In 2021, Press Releases

As Seen In Nutritional Outlook

BRADENTON, FL – Annie Eng, CEO of HP Ingredients, has announced that LJ100® the premier Tongkat Ali (aka Eurycoma longifolia), is the subject of two new published studies showing clear and distinctive benefits for men’s health, notably in aging and fitness.


In the first study (Leitao, Maturitas), the six-month, double-blind, placebo-controlled, ramdomized trial investigated the sexual performance effects of ingestion of LJ100® Tonkgat Ali in middle-aged men with Androgen Deficiency of Aging Males (ADAM).


In this study, 45 men with ADAM were randomized into 4 groups (G1: control + placebo; G2: control + Eurycoma longifolia; G3: concurrent training + placebo; G4: concurrent training + Eurycoma longifolia); 22 received a 200 mg supplement of Eurycoma longifolia and 23 underwent the intervention with concurrent training 3 times a week for 60 minutes at progressive intensity.


The researchers looked at International Index of Erectile Function (IIEF-5), Aging Male Scale (AMS) and total testosterone. Erectile function demonstrated improvements in both interventions; however, the most significant results were obtained by men allocated to concurrent training + Eurycoma longifolia.


Here, they concluded that a 200 mg LJ100® ingestion with concurrent training for 6 months significantly improved the erectile function of men with ADAM.1


In the second published study (Leitao, Complementary Therapies in Clinical Practice), the same cohort was also examined for effects of 200 mg LJ100® consumption and muscle strength and cardiorespiratory fitness during the six months of concurrent training.


The researchers found that during the study period, the isokinetic peak torque of the knee extensors increased in the CT (14%) and CT + EL (17%) groups while the isokinetic peak torque of knee flexion increased in the CT + EL group only. For all participants, testosterone levels were correlated with isokinetic peak torque of knee extension and flexion. Subjects of the CT (27.3%) and CT + EL (36.1%) groups decreased the symptomatology of ADAM. This study demonstrated the benefits of CT and EL consumption as a non-pharmacological treatment for ADAM. 2

Improved cardiorespiratory function supports virility as it promotes healthier sexual endurance.


“These two studies overall validate our previous research on LJ100® in men, which is compelling news for formulators,” Eng said. “As more men are proactive about their health and no longer embarrassed to take measures to support their sexual abilities and virility, LJ100® is a powerful tool for this ever-growing audience.”


She continued, “LJ100® is the most researched and proven Tongkat Ali available, period. LJ100® is also proven safe and is sustainable, two key attributes that men would find attractive.”


Hame Persaud, HP Ingredients’ Executive Vice President, added, “HP Ingredients’ tagline is ‘Where Science Never Sleeps,’ and these new published human studies (with more forthcoming) represent our commitment to helping our brand partners stand out in the marketplace with fresh research demonstrating efficacy and safety in the nutraceutical solutions they seek to improve their lives and well-being.”



1 Leitao AE, Vieira MC, Pelegrini A, et al. “A 6-month, double-blind, placebo-controlled, randomized trial to evaluate the effect of Eurycoma longifolia (Tongkat Ali) and concurrent training on erectile function and testosterone levels in androgen deficiency of aging males (ADAM)” Maturiatas 2021 145 78-85


2 Leitao AE, Vieira MC, Gomes DA, “ Exercise associated or not to the intake of Eurycoma longifolia improves strength and cardiorespiratory fitness in men with androgen deficiency” Complementary Therapies in Clinical Practice 2021 42 101301




About HP Ingredients

HP Ingredients (HPI), a woman-owned corporation founded in 2001, shows and tells the enriching stories of health-promoting botanicals sustainably sourced globally. HPI researches, manufactures and supplies safe, unique, branded, patented, clinically proven herbal extracts with complete traceability. One of HPI’s main powers is the reinvestment into new research and certifications of its signature ingredients, collaborating with globally prestigious universities and research institutions. Signature ingredients include LJ100®, ParActin®, Bergamonte®, MaquiCare®, CitruSlim®, IQ100™, BlissCare™, NoMax®, NeuroActin®, and ProteoActin™.  Visit

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