Maca is one of the best-selling herbal supplements for sex drive and staying power. Labels promise more desire, firmer erections, and all-day energy. So, does maca root really work for male stamina and libido?
The honest answer is “maybe a little, for desire.” A few small trials suggest maca may raise sexual desire in some men. The evidence for erections and athletic stamina is thinner, and the studies are short and small.
In this guide, I’ll walk you through what the trials actually measured and what they did not. Then I’ll lay out a practical plan if you still want to try it, plus the training and lifestyle moves that have stronger backing than any powder. Think of it as a coach’s reality check, not a sales pitch.
If you have ongoing sexual problems, chest pain, or a medical condition, check with your doctor before using maca or starting a new training plan.
Quick Answer: Maca root may modestly improve sexual desire in some men, based on a few small, short trials. It did not change testosterone in those studies. Evidence for erections and athletic stamina is limited and mixed. Maca looks fairly well tolerated, but it is not a proven treatment for any sexual problem.
What Is Maca Root, and Why Do Men Take It?
Maca (Lepidium meyenii) is a root crop grown in the high Andes of Peru. It belongs to the mustard family, alongside broccoli and cabbage. People in the Andes have used it for centuries to support fertility, according to a systematic review of maca and sexual function.
Today you can buy it as a powder, capsules, tablets, or a concentrated extract. The studies below used different forms, including gelatinized tablets, dried root powder, and dry extract, as the same review’s trial table shows. That matters, because a result with one product may not carry over to another.
Men usually reach for maca for three goals: more sex drive, better erections, and more stamina. These are three different things. According to Mayo Clinic, male sexual arousal involves the brain, hormones, emotions, nerves, muscles, and blood vessels, and a problem in any one of them can cause trouble.
So we’ll test maca against each goal separately. If you want a deeper look at libido alone, see our guide to maca root and male libido.
Does Maca Root Really Work for Male Stamina and Libido? What the Research Shows
Let’s start with the big picture. A 2010 systematic review searched 17 databases and found only four small randomized trials of maca for sexual function, with 131 people in total (men and women). Doses ranged from 1.5 to 3.5 grams a day, for 2 or 12 weeks. The authors called the evidence limited and said more rigorous studies were needed.
Newer work has not changed that picture much. Here is the evidence, one goal at a time.
Does Maca Raise Sexual Desire?
This is where maca looks best. In a randomized, placebo-controlled trial, men aged 21 to 56 took 1,500 mg or 3,000 mg of maca daily, or a placebo, for 12 weeks. Self-rated sexual desire improved with maca starting at week 8. The change was not explained by shifts in mood scores, testosterone, or estradiol.
That is a real signal, but it is one small trial of a single commercial product. Desire is also self-reported, so expectation can play a part. A second small study of eight trained cyclists also found higher desire scores on maca extract than on placebo after 14 days.
If your drive has been low for months, maca is rarely the first thing to examine. Stress, sleep, medicines, and health conditions are common causes, and our guide to low libido in men after 40 walks through them.
Does Maca Raise Testosterone?
The trials say no. In the desire study above, testosterone and estradiol did not differ between the maca and placebo groups. A separate study of healthy men taking 1.5 or 3.0 grams daily for up to 12 weeks also found that reproductive hormone levels were not affected.
That is a useful reality check. Maca is often sold as a testosterone booster, but these trials do not support that label. If the benefit for desire is real, the way it works is still unclear.
If you suspect low testosterone, the answer is a blood test and a doctor’s visit, not a guess. For a different supplement angle, see our article on zinc and testosterone.
Does Maca Help Erections?
The best evidence is a randomized, double-blind trial of 50 men with mild erectile dysfunction (ED). They took 2,400 mg of maca extract daily or a placebo for 12 weeks. Scores on the IIEF-5 questionnaire rose in both groups, but more with maca (about 1.6 points versus 0.5).
The authors called the effect “small but significant,” and it was measured by questionnaire, not by any blood-flow test. Notice that the placebo group improved too. That is common in sexual health trials, and it is one reason I treat small gaps with caution.
ED is also not just a supplement problem. Mayo Clinic lists heart disease, high blood pressure, diabetes, obesity, tobacco use, stress, and some medicines among the causes. A Mayo Clinic Q&A adds that ED can be an early warning sign of other health problems, which is why it deserves a medical check.
Does Maca Improve Athletic Stamina?
Here the evidence is the weakest. The only controlled study I found tested eight trained male cyclists over 14 days. Their 40 km (about 25 miles) time trial improved compared with their own baseline, but not compared with placebo.
That means the study cannot separate maca from practice, motivation, or expectation. None of the trials above tested lifting performance, gym conditioning, or sports endurance in a rigorous way. If you want more stamina, training is the proven route, and our guide to increasing energy and stamina naturally is a good place to start.
What About Sperm and Fertility?
Maca is also marketed for fertility, so it deserves a quick mention. A 2022 systematic review and meta-analysis of five randomized trials found mixed results on semen quality and no significant increase in sperm concentration. The authors said the trials were too few and too small for firm conclusions.
This is a separate question from libido. But it shows the same pattern: promising headlines and thin evidence.
