Tongkat Ali for Reproductive Health
Semen parameters improved in men with idiopathic infertility in a single-arm study.
Overview
Verdict
How It Works
Dosing & Protocol
Typical dose
- Recommended dose
- 200-400 mg/day of standardised water-based extract for at least 3 months
- Expected timeframe
- 3 months
Protocol
- form
- Standardised water-based Eurycoma longifolia extract such as Physta or LJ100; avoid unstandardised root powders given documented lead contamination
- duration
- 3 months minimum, matching the spermatogenesis cycle
- co factor
- Take in the morning with food, since evening doses may disturb sleep. Evidence is mixed. The most cited trial, by Tambi and colleagues, gave 200 mg/day of standardised extract to 350 men with idiopathic infertility for up to 9 months and reported improvements in semen volume, sperm concentration and motility, with 11 spontaneous pregnancies. Animal work supports effects on spermatogenesis and testosterone. The problem is that the positive trials are largely open-label, single-centre, Malaysian and industry-linked, with few independent replications and limited placebo-controlled data.
- titration
- Up to 400 mg/day; most trials used 200-300 mg/day
- starting dose
- 200 mg/day of a water-based extract standardised to eurycomanone, taken in the morning with food
Evidence
What the studies say
No studies are yet linked to both Tongkat Ali and Reproductive Health.
Safety
Caveats
The evidence base is dominated by open-label industry-linked studies from a single research group, which is a substantial limitation for a fertility claim. Proper assessment matters more: a couple not conceiving after 12 months, or 6 months if the female partner is over 35, should be investigated, since varicocele, obstruction, hormonal and genetic causes need identifying and treatment success declines with delay. Stopping smoking, limiting alcohol, avoiding testicular heat, treating obesity and stopping anabolic steroids - which suppress spermatogenesis profoundly and sometimes permanently - all matter more. Safety of tongkat ali: generally well tolerated at 200-400 mg/day, with insomnia, restlessness and irritability reported. Lead contamination has been found in a substantial proportion of commercial products in Malaysian surveys, which is a serious concern when trying to conceive - use third-party tested standardised extracts only. It may lower blood glucose and affect blood pressure medication. Avoid in hormone-sensitive cancers and prostate disease. Avoid in pregnancy and breastfeeding. Long-term safety is not established.
Less likely to help if
Medical Disclaimer
The information provided on this website is for educational and informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any supplement regimen.
Individual results may vary. The statements on this website have not been evaluated by the Food and Drug Administration. Products and information are not intended to diagnose, treat, cure, or prevent any disease.