LongJack supplement extract benefit and side effects, dosage, product and root powder - Tongkat Ali extract
Works in men and women
June 23 2017 by Ray Sahelian, M.D.

Longjack (Eurycoma longifolia jack, Tongkat Ali) is a small tree found in the jungles throughout Malaysia and Southeast Asia. Natives consider every part of the tree as medicine. In southeast Asia, Longjack is used as a tonic, to treat malaria, and as an aphrodisiac. In the old days, the roots had to be brewed for long hours to get a bitter extract. Now this plant is conveniently packed in pill or "tea-bag" form and mixed with regular coffee or tea. Longjack in the form of coffee and tea is now sold in Malaysia's ubiquitous roadside hawker stalls, and supermarkets.

Aphrodisiac benefit, libido booster, helps with erections and circulation
There have been quite a number of studies that have shown it to have sex-boosting properties. The effects were studied on the libido of male rats after giving them with several dosages of longjack daily for 10 days. Results showed that longjack produced a dose-dependent increase in mounting frequency, that is, the number of times the male rats tried to mount the female rats increased as the dose given to the rats increased. In addition, the rats displayed more frequent and vigorous licking and anogenital sniffing towards the receptive females. Furthermore, the rats dosed with longjack spent more time grooming their genitals compared to the rats who were not given the plant. Genital grooming may be interpreted as masturbation. The researchers noticed another interesting finding: while the rats who had not received the plant showed normal behavior within the cage such as exploration and climbing the cage wall, the rats given longjack stayed around the females instead of exploring the cage. Longjack also increased the frequency of the rats' erections.

Longjack supplement extract - Aged root powder and LJ100 Longjack extract capsules
You have the option to take Longjack root powder supplement, LJ100 extract supplement, or preferably Passion Rx which is an effective combination of both, plus more than a dozen aphrodisiac herbs. It is difficult to predict in any one individual which product will work best. The surest way is to try them separately to see which one is most suitable to your own body chemistry. Passion Rx has a very high rate of reorder.

Buy Longjack supplement or extract supplement, Passion Rx with Yohimbe sexual enhancing formula or other sex improving herbs
Buy Longjack supplement extract pill or other natural aphrodisiacs

Supplement Facts
Serving Size: 1 Capsule
Servings Per Bottle: 60 Capsules
  Amount Per Capsule % DV
Tongkat Ali Root Powder (Eurycoma Longifolia Jack root) 200 mg

Dosage: One Tongkat ali Longjack capsule in the morning on an empty stomach. 

Suggested Use, how to take, dosage: As a dietary supplement, take one Longjack root powder capsule of 200 mg or one LJ100 25mg capsule in the morning before breakfast or as recommended by your health care provider. For long term use, take every other day with a full week off each month. Results may vary depending on age and metabolism. Some may require 400 mg of the powder or 50 mg of LJ100. Longjack side effects are more common with higher dosages. It may be preferable to take lower doses of this herbal aphrodisiac and have it work slower in order to avoid adverse reactions mentioned below.

Longjack side effects, danger, safety
I have read articles in health magazines promoting this aphrodisiac that it has wonderful benefits with absolutely no side effects. This is not my experience. Even though it is quite useful as an herbal aphrodisiac, it does have shortcomings. One of the side effects of high dose Longjack root powder or extract is that it can cause insomnia. Lack of adequate sleep, when repeated over many days, can lower sex drive. So, it's better to take smaller amounts over a few day period than a very high amount in one day.
   I have personally tested Longjack powder and several extracts in different dosages and realized that it has additional side effects not often mentioned in articles or in research papers. Many of my patients have given me feedback regarding their personal experiences with Longjack. I am convinced that high doses can cause increased body temperature, which is not a good thing during hot and steamy days without air conditioning, but a good thing if you live in Alaska or enjoy taking a walk outside in cool weather. Some people find that when they take a high dose, they become restless and impatient, perhaps easily angered. Therefore, you don't want to swallow several capsules of Longjack  if you expect to be driving in heavy traffic. So, being patient and taking lower doses is the preferred option.

