Tongkat ali is not banned in sports. It does not appear on the World Anti-Doping Agency’s prohibited list, and no major sports organization, including USADA or the NCAA, classifies it as a banned substance. However, that doesn’t mean athletes can use it without risk. The real concern isn’t the herb itself but what might be hiding inside a given product.
Why It’s Not on the Banned List
Tongkat ali supports testosterone production through a natural pathway: it stimulates the release of luteinizing hormone and follicle-stimulating hormone, which signal the body to produce more testosterone on its own. It may also limit the conversion of testosterone to estrogen by inhibiting the aromatase enzyme. This is fundamentally different from injecting synthetic testosterone or taking anabolic steroids, which introduce hormones from outside the body.
Crucially, tongkat ali does not appear to alter the testosterone-to-epitestosterone ratio in urine, which is the standard marker anti-doping labs use to flag testosterone abuse. A ratio above 6:1 suggests doping. In a study of 13 healthy male recreational athletes taking 400 mg of tongkat ali daily for six weeks, there was no change in this ratio. A systematic review in the journal Medicina concluded that because tongkat ali doesn’t breach international doping thresholds for testosterone, it is considered safe for athlete consumption from a regulatory standpoint.
What USADA Actually Says
USADA lists tongkat ali alongside other common herbal ingredients like ashwagandha, maca, and tribulus terrestris. The agency’s position is straightforward but cautious: it cannot evaluate every natural product and confirm which substances they contain. New compounds are constantly being identified in plants, and USADA cannot guarantee that any herbal product is free from prohibited substances.
The official guidance is that use of any natural product is “at the athlete’s own risk.” USADA recommends that athletes who choose to use herbal supplements only take products that have been independently certified as free from prohibited substances. Programs like NSF Certified for Sport and Informed Sport exist specifically for this purpose, testing batches for contamination with banned compounds.
The Real Risk: Contaminated Products
This is where things get serious for competitive athletes. The herb itself may be legal, but the supplement industry is poorly regulated, and tongkat ali products have been caught containing undeclared pharmaceutical ingredients. Singapore’s Health Sciences Authority found that a product called “XP Tongkat Ali Supreme,” marketed as a “100% natural” traditional herbal supplement, contained tadalafil, the active ingredient in the prescription erectile dysfunction drug Cialis. The manufacturer had impregnated the drug into the capsule shells rather than the powder inside, apparently to evade standard laboratory detection.
That product was sold without any pre-market approval or registration. It’s one documented case, but it illustrates a broader pattern in the supplement industry where herbal products are spiked with undeclared drugs or contaminated during manufacturing. For a tested athlete, consuming a product like this could trigger a positive test and result in a suspension, regardless of intent.
What the Performance Evidence Looks Like
If you’re considering tongkat ali for a competitive edge, the evidence for dramatic performance gains is thin. In a study of 18 young male rugby players taking 400 mg daily for seven days before repeated leg press exercises to failure, there were no differences between the supplement and placebo groups in peak force, strength, or muscle soreness. Salivary testosterone levels didn’t change either.
A separate trial involving 27 young resistance-trained men using a multi-ingredient product containing tongkat ali during a four-week high-intensity training program showed slightly greater increases in press weight (6 kg vs. 5 kg) and total weight lifted (34 kg vs. 24 kg) compared to placebo. But that product also contained beta-alanine, branched-chain amino acids, and a proprietary blend, making it impossible to attribute the results to tongkat ali alone.
The typical dose used in traditional medicine is 100 to 400 mg daily. Products sold online for bodybuilding and testosterone boosting often contain 1,000 to 1,600 mg per day, well above what most clinical studies have tested. Side effects at conventional doses are uncommon but can include nausea, abdominal discomfort, diarrhea, and headaches. Isolated reports of liver injury have surfaced in young male bodybuilders, though the possibility of unacknowledged anabolic steroid use in those cases weakens the link to tongkat ali itself.
How to Reduce Your Risk as a Tested Athlete
If you compete in a sport with drug testing and want to use tongkat ali, the single most important step is choosing a product certified by a third-party testing program. NSF Certified for Sport, Informed Sport, and BSCG (Banned Substances Control Group) all test supplements for contamination with prohibited substances. These certifications don’t guarantee zero risk, but they significantly reduce it.
Avoid products with vague proprietary blends, exaggerated marketing claims, or unusually high doses. Keep records of the specific product, lot number, and certification you relied on. If you’re subject to USADA, WADA, or NCAA testing, understand that anti-doping rules hold you strictly liable for what’s in your body. “I didn’t know it was in there” is not a defense that typically succeeds in a doping hearing, even when contamination is the likely explanation.