Tongkat ali is in high demand. It is therefore no surprise that there always are new players who want to get into the game.

However, tongkat ali is also rare, and one of the most expensive herbal medicines. So, it is also no surprise that new players try to cut corners. For example by enhancing the strength that is lacking because their tongkat ali is low quality by putting in some Viagra, Cialis, or steroids. An increasing number of products has been removed from the market because they cheat the consumer. For same examples, see the links below.

Potent drug tadalafil found in shells of Tongkat Ali capsules
http://forum.lowyat.net/topic/1024543
The cached version can be read here: Potent drug tadalafil found in shells of Tongkat Ali capsules

Sex 'Boosters' For Men: More products expected to be banned
http://www.ergogenics.org/malepowerplus.html
The cached version can be read here: Sex 'Boosters' For Men: More products expected to be banned

Sibutramine and Sildenafil Banned From Traditional Medicine
http://www.blogtactic.com/2009/04/sibutramine-and-sildenafil-banned-from.html
The cached version can be read here: Sibutramine and Sildenafil Banned From Traditional Medicine

Etumax products banned by ministry
http://www.mmail.com.my/content/etumax-products-banned-ministry
The cached version can be read here: Etumax products banned by ministry

Tongkat Ali' Herb Pulled Off Shelves
http://www.pharmacy.nhg.com.sg/drug.asp?target=your
The cached version can be read here: Tongkat Ali' Herb Pulled Off Shelves

MHRA Concerned About Dangerous XP Tongkat Ali Supreme
http://www.ukmedix.com/cialis/mhra_concerned_about_dangerous_xp_tongkat_ali_supreme4817.cfm The cached version can be read here: MHRA Concerned About Dangerous XP Tongkat Ali Supreme

XP Tongkat Ali Supreme Foreign Product Alert
http://www.hc-sc.gc.ca/ahc-asc/media/advisories-avis/_fpa-ape_2009/2009-123-eng.php
The cached version can be read here: XP Tongkat Ali Supreme Foreign Product Alert

The best advice that I can give is to buy established brands of tongkat ali and tongkat ali extract, at best products that are properly licensed by health authorities. Such products may be more expensive, but that's still the better deal than gambling with one's health.