Why the Evidence Is Weaker Than the Marketing
The systematic review explains why the authors would not draw firm conclusions. The same weaknesses show up across the maca studies:
- Small samples. The sexual-function trials enrolled between 8 and 57 people each.
- Short duration. Most ran 2 to 12 weeks, so long-term effects are unknown.
- Different products. Gelatinized tablets, dried powder, and dry extract are not interchangeable.
- Self-reported outcomes. Desire and well-being scores can move with expectation alone.
- Placebo response. In the ED trial, the placebo group improved too.
Maca Trials at a Glance
| Study | Who | Dose and length | What happened | Main limits |
| Gonzales 2002 | 57 healthy men, ages 21–56 | 1,500 or 3,000 mg/day, 12 weeks | Self-rated desire improved from week 8; testosterone and estradiol unchanged | Self-reported outcome; one commercial product |
| Gonzales 2003 | 56 healthy men | 1.5 or 3.0 g/day, up to 12 weeks | Reproductive hormones unchanged | Hormone study, not a performance study |
| Zenico 2009 | 50 men with mild ED | 2,400 mg/day, 12 weeks | IIEF-5 rose in both groups, more with maca (about 1.6 vs 0.5 points) | Small gap; placebo also improved |
| Stone 2009 | 8 trained male cyclists | Maca extract, 14 days | 40 km (about 25 miles) time trial no better than placebo; desire higher than placebo | Only 8 people |
| Shin 2010 | 4 trials, 131 people | 1.5–3.5 g/day, 2 or 12 weeks | Limited evidence; more rigorous trials needed | Review of small studies |
| Lee 2022 | 5 trials on semen quality | 1–5 g/day, 12–16 weeks | No significant rise in sperm concentration; effects unclear | Few, small trials |
Does Maca Root Really Work for Male Stamina and Libido in Real Life? A Practical Plan
Let’s turn the research into a plan. There are two parts: how to run a fair test if you choose to try maca, and what to do first either way.
If You Still Want to Try Maca
- Check with your doctor or pharmacist first. This matters most if you take regular medicines or have a thyroid, heart, or blood sugar condition.
- Pick one product and read the label. Trials used about 1.5 to 3.5 grams a day, per the systematic review. Those are research doses, not a recommendation.
- Give it 8 to 12 weeks. In the main trial, desire changed at week 8, not week 1.
- Change one thing at a time. Don’t start maca, a new sleep schedule, and a new program in the same week.
- Track simple numbers weekly. Rate desire and energy from 1 to 5, and log workouts and sleep hours.
- Stop and call your doctor if you notice new or worrying symptoms.
Coach’s Tip: Rate your desire and energy from 1 to 5 every Sunday, and jot down sleep and alcohol. After 12 weeks you can compare real numbers instead of trusting your memory. If nothing moved, you’ve saved yourself months and money.
Exercise is the best-supported lever here, and it fits what we do as coaches. In a Mayo Clinic Q&A, one study found that raising cardio to 120 minutes or more a week had an effect on ED nearly as strong as medication. Mayo Clinic also lists regular exercise, stress control, quitting tobacco, and limiting alcohol as ways to help prevent ED.
Here is a beginner-friendly week. Get your doctor’s okay first if you have heart disease, diabetes, or chest pain, or if you have been inactive for a long time. For more on this topic, see our piece on stamina and sexual wellness for men.
Strength days (Monday and Thursday). Do all five exercises, resting between sets.
| Exercise | Sets × reps | Rest | Easier version | Harder version |
| Goblet squat | 3 × 8–10 with 25–35 lb (11–16 kg) | 90 sec | Box squat to a bench, lighter weight | Heavier dumbbell, or a 3-second lowering |
| Dumbbell Romanian deadlift | 3 × 8–10 with 20–30 lb (9–14 kg) in each hand | 90 sec | Hip hinge with no weight | Add 5 lb (2 kg) per hand |
| Push-up | 3 × 8–12 | 60 sec | Hands on a bench | Feet on a step |
| One-arm dumbbell row | 3 × 10 each side with 25–35 lb (11–16 kg) | 60 sec | Lighter weight, free hand on a bench | Heavier dumbbell, 1-second pause at the top |
| Plank | 3 × 20–40 sec | 45 sec | Knees down | Hold 45–60 sec |
Goblet squat cues. Hold the dumbbell at your chest and keep your elbows inside your knees. Sit down between your heels for about two seconds, then push the floor away to stand. It should feel like work in your thighs and glutes, not your lower back.
Romanian deadlift cues. Keep a soft bend in the knees and push your hips back, as if closing a car door with your backside. Keep your back flat and let the dumbbells slide down your thighs to mid-shin. Stop when you feel a stretch in your hamstrings.
Cardio days (Tuesday, Friday, Saturday).
- Tuesday: 30 minutes of brisk walking or easy cycling at a pace where you can still talk. That is roughly 1.5–2 miles (2.4–3.2 km) on foot.
- Friday: 30–40 minutes with five 1-minute faster efforts spaced through the session.
- Saturday: 45–60 minutes easy, about 8–10 miles (13–16 km) on a bike, or a long walk.