Passion Rx is formulated for Men and Women with Longjack root and extract
This all natural herbal formula provides results that are noticed within two to four days, and improve over several days of use. Dr. Sahelian and his research staff have tested various doses and extracts of dozens of herbs from a number or raw material suppliers to determine the ideal dosage and combination for optimal aphrodisiac properties with the fewest side effects. After years of research, an effective proprietary blend with several herbal extracts from the best raw material suppliers has been developed. This unique aphrodisiac blend is a close kept secret only known to the doctor and his research staff. In recent years science has made breakthroughs in the understanding of sexual dysfunction. But, for hundreds of years, civilizations around the world have known about locally grown herbs that achieve wonderful results with far fewer side effects than prescription drugs. The potent herbal extracts in Passion Rx include ashwagandha, catuaba, cnidium monnieri, coleus forskohlii, horny goat weed, longjack, maca, mucuna pruriens, passion flower, rhodiola, shilajit, and
tribulus terrestris.


Longjack extract - LJ100 - 25 mg capsule

LJ100 is a high quality, standardized Longjack extract. It is prepared for improving energy, increasing stamina, physical endurance, and sensual performance.

Supplement Facts: Eurycoma Longifolia (standardized to contain 40% glycosaponins and 22% eurypeptides)

Suggested Use: For libido enhancement, take one capsule two or three times a week which is a safe dose.

What the research says and clinical trials:

Pharmacogn Rev. 2016. Review Ergogenic Effect of Long Jack, Eurycoma Longifolia. Eurycoma longifolia is commonly distributed in the Southeast Asia and Indo-China. In particular, the aqueous extract and decoction of its root are a well-known folk medicine which enhances sexuality, fertility, and antiaging. Furthermore, it has been shown to possess anti-inflammatory, antimalarial, antimicrobial, and antioxidant properties. Its common phytochemical components include alkaloids, flavonoids, phenolics, saponins, tannins, and triterpenes. This plant is rich in various quassinoids including eurycolactone, eurycomalactone, eurycomanol, eurycomanone, and eurycomaoside all of which has been reported to contribute to its remedial properties including increased muscle strength, endurance in cycling time, and reduced anxiety and stress. Based on established literature on the health benefits of Longjack, this review article has attempted to compile it to be one of the choices of ergogenic plants.

Longjack and cancer treatment
Beta-carboline alkaloids isolated from longjack, have demonstrated significant cytotoxicity against human lung cancer (A-549) and human breast cancer (MCF-7) cell lines. How useful it is in treating or preventing human cancer is not known at this time.

PLoS One. 2014. Anti-Tumor Activity of Eurycoma longifolia Root Extracts against K-562 Cell Line: In Vitro and In Vivo Study.

Interestingly, scientists have found that, in addition to its sex-enhancing effects, compounds within longjack have anti-malarial properties.

Cytotoxic and antimalarial constituents from the roots of Eurycoma longifolia.
Bioorg Med Chem. 2004.
Sixty-five compounds were isolated from the roots of Longjack. Among these isolates, four quassinoid diterpenoids were reported from natural sources for the first time, namely eurycomalide A, eurycomalide B, dihydroxyeurycomanol, and 5alpha, 14beta, 15beta-trihydroxyklaineanone. Certain ompounds demonstrated strong cytotoxicity toward human lung cancer cell lines and others toward human breast cancer cell lines. Two compounds displayed potent antimalarial activity against the resistant Plasmodium falciparum.

Mechanism of action
Recent studies indicate that the root contains several compounds including beta-carboline alkaloids and quassinoid-type glycosides. How these compounds and many others in tongkat ali influence the human sexual response is not clearly understood at this time. I have read promotional material by some vitamin companies regarding longjack that it enhances testosterone production, and this may be true, however I have not been able to definitively confirm this claim. Even if longjack powder or longjack extract do stimulate or help release testosterone, we don't know at this time whether this would continue over time or whether testosterone supply would be used up with repeated, daily longjack use.

Tongkat ali is sold as a powder, and in capsules, sometimes mixed with other herbs. There are a number of longjack extracts available in various potencies, and since each company will have a different way of extracting, it is difficult to give dosages that would be consistently effective.

Longjack side effects, safety, danger
High doses of
longjack cause insomnia and increased body temperature along with restlessness and irritability. Long term side effects of Longjack on human health are not known. Do not take this herbal extract more than 2 or 3 days in a row. See natural ways to reduce symptoms of insomnia.

