently reduce sexual desire and arousal as a side effect. In a randomized, double-blind trial of 34 women taking the antidepressant fluoxetine, those who added 30 mg of saffron daily showed significant improvements in arousal and lubrication by week four. Pain during intercourse also decreased substantially. Importantly, depressive symptoms didn’t differ between the saffron and placebo groups, meaning the sexual improvements came from the saffron itself rather than from feeling less depressed. If your libido concerns are tied to antidepressant use, saffron has more targeted evidence than most other supplements.
Tribulus Terrestris
Tribulus terrestris is widely marketed for female libido, but the evidence is weaker than you might expect from its popularity. A systematic review found that both premenopausal and postmenopausal women did show improvements in sexual function scores after one to three months of use. Three months of treatment raised testosterone levels in premenopausal women, though this effect wasn’t seen in postmenopausal women. However, the review rated the overall certainty of evidence as “very low,” meaning future studies could easily change these conclusions. One trial even found improvements in arousal, lubrication, orgasm, and satisfaction but not in desire specifically, which is a notable gap for a supplement marketed primarily for libido.
DHEA
DHEA is a hormone precursor your body naturally produces, and levels decline with age. Vaginal DHEA has been studied in postmenopausal women at dosages of 3.25 mg and 6.5 mg per day, primarily for vaginal symptoms rather than desire. Oral DHEA supplements are widely available, but DHEA is not currently approved to treat sexual dysfunction. Because it directly affects hormone levels, it carries different risks than herbal supplements, and the line between “supplement” and “hormone therapy” blurs quickly with DHEA.
What to Expect Realistically
Most clinical trials showing positive results ran for four to eight weeks before significant changes appeared. This is consistent across ashwagandha, the L-arginine and pine bark combination, and saffron. Fenugreek trials measured outcomes over two menstrual cycles, roughly the same timeframe. If you try a supplement and notice nothing after two months of consistent use, it’s reasonable to conclude it isn’t working for you.
Dosages matter more than most people realize. The positive trial results came from specific doses: 600 mg per day for ashwagandha, 600 mg per day for fenugreek extract, and 30 mg per day for saffron. Buying a supplement that contains a fraction of the studied dose, or one that uses a different type of extract, may not produce the same results. Look for products that specify the extract type and dosage per serving rather than hiding ingredients inside a proprietary blend.
Why the Cause Matters
Low libido in women rarely has a single cause, which is one reason no single supplement works for everyone. Stress, relationship dynamics, hormonal shifts during perimenopause, medication side effects, fatigue, and underlying health conditions all contribute. The ISSWSH has pointed out that lumping all sexual problems together is unlikely to lead to appropriate treatment, which is why identifying the underlying factor makes a real difference in choosing the right approach.
For premenopausal women with persistent low desire that causes personal distress, there are also two FDA-approved prescription medications available in the United States, both backed by extensive safety and efficacy data. These require a diagnosis and prescription, but they represent an option if supplements don’t provide meaningful improvement.