- Easier: Cut each session by 10 minutes. Harder: Add a fourth cardio day, or stretch Saturday by 10 minutes.
Wednesday and Sunday are rest or light stretching. For progression, add one rep per set each week until you hit the top of the range. Then add 5 lb (2 kg) and drop back to the low end. Leave about two reps in the tank on most sets.
Common Mistake: Stacking maca with several “male enhancement” products and a brand-new hard program all at once. If something goes wrong, you won’t know the cause. You may also be mixing ingredients you never checked.
Safety Notes: Who Should Be Careful With Maca
Maca has been eaten as food for a long time, and the trials so far look reassuring. NIH LiverTox says that in small clinical trials, maca extracts were well tolerated, with only minor, transient side effects. It also notes that one systematic review found the trials gave no information on adverse events. In plain terms, the safety data are limited, not proven perfect.
Here is who should slow down and talk to a doctor first:
- People with thyroid disease. Maca contains glucosinolates, plant compounds that some sources link to thyroid effects.
- Anyone taking regular medicines. Interactions with maca are not well studied.
- Men with ongoing ED. As noted above, Mayo Clinic says it can be linked to heart disease, diabetes, and other conditions that need treatment.
- Anyone who feels chest pain, shortness of breath, or dizziness during exercise. Stop and get checked before you train again.
Product quality is another concern, because supplements are not tested like medicines before sale. Look for a brand that shows third-party testing, and avoid products that promise to cure sexual problems.
Check with your doctor or physical therapist before using maca or starting a new exercise program, especially if you have heart disease, diabetes, thyroid disease, or take regular medicines.
Beyond Maca: Habits That Support Stamina and Libido
If maca does little for you, you have lost nothing but a few dollars. The habits below have better backing, and they cost less.
Fix sleep and stress first. Mayo Clinic lists stress and sleep conditions among the factors that can cause or worsen ED. Our guide on stress, poor sleep, and male libido shows how to tackle both.
Cut back on alcohol and tobacco. Mayo Clinic names heavy drinking, drug use, and tobacco as risk factors. Even modest cuts are a smart experiment.
Manage weight and blood sugar. Obesity and diabetes are both on Mayo Clinic’s list of physical causes. A routine checkup can catch them early, and the training week above supports both goals.
Review your medicines with a doctor. Mayo Clinic notes that antidepressants, antihistamines, and some blood pressure, pain, and prostate medicines can contribute. Never stop a prescription on your own.
Compare other options with the same skepticism. If you are weighing other products, read our reviews of ashwagandha for testosterone and libido and L-arginine for blood flow. For the wider picture, see whether libido supplements for men actually work. Each has its own evidence and limits, so apply the same test: who was studied, for how long, and against what placebo?
FAQ: Maca Root, Male Stamina, and Libido
Does maca increase testosterone?
Research so far says no. In healthy men taking 1.5 or 3.0 grams daily, reproductive hormone levels did not change, including testosterone. The desire benefit seen in one trial also appeared without a testosterone rise. If you suspect low testosterone, ask a doctor about testing instead of guessing.
How long does maca take to work for libido?
In the main trial, desire scores improved starting at week 8 of a 12-week study, not sooner. Any fair test should run about 8 to 12 weeks with one product at a steady dose. Results may not apply to you, since the trial was small and based on self-ratings.
How much maca should a man take a day?
Studies used about 1.5 to 3.5 grams daily for 2 to 12 weeks, according to a systematic review. Those are research doses, not medical advice. Products differ in form and strength, so follow the label and ask your doctor or pharmacist, especially if you take medicines or have a health condition.
Can maca help with erectile dysfunction?
It may help a little, at most. In a 12-week trial of 50 men with mild ED, erection scores rose in both groups, but more with maca. The gap was small. ED can signal heart disease or diabetes, so see a doctor rather than self-treating.
Is maca safe to take every day?
Small trials report only minor, temporary side effects, according to NIH LiverTox. Still, the studies are short and small, so long-term safety is not well established. Choose one product, avoid stacking supplements, and call a doctor if you notice new symptoms.
Does maca improve athletic stamina?
Not reliably. In a small crossover study of eight trained cyclists, maca extract improved 40 km (about 25 miles) time-trial performance versus baseline, but not versus placebo. That means maca can’t be separated from practice or expectation. Consistent training and sleep remain the proven path.
The Bottom Line: Does Maca Root Really Work for Male Stamina and Libido?
So, does maca root really work for male stamina and libido? For libido, maybe, and only modestly: a few small trials saw desire improve after about eight weeks, with no change in testosterone. For erections, the evidence is small and mixed. For athletic stamina, there is no solid proof.
If you decide to try it, treat it as a 12-week experiment. Get your doctor’s okay, pick one product, change one thing at a time, and track your numbers. If nothing moves, move on without guilt.
Meanwhile, the habits with the strongest support are not glamorous. Move your body most days, lift two or three times a week, sleep well, manage stress, limit alcohol, avoid tobacco, and see a doctor about problems that don’t go away. Maca is not a shortcut, but with realistic expectations and medical guidance it can be a low-risk experiment.