ProveIt Supplements

Independent, evidence-based supplement analysis.

✓ Not Sponsored

✓ No Paid Reviews

✓ Science-Based

Company

  • About Us
  • Our Methodology
  • Contact
  • Blog
  • Authors

Legal

  • Privacy Policy
  • Terms of Service
  • Medical Disclaimer
  • Affiliate Disclosure

Resources

  • All Categories
  • Ingredient Database
  • Browse Supplements
  • FAQ

© 2025 ProveIt Supplements. All rights reserved.

Medical Disclaimer: The information provided is for educational purposes only and is not intended as medical advice. Always consult with a qualified healthcare professional before starting any supplement regimen.

Prove It
Browse SupplementsBlogAuthorsAboutMethodologyFAQ
Get Your Personalized Supplement StackSupplement Stack Quiz
Menu
HomeBrowse SupplementsBlogAuthorsAboutMethodologyFAQ
Back

Longjack Tongkat Ali Extract

Also known as: Tongkat Ali, Longjack, Malaysian Ginseng, *Eurycoma longifolia*

Overview

*Eurycoma longifolia*, commonly referred to as Tongkat Ali, is a flowering plant native to Southeast Asia. The roots are traditionally used for their medicinal properties, particularly as an aphrodisiac and a means to boost male fertility. Traditionally consumed in various forms such as extracts, teas, and capsules, it is known for enhancing libido and potentially improving testosterone levels. The active compounds in Tongkat Ali, including quassinoids and eurycolactones, are believed to contribute to its effects, although the full spectrum of its benefits remains under active investigation. Current research supports its potential in testosterone elevation, particularly in men with lower hormone levels, while indicating the need for more in-depth studies to confirm additional health claims and understand the mechanism of action.

Benefits

Research indicates that Tongkat Ali supplementation can significantly increase testosterone levels. A systematic review and meta-analysis demonstrated a substantial increase in total testosterone (SMD = 1.352, 95% CI 0.565 to 2.138, *p* = 0.001) mainly in hypogonadal men, who are particularly responsive to the supplement. Secondary benefits, such as improved erectile function and overall sexual well-being, have been reported, although the evidence is less robust. The clinical significance of testosterone elevation varies depending on initial hormone levels, and effects have been documented to manifest within 2 weeks to 6 months following supplementation.

How it works

The precise mechanism by which *Eurycoma longifolia* exerts its effects remains somewhat undefined. However, it is hypothesized that quassinoids and other bioactive compounds may stimulate testosterone production through interactions with the endocrine system. This interaction could potentially promote the maintenance of testosterone levels in men, especially those who experience testosterone deficiencies. Current understanding of its molecular mechanisms and absorption remains limited, necessitating further research.

Side effects

Tongkat Ali is generally viewed as safe when taken as directed; however, long-term safety data is sparse. While common side effects are not well-documented, animal studies have indicated potential liver effects, which may not consistently translate to humans. Uncommon side effects are reported in 1-5% of users, while rare adverse effects are less than 1%. Caution is advised for specific populations, particularly pregnant or breastfeeding women, and individuals with certain medical conditions. Additionally, due to limited data, potential drug interactions remain largely undefined, emphasizing the importance of consulting a healthcare provider prior to use.

Dosage

The typical dosage of Tongkat Ali varies, with a minimum effective dose starting around 100 mg/day. Optimal daily doses generally range from 100–600 mg, depending on individual health needs and supplement form. Although maximum safe doses have not been firmly established, studies suggest high safety margins based on animal research. Currently, no specific timing recommendations exist for supplement intake, but standardized extracts are preferred for consistency. Limited information on absorption means practical dosing considerations should be made on a case-by-case basis.

FAQs

What are the quality concerns with Tongkat Ali supplements?

Quality can vary significantly. Users should ensure they source products from reputable suppliers to avoid contamination risks.

Is Tongkat Ali safe for long-term use?

While generally deemed safe, long-term safety data is insufficient, and consultation with a healthcare provider is advised.

When is the best time to take Tongkat Ali?

No specific timing is recommended for taking Tongkat Ali; consistency is more important than timing.

What results can I expect from Tongkat Ali supplementation?

Users may experience increased testosterone levels, especially those with hypogonadism.

Does Tongkat Ali increase testosterone in healthy individuals?

Evidence suggests it may not have significant effects on testosterone levels in healthy men, contrary to some popular beliefs.

Research Sources

  • https://pmc.ncbi.nlm.nih.gov/articles/PMC9415500/ – This systematic review and meta-analysis demonstrated a significant increase in testosterone levels in men taking *Eurycoma longifolia*, especially in those with hypogonadism. Analytical methodology included exploring various randomized controlled trials to assess safety and efficacy.
  • https://pmc.ncbi.nlm.nih.gov/articles/PMC6274257/ – Reviewing studies on erectile function, this article noted potential benefits of Tongkat Ali but highlighted the limitation of available data due to a small number of studies.
  • https://pubmed.ncbi.nlm.nih.gov/36013514/ – This review emphasized the diverse bioactive compounds of *Eurycoma longifolia* and called for more extensive research on its pharmacological properties and safety profile.

Supplements Containing Longjack Tongkat Ali Extract

Longjack Tongkat Ali Extract 900 mg by NusaPure
73

Longjack Tongkat Ali Extract 900 mg

NusaPure

Score: 73/100
Test X180 V2 by Force Factor
63

Test X180 V2

Force Factor

Score: 63/100
Test X180 Ignite V2 by Force Factor
78

Test X180 Ignite V2

Force Factor

Score: 78/100
Test X180 Alpha V2 by Force Factor
63

Test X180 Alpha V2

Force Factor

Score: 63/100
Score! Hardcore by Force Factor
58

Score! Hardcore

Force Factor

Score: 58/100
ULTIMATE MAN® LONGJACK TONGKAT ALI by THE VITAMIN SHOPPE®
68

ULTIMATE MAN® LONGJACK TONGKAT ALI

THE VITAMIN SHOPPE®

Score: 68/100