Tongkat Ali, also known as Eurycoma longifolia, is a traditional Southeast Asian herbal remedy long valued for boosting energy, balancing hormones, and improving vitality. Today, it’s gaining global attention for its role in supporting testosterone, enhancing libido, and reducing fatigue.
While often marketed to men for testosterone support and performance, Tongkat Ali also offers benefits for women, including stress management and hormonal balance. Athletes and health-conscious individuals use it to promote muscle strength, energy, and recovery.
With growing popularity comes confusion—what’s proven and what’s hype?
This science-backed guide breaks it down. You’ll learn about Tongkat Ali’s benefits for testosterone, stress hormones like cortisol, fertility, muscle performance, and more. We also cover dosage, side effects, and how to choose a high-quality supplement to fit your health goals.
What is tongkat ali?
Tongkat Ali is a herbal supplement made from the roots of the Eurycoma longifolia plant, native to Southeast Asia. Traditionally used in Malaysian, Indonesian, and Vietnamese medicine, it was believed to treat a wide range of conditions, including malaria, infections, and fever.
Today, Tongkat Ali is best known for its potential role in hormonal health, energy support, and stress reduction.
Key Bioactive Compounds in Tongkat Ali
The plant’s health benefits come from its rich profile of bioactive compounds, including:
- Eurycomanone
- Eurycolactone
- Eurycomalactone
- Quassinoids
- β-carboline and canthin-6-one alkaloids
- Triterpenes (tirucallane)
- Squalene derivatives
- Laurycolactone
- Biphenyl neolignan
- Glycosaponins and polysaccharides
- Essential minerals like calcium, potassium, and magnesium
These compounds have antioxidant and anti-inflammatory properties, helping protect cells from damage caused by free radicals while supporting overall vitality.
What are the health benefits of Tongkat Ali?
While Tongkat Ali is often promoted as a natural testosterone booster, its potential benefits extend beyond men’s health. Research suggests it may also support stress management, muscle performance, and fertility.
However, not all claims are backed by strong evidence. The most studied benefits include:

May Increase Testosterone
One of the most recognized benefits of Tongkat Ali is its ability to support healthy testosterone levels, making it popular among men seeking natural testosterone boosters.
How Tongkat Ali Supports Testosterone
Testosterone plays a key role in muscle mass, energy, sexual function, and mood—for both men and women. As we age, testosterone levels naturally decline, leading to fatigue, low libido, and reduced physical performance.
Tongkat Ali helps counter this by:
- Increasing free testosterone, the active form used by the body.
- Reducing sex hormone-binding globulin (SHBG), which binds testosterone and makes it inactive.
- Lowering cortisol, the stress hormone that can suppress testosterone production when elevated.
These effects make Tongkat Ali especially valuable for:
- Men over 30 dealing with age-related hormonal decline.
- Athletes seeking improved strength and recovery.
- Individuals with low testosterone symptoms like fatigue or low libido.
Supporting Clinical Research
Several studies support Tongkat Ali’s role in boosting testosterone and improving reproductive health:
- A 2021 study on 45 men with low testosterone found that taking 200 mg daily, along with exercise, significantly increased testosterone levels over six months.1
- A 2016 review of animal and human research showed that Tongkat Ali improved sperm quality, motility, and testosterone levels, and enhanced sexual performance in both groups.2
Libido, energy, and vitality
Thanks to its hormone-balancing effects, Tongkat Ali is often used to boost libido, mood, and daily energy levels. These benefits apply to both men and women, though the supplement is most commonly marketed to men.
By increasing free testosterone and reducing cortisol, Tongkat Ali may:
- Enhance sexual function and desire, supporting better libido for both genders.
- Improve mood and reduce irritability, particularly in stressful situations.
- Boost energy and physical stamina, making it a popular choice among athletes and active individuals.
Because testosterone influences many body systems, Tongkat Ali is considered by many to be a daily vitality booster that supports both mental and physical performance.

