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Longjack Purchase & Information

Alternative Names

Ali’s Walking Stick, Eurycoma, Eurycoma Longifolia Jack, Longjack, Long Jack, Malaysian Ginseng, Tongkat Ali Commonly known as Tongkat Ali or Longjack

Scientific Name

Eurycoma Longifolia

Why Do People Use Longjack?

Orally, Longjack extract is used for erectile dysfunction, impotence, infertility and increasing libido. It is also used for fever, malaria, ulcers, hypertension, tuberculosis, bone pain, cough, diarrhea, headaches, syphilis and cancer. Following are the basic reasons people use long jack: Sexual Dysfunction - Longjack (Eurycoma Longifolia) is very popular for the cure of a number of issues related with sexual dysfunction. People believe that use of Longjack Tongkat Ali can cure infertility, dysfunction of erection and impotence. Moreover, it is also very commonly used for increasing libido. Miscellaneous Diseases - Long jack is also used for the treatment of a variety of diseases including: • Fever • Cancer • Malaria • Ulcers • Syphilis • Hypertension • Diarrhea • Tuberculosis • Cough • Headaches • Bone pain

Is It Safe To Use?

There is insufficient evidence to rate the safety of Eurycoma Longifolia (long jack). Therefore, consult your health care provider before consuming any preparation of Longjack Tongkat Ali for any condition. Pregnancy and Lactation - There is insufficient information to determine whether the use of long jack is safe during pregnancy and lactation. Therefore, pregnant and lactating females should avoid its use.

How Effective Is Longjack?

There is limited information that could prove the effectiveness of consumption of Eurycoma Longifolia (long jack). However, some studies do suggest that its use is effective in following conditions: Hypogonadism - The information available in this regard is limited and not reliable. But the results of some preliminary studies have shown that use of 200 mg daily water based extract of Longjack Tongkat Ali on daily basis for three months can boost the level of testosterone in men having low level of this hormone in their blood. Results of studies have also shown that taking long jack extract increased the level of testosterone in the participant from an average value of 5.7 nmol/L to an increased level of an average 8.3 nmol/L. Moreover, men receiving Eurycoma Longifolia (long jack) extracts also reported alleviation of the symptoms of decreased testosterone. More research is needed in this area to rate the effectiveness of Longjack Tongkat Ali for the treatment of male sexual ailments.

How Longjack Works?

The applicable parts of long jack or tongkat ali are its root or bark. The most commonly used preparations are extracts and powders. These preparations are known as long jack powder, tongkat ali root extract or tongkat ali powder. The primary active constituents of Eurycoma Longifolia are eurycomanol, longilactone, 11-dehydroklaineanone, dehydrolongilactone, eurycomanone and others. The quassinoids present in Longjack Tongkat Ali are responsible for its bitter taste. Other important constituents of long jack include triterpenes, beta-carboline alkaloids, squalene derivatives, canthine-6-one, and biphenylneolignans. Quassinoid constituents of Eurycoma Longifolia possess a variety of pharmacological properties like antitumor, antichistosomal and plasmocidal activities. The extracts of Longjack Tongkat Ali have shown to have activity against the strains of malaria, including Plasmodium falciparum, in laboratory. This anti-malarial activity of long jack is attributed to its quassinoids content. Eurycoma Longifolia extracts seem to potential sexual drive, libido and sexual activities in animals. The results of some studies suggest that use of Longjack Tongkat Ali may have an androgenic effect. The use of long jack extracts seems to stimulate the growth of levator ani muscles. Studies on animal models have shown the anxiolytic effects of Eurycoma Longifolia. Some studies do point towards its potential toxic effects as well. Ethanol extracts are more toxic as compared to water or diethyl ether extracts. Another toxic extract is the butanol extract. Animal studies have shown that eurycomanone constituents in Longjack Tongkat Ali are responsible for its toxicity.

What Are The Side Effects /Adverse Reactions of Longjack?

Results of a clinical trial have shown that long jack is safe to use and this trial did not show any significant adverse reactions with its oral consumption. However, the assessment of adverse reactions and safety of Eurycoma Longifolia was not thoroughly assessed in that study. Longjack Tongkat Ali extracts have shown to increase the level of testosterone in the body. Results of both human and animal research has shown that its use might increase the levels of testosterone. If the levels of testosterone were to increase beyond the normal limits, it might cause several testosterone induced adverse effects including hepatotoxicity, resistance to insulin, acne and others.

How Longjack Interacts With Other Herbs and Supplements?

There is no known interaction of long jack with other herbs and supplements.

How Longjack Interacts With Drugs?

Propranolol - This interaction is of moderate nature but still caution should be observed. Results of a clinical trial showed that taking a single dose (200 mg) of a water based extract of Eurycoma Longifolia along with a single dose (80 mg) of Inderal (propranolol) can significantly decrease the level of propranolol. The levels of propranolol were decreased by 29% in that experiment. Moreover, the peak concentration of propranolol was decreased by 42%. The time taken by propranolol to reach its maximum concentration also showed a 86% increase. However, factors like elimination half life of propranolol were not affected. This shows that use of long jack decreases the level of propranolol in the blood by decreasing its absorption from the gut rather than increasing its clearance from the body. However, the way it decreases the absorption of propranolol from the gut is still unknown. It is also unclear if separating the administration would prevent this interaction from happening.

How Longjack Interacts With Foods?

There is no known interaction of long jack with foods.

How Longjack Interacts With Lab Tests?

Little is known about the interaction of Eurycoma Longifolia with lab results.

How Longjack Interacts With Diseases and Conditions?

There is no known interaction of long jack with diseases or conditions.

What Should Be the Dose/Administration of Longjack?

200 mg of water based extract of long jack has been used on daily basis for the treatment of conditions like hypogonadism.


Eurycoma Longifolia (Long jack) is a slender, tall, evergreen shrub-tree commonly found in the areas of Southeast Asia. It is commonly known as Tongkat Ali. It can be easily found in the jungle shops. The plant is very slow growing and takes as much as 25 years to mature fully. In Malaysia, the tea of this plant is consumed with a belief that its consumption can improve male sexual powers and virility. This plant has now been labeled as a protected species due to its high demand. There are some concerns about the safety and quality of the products containing this plant extracts due to their contamination with toxic heavy metals. Results of one study showed that at least 17% longjack products in Malaysia contain high levels of lead in them. Another study showed that long jack products contain high quantities of mercury.

General Certificate of Analysis (COA)

Specification sheet links below are a standard copy of the COA less the batch or lot number and manufactures dates. Specification sheet can be dated and should only be considered as a general information. Please contact and request an up to date COA if needed for specific updated information before placing order by filling out the contact form with product name and SKU number. If ordering quantities of twenty five kilos or more contact for availability.


These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.

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