Tongkat Ali (Eurycoma longifolia)
Tongkat Ali is a traditional Southeast Asian herb that has been studied for its potential to support healthy testosterone levels, stress management, and male fertility. Research suggests it may help with mood regulation and energy levels, though most studies are small and short-term. Dietary supplements are not FDA-approved to diagnose, treat, cure, or prevent any disease. Consult your doctor before starting any supplement.
Key Takeaways
- Tongkat Ali may help support healthy testosterone levels and stress management, with most research showing benefits at 200-400mg daily of standardized extract
- Clinical studies suggest potential improvements in mood, energy, and male fertility, though research is still limited and primarily involves short-term studies
- The supplement works by potentially supporting the body's natural hormone production rather than directly supplying hormones
- Quality varies significantly between products due to extraction methods and potential contamination with heavy metals or adulterants
- Benefits may take 4-12 weeks to become apparent, making it more suitable for long-term rather than immediate use
How to Take
Typical Dosage
200-400mg daily of standardized extract, based on clinical research. Most studies used 200mg daily for up to 8 weeks. Higher-quality standardized extracts may require lower doses.
When to Take
Can be taken with or without food. Some users prefer taking in the morning to avoid potential sleep disruption.
Why It Matters for Ages 50+
Men over 50 often experience natural declines in testosterone levels, and Tongkat Ali has been studied for supporting healthy hormone balance in this age group. Additionally, the stress-management properties may be beneficial for adults dealing with age-related life changes and health concerns. However, this demographic is also more likely to take multiple medications, making careful medical supervision essential.
What to Look For
- Look for standardized water extract (like Physta or LJ100) rather than raw root powder for better bioavailability and consistency
- Choose products with third-party testing certificates for purity, potency, and heavy metal contamination
- Verify the extract ratio (typically 100:1 or 200:1) and eurycomanone content, which should be clearly labeled
- Select products stored in dark, sealed containers and check expiration dates as potency can degrade over time
- Avoid products making unrealistic claims or those that don't clearly identify the extraction method used
Potential Interactions
Be aware of these potential interactions:
- Diabetes medications (metformin, glipizide, miglitol): May enhance blood sugar-lowering effects, requiring monitoring
- Beta-blockers (propranolol): May decrease bioavailability of the blood pressure medication
- Immunosuppressants (leflunomide): May interact with immune system effects - avoid combination
- Hormone medications: May interact with treatments affecting testosterone or estrogen levels
- Blood pressure medications: Potential interactions due to cardiovascular effects - monitor closely
- Consult your pharmacist if you take any prescription medications, as interactions are not fully documented
Who Should Avoid This Supplement
- Individuals with hormone-sensitive conditions such as prostate cancer, breast cancer, or other hormone-dependent cancers
- People with liver disease or elevated liver enzymes, as isolated cases of liver injury have been reported
- Those with autoimmune conditions or taking immunosuppressive medications due to potential immune system effects
- Pregnant and breastfeeding women, as safety data is insufficient for these populations
Recommended by Experts

“Takes 400mg, cycled for testosterone support”
Frequently Asked Questions
Most studies use 200-400mg daily of standardized extract, typically taken with meals to improve absorption. It's generally recommended to cycle usage (5 days on, 2 days off) to maintain effectiveness.
Most research shows benefits appearing after 4-12 weeks of consistent use. Stress and mood improvements may be noticed sooner, while testosterone and fertility benefits typically require longer supplementation periods.
Tongkat Ali is generally well-tolerated, but some people may experience mild insomnia, irritability, or restlessness, especially when starting. Taking it earlier in the day can help minimize sleep disruption.
Standardized extracts (like Physta or LJ100) are concentrated and tested for active compounds, making them more reliable and potent than raw root powder. Extracts also have more clinical research supporting their use.
While most research focuses on men, some studies show Tongkat Ali may benefit women's stress levels and energy. However, women with hormone-sensitive conditions should consult their healthcare provider before use.
Choose products with third-party testing certificates and avoid unusually cheap options. Look for reputable brands that specify their extract type and provide certificates of analysis showing purity and active compound content.
