No single pill reliably boosts sex drive for everyone, but a handful of prescription medications and supplements have real evidence behind them. What works depends on the underlying cause of low desire, whether you have a hormonal issue, a side effect from another medication, or something else entirely. Here’s what’s actually available and what the evidence says about each option.
Prescription Options for Women
Flibanserin (brand name Addyi) is the only FDA-approved daily pill specifically for low sexual desire in premenopausal women. It works on brain chemistry rather than hormones, and in clinical trials, women taking it experienced about one additional satisfying sexual encounter per month compared to placebo. That’s a modest but statistically significant improvement. It’s taken every day at bedtime, and most women need several weeks before noticing any change.
Flibanserin comes with a notable restriction around alcohol. You need to wait at least two hours after having one or two drinks before taking it, and skip the dose entirely if you’ve had three or more drinks that evening. Mixing the two can cause dangerously low blood pressure and fainting. After taking it at bedtime, you shouldn’t drink again until the next day.
Bremelanotide (brand name Vyleesi) takes a different approach. It’s not a pill but an injection you give yourself under the skin at least 45 minutes before sexual activity. The limit is one dose per 24 hours and no more than eight doses per month. It’s also approved for premenopausal women with low desire.
Prescription Options for Men
Men searching for something to increase desire often find erectile dysfunction drugs, but those improve blood flow and erections rather than desire itself. If the root problem is genuinely low desire rather than difficulty with erections, testosterone replacement therapy is the main medical option. In men with clinically low testosterone levels (diagnosed through blood tests), supplementation typically restores sex drive along with energy and mood. It’s not appropriate for men whose testosterone levels are already normal.
Testosterone for Women After Menopause
For postmenopausal women, testosterone therapy may help with low desire that has no other clear cause. No government agency has formally approved testosterone products for women, but some doctors prescribe it off-label. Side effects can include acne, facial hair growth, scalp hair thinning, and weight gain. Long-term safety data is limited, and it’s generally not recommended for women with a history of heart disease, liver disease, or breast or uterine cancer.
Supplements With Some Evidence
Most “libido supplements” on store shelves have weak or no human evidence behind them. A few exceptions stand out, though none are as well-studied as prescription drugs.
Maca root is one of the more researched options. Clinical trials have used doses between 1.2 and 2.4 grams daily over 8 to 12 weeks. A meta-analysis of two randomized trials found a small but positive effect on erectile function. The higher dose taken for a longer period (2.4 grams for 12 weeks) produced clearer results than the lower dose over 8 weeks. Maca is generally well-tolerated, but the overall body of evidence is still small.
Tribulus terrestris has more promising data than many people realize. A double-blind, placebo-controlled trial of 180 men found statistically significant improvements in sexual desire, orgasm quality, intercourse satisfaction, and overall satisfaction compared to placebo over 12 weeks. Participants took 1,500 mg daily (divided into three doses with meals). While this is only one large trial, it’s the kind of rigorous study that’s rare for herbal supplements.
L-citrulline and L-arginine are amino acids that work by boosting nitric oxide production, which relaxes blood vessels and increases blood flow to the genitals. This is the same basic mechanism behind prescription ED drugs, just weaker. These supplements may help with mild erection difficulties, but they affect physical arousal rather than mental desire. If the problem is that you’re interested but your body isn’t responding, they’re worth considering. If you simply don’t feel interested, they probably won’t help.
Medications That Kill Libido
Sometimes the best way to restore desire is to identify what’s suppressing it. A surprisingly long list of common medications can reduce sex drive or interfere with arousal.
- Antidepressants (SSRIs) are among the most common culprits. Fluoxetine (Prozac) and sertraline (Zoloft) are well known for dampening desire and making orgasm difficult. If this is the issue, buspirone, an anti-anxiety medication, can sometimes be added to counteract the effect and restore sexual interest.
- Blood pressure medications frequently affect sexual function. Thiazide diuretics (water pills) are the worst offenders, followed by beta-blockers like metoprolol and propranolol.
- Opioid painkillers including codeine, oxycodone, and morphine suppress testosterone production and commonly reduce desire in both men and women.
- Antihistamines like diphenhydramine (Benadryl) and similar allergy or heartburn medications can also interfere.
- Recreational substances including alcohol, nicotine, and marijuana all have documented effects on sexual function, especially with regular use.
If your drop in desire started around the same time as a new medication, that connection is worth exploring with your prescriber. Switching to a different drug in the same class can sometimes resolve the problem entirely.
Why “Horny Pills” Rarely Work Like You’d Expect
Sexual desire involves a complex interplay of hormones, brain chemistry, stress levels, relationship dynamics, sleep quality, and overall health. No pill addresses all of those factors at once. Even the most effective prescription option, flibanserin, adds roughly half a satisfying sexual event per month over placebo. That’s real, but it’s not the dramatic transformation many people hope for.
The supplements and medications that work best tend to target a specific bottleneck. Low testosterone responds to testosterone. SSRI-related desire loss responds to adding buspirone or switching antidepressants. Mild blood flow issues respond to L-citrulline or prescription ED medications. The “pill that makes you horny” depends entirely on what’s getting in the way in the first place.