Might Reduce Stress and Support Mood
In addition to its hormone benefits, Tongkat Ali is gaining attention as a natural adaptogen—a plant that helps the body manage stress. It is often used as part of stress management strategies to promote emotional balance and mental clarity.
Cortisol and Stress Response
Cortisol is the body’s primary stress hormone. While useful in short bursts, chronically high cortisol can lead to:
- Mood swings and anxiety
- Difficulty focusing or remembering
- Sleep disruption
- Hormonal imbalances
Supporting Research
A 2013 study tracked 63 adults with moderate stress over one month. Participants who took 200 mg of Tongkat Ali extract daily showed a 16% reduction in salivary cortisol compared to those taking a placebo.3
Mental Clarity and Emotional Balance
By balancing cortisol levels, Tongkat Ali may offer several mental health benefits:
- Reduced anxiety and irritability, especially during periods of stress
- Improved focus and cognitive performance, making it a useful addition to cognitive enhancement supplements
- Enhanced emotional resilience, particularly for adults experiencing hormone-related mood changes
How Tongkat Ali Works as an Adaptogen
As part of the broader category of adaptogens and their benefits, Tongkat Ali helps normalize the body’s response to stress by:
- Regulating the hypothalamic-pituitary-adrenal (HPA) axis
- Balancing cortisol and testosterone levels
- Supporting faster recovery from physical and emotional strain

Physical Performance and Muscle Strength
Tongkat Ali isn’t just for hormone support—it’s also gaining popularity as a natural performance enhancer for athletes, gym-goers, and active individuals.
Performance Benefits for Active Individuals
Research suggests Tongkat Ali may support:
- Increased Muscle Strength – Boosts testosterone and protein production to improve strength.
- Lean Muscle Growth – Helps build muscle without adding unwanted fat.
- Improved Energy Metabolism – Supports efficient energy use for better endurance.
- Reduced Muscle Fatigue – Lowers lactic acid buildup for longer, more effective workouts.
- Faster Recovery – Helps muscles repair more quickly post-exercise.
-
Enhanced Stamina and Endurance – Restores hormonal balance needed for sustained activity.
Supporting Research
Preliminary research highlights Tongkat Ali’s role in improving physical performance and muscle strength:
- A 2019 study found that young men taking Tongkat Ali showed improved peak power during resistance training sessions.4
- A separate study with 25 active older adults reported that taking 400 mg daily significantly boosted muscle strength compared to a placebo.5
Pre- and Post-Workout Use
Tongkat Ali is commonly used:
- Pre-workout, to boost strength, energy, and motivation.
- Post-workout, to support recovery and maintain hormonal balance.
When combined with proper training, nutrition, and rest, Tongkat Ali may help athletes and fitness enthusiasts achieve better results both mentally and physically.
Fertility and Reproductive Health
While much of male fertility depends on healthy testosterone levels, Tongkat Ali’s benefits may extend beyond hormone support. Research suggests it also directly improves sperm quality and reproductive outcomes, making it a promising option for men facing fertility challenges.
By enhancing hormone balance and reproductive function, Tongkat Ali may:
- Increase sperm count and motility, improving chances of conception.
- Enhance semen volume and quality, especially in men with fertility challenges.
- Support hormone-driven reproductive functions, including libido and erectile performance.
Supporting Research
Clinical studies suggest Tongkat Ali may positively impact male fertility:
- A 2010 study on 75 men in couples experiencing infertility found that 200 mg daily of Tongkat Ali improved sperm concentration and motility after three months.
- The same study reported a 14% pregnancy success rate among participating couples, suggesting real-world benefits for reproductive health.6

