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Published on: 1/12/2026
Tongkat Ali may help some men with erectile dysfunction by raising testosterone and lowering stress hormones, with a placebo-controlled study showing improved erection quality after about 8 to 12 weeks on a standardized extract at 200 to 300 mg daily. See details below. There are several factors to consider, including product quality, dosing, side effects and drug interactions, and the possibility that ED signals cardiovascular or metabolic disease; for complete guidance and next steps to discuss with your clinician, review the information below.
Erectile dysfunction (ED) affects millions of men worldwide and can stem from a mix of physical, hormonal and psychological factors. Tongkat Ali (Eurycoma longifolia), a traditional Southeast Asian herb, has gained attention for its potential to boost testosterone and support sexual function. Here’s what the science and clinical studies tell us about using Tongkat Ali for erectile dysfunction.
Tongkat Ali, also known as “longjack,” is a flowering plant native to Malaysia and Indonesia. Its root has been used for centuries in traditional medicine to:
Active compounds called quassinoids—including eurycomanone—are thought to drive its effects on hormone levels and sexual health.
Erectile function depends on healthy blood flow, strong nerve signals and balanced hormones—especially testosterone. Here’s how Tongkat Ali may target key aspects of ED:
Testosterone Boost
– Studies suggest Tongkat Ali can raise free and total testosterone, helping men with low or borderline levels.
– Higher testosterone supports sex drive, improves mood and helps maintain the tissue health of the penis.
Stress Reduction
– Chronic stress elevates cortisol, which can block testosterone production and impair erectile function.
– Some research indicates Tongkat Ali may lower cortisol, easing stress and anxiety that interfere with intimacy.
Improved Blood Flow
– While direct data on penile blood flow are limited, better hormonal balance and reduced stress can contribute to improved circulation.
Enhanced Libido and Confidence
– By combining higher hormones with reduced anxiety, men often report stronger sexual desire and less performance worry.
One of the most cited trials is a 2013 randomized, double-blind, placebo-controlled study by Talbott et al. (Aging Male).
Study design
Key findings
What it means
Limitations to note
If you’re considering Tongkat Ali for ED, keep these points in mind:
• Quality and Standardization
– Look for reputable brands that specify Eurycomanone content (usually 1–2% by weight).
– Third-party testing ensures purity and consistency.
• Typical Dosage
– Clinical studies often use 200–300 mg of standardized extract daily.
– Follow label instructions and start at the lower end to assess tolerance.
• Expected Timeline
– Some men notice appetite for sex improving in 2–3 weeks.
– Maximum benefits on testosterone and erectile quality may take 8–12 weeks.
• Potential Side Effects
– Mild insomnia, irritability or restlessness in sensitive individuals
– Rare gastrointestinal upset
– Not recommended for men with hormone-sensitive cancers or severe heart, liver or kidney disease
• Drug Interactions
– May interact with blood thinners, antidiabetic drugs or medications that affect the liver.
– Always check with your healthcare provider before combining supplements with prescription meds.
While Tongkat Ali shows promise, ED can be a sign of underlying health issues such as cardiovascular disease, diabetes or hormonal imbalances. If you experience persistent or worsening symptoms, consider a free, online symptom check for erectile dysfunction. Early evaluation can uncover root causes and guide appropriate treatment.
Consult a Doctor First
– Share your full medical history and medication list.
– Discuss whether Tongkat Ali is right for you or if alternative treatments might be safer.
Combine With Healthy Lifestyle Habits
– Regular exercise, a balanced diet and good sleep all support testosterone levels and vascular health.
– Managing stress through mindfulness or therapy can enhance results.
Monitor Your Progress
– Keep a journal of dosage, sexual performance and any side effects.
– Reassess after 8–12 weeks to decide if you’ll continue, adjust dose or explore other options.
Avoid “Quick Fix” Claims
– Steer clear of products promising instant results or extremely high doses—they may be adulterated or unsafe.
While supplements can help, they work best alongside other strategies:
Tongkat Ali offers a scientifically supported way to raise testosterone and improve erectile function, particularly in men with mild-to-moderate dysfunction and stress-related hormone imbalances. The key is choosing a high-quality, standardized extract, using a proven dose, and allowing 8–12 weeks for results. However, ED may signal deeper health issues—so if symptoms persist or you have risk factors for cardiovascular disease, diabetes or mood disorders, consider doing a free, online symptom check for erectile dysfunction and speak to a doctor about a comprehensive evaluation.
Remember: Always consult your healthcare provider before starting any new supplement, especially if you have chronic health conditions or take prescription medications. If you experience severe chest pain, sudden shortness of breath or other alarming symptoms, seek medical attention immediately.
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