LJ100®

LJ100® is the only standardized, clinically-backed Tongkat Ali extract patented to improve male performance and testosterone levels.

LJ100 is a branded extract of the Asian traditional herb Tongkat Ali, commonly used to boost male sexual health, physical performance, and vigor. LJ100 has several advantages over basic Tongkat Ali supplements:

• Patented. LJ100 is a patented extract devised through a research partnership between MIT and the Government of Malaysia.
• Clinically Researched. LJ100’s numerous benefits are backed by over a dozen human studies.
• Standardized. Guaranteed to contain 40% glycosaponins, 22% eurypeptides, and 1% eurycomanone from Tongkat Ali to ensure efficacy.

Overview

LJ100 is a patented, proprietary extract of Eurycoma longifolia, a medicinal tree native to Southeast Asia. Also known as Tongkat Ali and Longjack, the roots of this herb are traditionally used to boost energy and libido, and remedy a wide range of ailments.

LJ100 is made through a patented process developed by a joint group of researchers from the Massachusetts Institute of Technology (MIT), the Forest Research Institute of Malaysia (FRIM), and the University of Malaya. This process ensures that unlike basic Tongkat root extracts,  LJ 100 is guaranteed to contain 22% eurypeptides, 40% glycosaponins, and 1% eurycomanone – the plant’s main bio-active ingredients.

LJ100 has been the subject of numerous clinical studies, which report improvements in testosterone levels, sexual function, energy, exercise performance, stress, and more.

LJ100 Patents

LJ100 is protected by a patent issued to the Government of Malaysia and the Massachusetts Institute of Technology (MIT), which supports the use of LJ100 for improving sexual dysfunction, male infertility, and testosterone levels (US patent 7132117).

This patent includes a proprietary preparation process during which Tongkat Ali root gathered from the Malaysian rainforest is pulverized, boiled to make an aqueous extract, filtrated, concentrated, and finally freeze dried. This results in a standardized powder extract containing 40% glycosaponins, 22% eurypeptides, and 1% eurycomanone.

LJ100 Nutritional Supplement Uses

As a standalone supplement, LJ100 is primarily used to enhance sexual health and libido, particularly in men suffering from low testosterone levels, infertility, and erectile dysfunction. In addition, it is also used as an ingredient in:

Testosterone Boosters

Testosterone booster supplements frequently include LJ100 because of its research-proven ability to increase testosterone levels and male sexual health. More specifically, LJ100’s patent suggests that it improves both testosterone production and release in the testes. In fact, LJ100 is considered such an effective testosterone booster that some researchers propose its use as a safe, natural alternative to testosterone replacement therapy in aging men. ¹

More on LJ100’s and Tonkat Ali’s effects on testosterone.

Pre-Workout Supplements

LJ100 also has the potential to be used as an ingredient in ergogenic supplements, especially in the context of bodybuilding. As we already noted, it has been clinically proven to boost testosterone – an anabolic hormone that improves athletic performance and increases muscle mass in both men and women – as well as measures of physical performance such as grip strength.

LJ100 Research

Human Research

LJ100 (300 mg) appears to improve physical function, libido, and sexual performance in men

The aphrodisiac effects of LJ100 were explored in this randomized, double-blind, placebo-controlled study. A total of 109 men (aged 30-55) were given placebo or LJ100 (300 mg) daily for 3 months. The LJ100 group improved on questionnaires of physical functioning, erectile function, and libido, as well as measures of sperm motility and semen volume.

• The researchers concluded that “For the first time a placebo-controlled clinical trial with 109 randomized male subjects demonstrated for a freeze-dried water extract of the roots of Eurycoma longifolia (Physta), significant improvements in libido, sexual performance, satisfaction, and physicial functioning.” ³

LJ100 may enhance exercise performance by maintaining healthy cortisol and testosterone levels

In this placebo-controlled study, 30 cyclists were given placebo or LJ100 30 minutes before a 24-hour mountain biking event. The men were tested 8 times over the time period, revealing that those given LJ100 had 16.4% higher testosterone levels and 32.3% lower cortisol (stress hormone) levels.

• The researchers concluded that “LJ100 promotes an anabolic state by maintaining low normal levels of cortisol and high normal testosterone level during intense endurance exercise.” ⁴

LJ100 (400 mg) may improve testosterone and muscle strength in older adults

This pilot study examined the physical performance benefits of LJ100 in the elderly. A total of 25 physically active men and women (aged 57-72) were given LJ100 (400 mg) daily for 5 weeks. Supplementation increased testosterone levels and muscular force (as measured by a handgrip test) in both men and women.

• The researchers concluded that “The study affirms the ergogenic benefit of TA through enhanced muscle strength.” ⁵

LJ100 (200 mg) appears to raise testosterone and improve well-being in older men with hypogonadism

This study tested the effects of LJ100 in older men with late-onset hypogonadism (LOH), a condition characterized by low testosterone levels. A total of 76 men with LOH were given LJ100 (200 mg) daily for a month. The supplementation raised testosterone to healthy levels and improved scores on the Ageing Male Symptom Scale.

• The researchers concluded that “…Tongkat ali extract appears to be useful as a supplement in overcoming the symptoms of LOH and for the management of hypogonadism.” ⁶

LJ100 (200 mg) plus an antioxidant appears to improve sexual performance in men

This randomized, double-blind, placebo-controlled study examined the effects of LJ100 plus an antioxidant on sexual performance. A total of 26 men (aged 40-65) with mild erectile dysfunction (ED) took placebo or LJ100 (200 mg) plus Polygonum minus (100 mg) tablets daily for 12 weeks. The LJ100 group improved in measures of sexual function such as the Sexual Intercourse Attempt diary, Erection Hardness Scale, Sexual Health Inventory of Men, Aging Male Symptom Scale, and overall libido. In addition, there were also trends for reduced body fat and increased testosterone in the LJ100 group.

• The researchers concluded that “Supplementation for twelve weeks with Polygonum minus and the proprietary Eurycoma longifolia extract, Physta, was well tolerated and more effective than placebo in enhancing sexual performance in healthy volunteers.” ⁷

LJ100 (200 mg) may enhance immune function

This randomized, double-blind, placebo-controlled study examined the effects of LJ100 on immune function. A total of 83 middle-aged Japanese participants were given rice powder (placebo) or 200 mg of LJ100 (under the brand name Physta) daily for 4 weeks. The LJ100 group improved on several measures of immune function, including Scoring of Immunological Vigor (SIV), immunological grade, and number of helper T cells.

• The researchers concluded that “…ingestion of the root water extract of TA (Physta®) enhances comprehensive immunity in both middle-aged men and women.” ⁸

LJ100 Dosage

• Single-ingredient LJ100 supplements contain 25-100 mg
• Clinical research studies typically use 100-400 mg doses, with 200 mg being the most common
• LJ100’s manufacturers recommend taking 50-100 mg for weight loss and 100-200 mg for sexual function, aging, and exercise performance