{"id":302,"date":"2012-12-28T00:45:48","date_gmt":"2012-12-28T00:45:48","guid":{"rendered":"http:\/\/bodybuilding.ultimatefatburner.com\/?p=302"},"modified":"2015-02-15T09:15:26","modified_gmt":"2015-02-15T14:15:26","slug":"eurycoma-longjack-tongkat-review","status":"publish","type":"post","link":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/eurycoma-longjack-tongkat-review.html","title":{"rendered":"Tongkat Ali (Long jack, Eurycoma longifolia) Review: Effective For Boosting Testosterone Naturally?"},"content":{"rendered":"

You may see it called Tongkat Ali<\/strong>, Eurycoma longifolia<\/strong><\/em>, or even Long jack<\/strong>. More than likely, you’ll find it gracing the ingredients panel of your favorite natural testosterone booster — wedged in with other old time favorites like tribulus<\/a>, DHEA<\/a>, Testofen<\/a>, and so on.<\/p>\n

If you believe the sort of hype touted by advertisers in popular magazines and on the Internet, you could be forgiven for thinking that Tongkat, Eurycoma<\/em>, or whatever you want to call it, is used by body building’s elite professionals, and rivals anabolic steroids in its effectiveness.<\/p>\n

An evergreen tree native to Thailand, Malaysia and Indonesia, Tongkat Ali has been used by the native peoples for centuries as a natural aphrodisiac, general tonic and energy booster. But does it really have amazing anabolic and test-boosting powers?<\/p>\n

There’s one human study – a conference abstract in the British Journal Of Sports Medicine (Br. J. Sports Med. 37: 464-70<\/a>).<\/p>\n

It did have positive results, although no measurements for testoterone are reported.<\/p>\n

However, conference abstracts are not the same a full published article in a reputable journal.<\/p>\n

And, as Elissa pointed out to me, this study was done in 2003, so you’d think it would have been submitted to a journal by now if it were more than the paper it was printed on.<\/p>\n

OK, but what about the “studies” you’ve no doubt seen referenced by retailers selling Eurycoma \/ Longjack \/ Tongkat based products?<\/p>\n

Most of these refer to animal studies — specifically studies that show Tongkat’s ability to boost the libido of middle-aged to old rats (see Phytomedicine. 2003;10(6-7):590-3<\/a>, Exp Anim. 2000 Jan;49(1):35-8<\/a>, J Basic Clin Physiol Pharmacol. 2004;15(3-4):303-9<\/a>).<\/p>\n

Of course, I don’t need to tell you that such benefits don’t necessarily transfer from humans to rats. The other issue to consider is dosage. These rats were getting one heck of a dose — somewhere in the range of 200\/400\/800 mg\/kg, depending on the study. A human-equivalent dose<\/a> for a 180 lb. guy (approximately 82 kg) would need to take between approx. 2.7 grams (2,700 mg) to 10.6 grams (10,600 mg) of Tongkat Ali to get a comparable dosage.<\/p>\n

That’s outrageous and expensive. And it may not be entirely safe, either.<\/p>\n

Second, while an increase in rat libido is conclusively demonstrated in all studies, it is not clear whether this increase is a result of androgen production or some other mechanism.<\/p>\n

What do this really mean? What’s the bottom line here?<\/p>\n

Tongkat \/ Longjack \/ Eurycoma is an interesting substance to be sure. But it needs to be thoroughly studied on human subjects by independent researchers before any conclusive “test-boosting” claims can be made. For now, there simply isn’t the evidence available to indicate this is the case.<\/p>\n","protected":false},"excerpt":{"rendered":"

You may see it called Tongkat Ali, Eurycoma longifolia, or even Long jack. More than likely, you’ll find it gracing the ingredients panel of your favorite natural testosterone […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[58,59,57],"_links":{"self":[{"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/posts\/302"}],"collection":[{"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/comments?post=302"}],"version-history":[{"count":4,"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/posts\/302\/revisions"}],"predecessor-version":[{"id":1970,"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/posts\/302\/revisions\/1970"}],"wp:attachment":[{"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/media?parent=302"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/categories?post=302"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ultimatefatburner.com\/bodybuilding\/wp-json\/wp\/v2\/tags?post=302"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}