Have you ever heard of a stuffy nose occurring in longjack users?
   A. I have not. Viagra-like substances added to certain sexual enhancing herbal formulas may cause a stuffy nose. If you take a natural over the counter herbal aphrodisiac that causes nasal stuffiness, it may be laced with a pharmaceutical impotence drug.

Longjack research studies
Eurycoma longifolia Jack enhances sexual motivation in middle-aged male mice.
J Basic Clin Physiol Pharmacology. 2003.
Longjack was investigated for sexual motivation activity in adult, middle-aged male mice. Each mouse received 500 mg/kg of one of 4 fractions of Longjack, viz. chloroform, methanol, butanol, and water, whereas the mice in the control and yohimbine groups received 3 ml/kg of normal saline and 30 mg/kg of yohimbine daily respectively for 10 days. The results show a transient increase in the percentage of male mice responding to the right choice after chronic consumption of the fractions with 50 percent of the adult middle-aged male mice treated with Longjack and yohimbine scoring the right choice after 8 and 5 days post-treatment respectively. This study has shown that Longjack continues to enhance sexual motivation in adult, middle-aged male mice and in retired breeders.

Effect of Eurycoma longifolia Jack  on libido in middle-aged male rats.
J Basic Clin Physiol Pharmacol. 2002.
The effect of increasing doses of various fractions of longjack extracts on libido was examined in middle-aged male rats. The results showed that a high dose (800 mg/kg) of all longjack extracts significantly increased mount frequency over that of untreated controls, but had no effect on the frequency of intromission or ejaculation. The results of this study show that longjack extracts can increase libido in middle-aged male rats.

Breast cancer
Q. Are components of LJ100 ( longjack extract ) closely enough related to testosterone or androstenedione that my wife ought to consider not taking LJ100 to be on the "safe side" of developing breast cancer?
   A. We are not in a position to say whether a person should or should not take a particular supplement. As to Longjack LJ100, if it does release testosterone, it most likely is transient as opposed to a constant amount that is normally present in the bloodstream. At present we have no reason to be concerned with this herb causing or promoting cancer.

Female sexual dysfunction treatment
Is longjack helpful in women with female sexual dysfunction?
   A. As long as low dosages are used, longjack could be appropriate for women with female sexual dysfunction. many women report benefits.

I think I figured out why Long Jack may have lowered my libido. I recently went to an endocrinologist and found out that my testosterone levels are at 271. This is pretty low considering I am a 26 year old male. My SBGH is 11. From my understanding SBGH is inhibited when people take Long Jack. I'm assuming this is why my libido lowered. Right now I am very troubled because I recently had all these test results and they don't look normal. I am awaiting a response from my Endocrinologist as he is away on vacation. I have never taken steroids or done any drugs. I have never smoked in my life and only have a drink in moderation. The only drug that I have ever taken was ACCUTANE for over a year. I am reading studies showing that it can lower testosterone. This was years ago, but still. Pharmaceutical drugs now a days are very potent. I am really beginning to wonder if my testosterone levels have been on the decline ever since. Here are some readings:
DHEAS : 333
Estradiol: 19
Cortisol AM : 9.5
Testosterone : 271
SHBG : 11
Free Androgen Index: 85.4
ACTH : 9
IGF-1: 146

As you can tell a lot of these are not where they should be for someone that's 26 years old. I have a fairly clean diet as I eat a lot of organics so something is out of balance. I appreciate you guys getting back to my on the LongJack but I think that something else is going on! Too bad Dr. Sahelian is so far away. I wish you guys the best. Take care and keep up the great work.
   A. It is possible that excessive use of longjacki may alter hormone levels although more research is needed to confirm the initial findings.

In Japan, It is said that Longjack supplements have no side effects. I recently became insomnia. I took Longjack suppliment Action Labs Longjack power MaX200 daily for two weeks. I stopped to take this suppliment completely but since then I have been suffering from insomnia, For the present, I can work for as usual during the day. Especially when I feel sleepy in the night, I feel chilly and wake and I also feel the need to defecate in the night. Those are very irritating conditions for me. Regrettably, there is no expert about longjack in Japan. If I continue to put up with this condintion for more days, insomnia will be disappered and those conditions wil be improved? Plese let me Know what should I do?
   Sleep disturbance is a common adverse effect of high dosages. Time will take care of the symptoms.

To learn more about tongkat ali for sexual health, see YouTube http://www.youtube.com/watch?v=jO9PHdGai9o