Ashwagandha is not banned by any major sports anti-doping authority, including the World Anti-Doping Agency (WADA), the U.S. Anti-Doping Agency (USADA), or the NCAA. You can legally use it as a competitive athlete. However, the supplement carries real risks that could still end your eligibility, and the details matter.
What WADA and USADA Say
Ashwagandha does not appear on WADA’s Prohibited List, which means it’s permitted in Olympic, international, and most professional sports. USADA lists ashwagandha among common herbal ingredients and does not classify it as prohibited. That said, USADA makes clear that “the use of any natural product is at the athlete’s own risk,” and recommends athletes use only products certified by an independent third party as free from prohibited substances.
This “at your own risk” language is significant. Anti-doping agencies will not accept supplement contamination as an excuse if you test positive. The substance in your body is what matters, not what was on the label.
The NCAA’s Position
The NCAA does not specifically ban ashwagandha either, but its rules create a gray area worth understanding. The NCAA explicitly states there is “no complete list of banned substances” and warns athletes not to rely on its published list to rule out any ingredient. It also notes that no nutritional or dietary supplements are NCAA-approved.
The NCAA’s strongest warning is about contamination: “Many nutritional/dietary supplements are contaminated with banned drugs not listed on the label. Student-athletes have tested positive and lost their eligibility using nutritional/dietary supplements.” If an ashwagandha product happens to be contaminated with a stimulant like DMAA or an anabolic agent, you would fail the test and bear full responsibility. The NCAA places that burden squarely on the athlete.
Why Athletes Use It
Ashwagandha has attracted attention in sports because clinical trials show measurable performance benefits. A meta-analysis published in the Journal of the International Society of Sports Nutrition found that ashwagandha supplementation improved VO2 max (a key measure of aerobic fitness) in both athletes and healthy adults, with a mean improvement of about 3 ml/kg/min. Studies typically used doses of 300 to 500 mg twice daily over eight weeks and found improvements in both endurance capacity and muscle strength.
The herb also affects hormone levels. A randomized, placebo-controlled trial in aging males found that ashwagandha was associated with a 14.7% greater increase in testosterone and an 18% greater increase in DHEA-S compared to placebo. These hormonal shifts are modest compared to anabolic steroids, but they help explain why the supplement has become popular among athletes looking for a legal edge.
The Contamination Risk
The biggest practical danger for tested athletes isn’t ashwagandha itself. It’s what else might be in the bottle. Dietary supplements in the U.S. are not tightly regulated, and independent testing has repeatedly found products contaminated with substances that would trigger a positive drug test. This includes anabolic compounds, stimulants, and other banned agents that don’t appear on the label.
If you compete in a tested sport, the standard advice is to choose products that carry third-party certification, such as NSF Certified for Sport or Informed Sport. These programs test for contamination with substances prohibited in competition. A certified product doesn’t eliminate all risk, but it dramatically reduces it.
The U.S. military’s Operation Supplement Safety program notes that ashwagandha itself shouldn’t cause a positive result on a routine drug test, but adds the same caveat: “without laboratory testing there is no way to know the actual ingredients (or their amounts) in a product.”
Ashwagandha Is Restricted in Some Countries
While ashwagandha is legal in sports, it’s worth knowing that some countries have restricted its sale as a food supplement for health reasons unrelated to competition. Denmark banned ashwagandha supplements in 2023, with its food safety authority warning that the root “has negative effects on sex hormones and reproduction for both men and women” and can affect metabolism, the immune system, and the central nervous system. Germany has expressed similar concerns, though the supplement remains available there. Poland allows ashwagandha root products but caps the withanolide content (the active compounds) at 10 mg per daily portion.
These restrictions are about consumer safety, not anti-doping. But if you’re an athlete traveling internationally, be aware that purchasing or importing ashwagandha supplements may not be straightforward in every country.
How to Use It Safely as a Tested Athlete
If you’re competing in a drug-tested sport, a few practical steps will protect your eligibility. First, choose a product with third-party certification for sport. Second, check the label for any other ingredients that might be prohibited in your specific sport or league. Third, if you compete under USADA, you can contact their Drug Reference Line to ask about a specific product before you take it.
For NCAA athletes, the safest step is to check with your team’s athletic staff before using any supplement. Your school’s sports medicine or compliance department can help you assess the risk of a specific product and may have a list of lower-risk options they’ve already vetted.