Tongkat Ali for Women
Though often marketed to men, Tongkat Ali is gaining attention for its potential benefits for hormonal balance support in women. Its adaptogenic and hormone-regulating properties may help women manage stress, mood, energy, and metabolic health.
Women may turn to Tongkat Ali for its ability to:
- Reduce menopausal symptoms like hot flashes and joint discomfort
- Promote lean muscle mass and support healthy weight management
- Enhance libido and sexual health
- Increase energy, stamina, and workout performance
- Improve mood and reduce stress-related fatigue
- Support blood sugar balance and metabolic health
- Promote anti-aging benefits through hormone and energy support
These benefits make it especially appealing to women in perimenopause and menopause, though younger women may also benefit—especially those managing chronic stress or seeking natural energy support.
Safety Considerations for Women
While Tongkat Ali shows promise as a non-hormonal option for women, it’s important to:
- Avoid use during pregnancy or breastfeeding
- Consult a healthcare provider if you have hormone-sensitive conditions (like breast or ovarian cancer)
Proper dosage and product quality also matter to ensure safe, effective use.

Dosage, Forms, and Usage Guidelines
Most studies recommend a daily dose of 100–200 mg of standardized Tongkat Ali extract, typically labeled as 1:100. It’s best to start at the lower end of the range to see how your body responds before adjusting if needed.
Tongkat Ali is available in capsules, powder, or liquid extracts. Capsules are the easiest to use, while powders can be added to drinks but have a bitter taste. Liquid extracts offer fast absorption but require careful dosing. For best results, choose standardized extracts with specified eurycomanone content to ensure potency.
Many users follow cycling protocols to maintain effectiveness and avoid hormone desensitization. A common cycle is 5 days on, 2 days off, or 4–8 weeks on, followed by a short break. This approach helps support long-term balance without overuse.
Safety, Side Effects, and Interactions
Tongkat Ali is generally safe when taken at recommended doses, but some people may experience mild side effects such as digestive discomfort, itching, or restlessness—especially if they exceed the suggested amount.
Contaminated or low-quality products may pose more serious risks, including exposure to harmful substances like mercury or lead. Always choose third-party tested supplements to ensure purity and safety.
Tongkat Ali is not recommended for pregnant or breastfeeding women, individuals under 18, or those with hormone-sensitive conditions such as certain cancers. People with severe anxiety, heart conditions, or those taking hormone therapies or blood pressure medications should also consult a healthcare provider before use.
Because Tongkat Ali may interact with hormone treatments, stimulants, or cardiovascular medications, it’s best to check with your doctor to confirm that it’s appropriate for your individual health needs.

Sourcing, Quality, and Buying Tips
Not all Tongkat Ali supplements deliver the same results. Poorly sourced or low-quality products may lack potency or contain unwanted contaminants.
Look for products that specify their standardization, such as 1:100 extracts or eurycomanone content, to ensure consistency and effectiveness.
Choose brands that offer:
- Third-party lab testing to verify purity and potency
- Clear dosage information on the label
- Good manufacturing practices (GMP certification)
These are signs of a trustworthy supplement designed with quality and safety in mind.
Red Flags to Avoid:
- Be cautious of products that:
- Don’t list extract ratios or active ingredients
- Make unrealistic or exaggerated health claims
- Lack verified customer reviews or transparency
- Are unusually cheap without quality guarantees
Choosing the right product helps you avoid ineffective supplements and ensures you get the full benefits of Tongkat Ali safely.
Conclusion
Tongkat Ali (Eurycoma longifolia) stands out as a powerful herbal supplement known for supporting hormonal balance, stress management, and physical performance. It offers a natural option for boosting energy, vitality, and resilience in daily life.
Whether you’re looking to support testosterone, improve mood, or enhance recovery, Tongkat Ali can be a valuable addition to your wellness routine—especially when paired with a holistic approach to brain and body health.
The CereFlex Labs AM/PM Protocol complements these benefits by supporting:
- Memory and cognitive function
- Brain health
- Protection from oxidative stress
- Balanced energy throughout the day
Together, Tongkat Ali and CereFlex Labs AM/PM Protocol provide full-spectrum support for physical and mental performance.
Start your wellness journey today—explore CereFlex Labs and consider adding Tongkat Ali to your routine for all-day vitality and balance.