To check if a supplement is safe for drug testing, start by knowing that no one can promise it is. You can lower the risk: pick a product certified by a banned substance testing program, confirm it on the certifier's own site, and ask your athletics staff.
Checking a supplement at a glance
| Question | Answer |
|---|---|
| Can anyone confirm a supplement is safe for drug testing? | No. USADA says no one can tell that from a label, and no supplement is 100 percent risk free |
| Is reading the label enough? | No. In a 2025 study, 57% of products with a banned substance did not list it on the label |
| Can I check a supplement on Global DRO? | No. Global DRO checks medications and their ingredients, not supplements |
| What is the best single step? | Choose a product certified by a third party program that tests for banned substances |
| Is any supplement NCAA approved? | No. There are no NCAA approved supplements |
| Who should I ask? | Your athletics staff. The NCAA makes checking with them your responsibility |
Can anyone tell you a supplement is safe for drug testing?
No. The United States Anti-Doping Agency (USADA) says a label alone cannot prove a supplement is free from banned substances. It also says no supplement can be guaranteed to be 100 percent risk free.
The NCAA says the same thing in its own words. Supplements "are not well regulated and may cause a positive drug test". They may also be contaminated with banned substances not listed on the label. Contaminated means something got into the product that should not be there.
So the goal is not a guarantee. It is to lower the risk as far as you can, and to know who carries it. USADA says that when you use supplements, you always assume some risk of testing positive.
Why is reading the label not enough?
A study published in 2025 tested 200 sports supplements bought online in Australia for substances banned in sport:
- 35% contained at least one banned substance. Most of these were stimulants, substances that speed up your body.
- 57% of those products did not list the substance on the packaging or the website.
- Pre workouts, fat burners and muscle builders were the most likely to contain one.
Our write up of the study that found banned substances in one in three supplements covers it in full.
The banned list has limits too. The NCAA's list names drug classes and examples, not every substance. It is "neither a complete nor exhaustive list", and anything chemically or pharmacologically related to a banned class is also banned. Pharmacologically related means it acts on the body in a similar way. So a label can look clean against the list and still carry a risk.
What can each check tell you?
Each check answers one question and misses others. This table is our summary of the sources:
| Check | What it tells you | What it cannot tell you |
|---|---|---|
| Reading the label | What the maker says is inside | What is inside but not listed |
| The NCAA banned list | The banned drug classes and examples | Every banned substance. The list is not complete |
| Global DRO | The status of medications and their ingredients | Anything about supplements, which it leaves out because labels are unreliable |
| A certifier's database | Whether that product, and for some programs that lot, was tested | That the product is risk free |
| Drug Free Sport AXIS, through your school | An expert review of the label's ingredients | What is in the product itself, because it reviews the label |
| The FDA's health fraud list | Products the FDA has acted against | Most risky products. It covers "a small fraction" of them |
No single check covers everything. That is why the steps below use several.
How do you check a supplement, step by step?
- Ask whether you need it. USADA's first step is to check with a health professional or dietitian that the supplement has a clear nutritional benefit. If there is none, it asks why you would take the risk.
- Write down the exact product. Note the brand, the product name and the flavor. Then find the lot number on the package. A lot (or batch) is one production run. Take a photo of the number.
- Scan it in Varsity Stack. Scan the barcode or take a photo of the label to check the product against our certification database.
- Look for a banned substance testing seal. USADA recommends using only supplements certified by a third party program that tests for substances banned in sport. Our comparison of NSF Certified for Sport, Informed Sport and BSCG Certified Drug Free explains which seals test for banned substances and what each one checks. If your product has no seal, USADA suggests asking whether there is an equivalent product that is certified.
- Confirm it on the certifier's own site. A logo on the package is not the check. NSF lets you search certified products by name, keyword or lot number. Informed Sport tests every batch before release and asks you to search the batch number on its website.
- Read the whole label for red flags. The next section lists them.
- Ask your athletics staff. The NCAA says to review any supplement label with the right athletics staff before you take it. Your school can send the label to Drug Free Sport AXIS, the only label review service the NCAA subscribes to.
- Keep a record. Add the product to your stack in Varsity Stack, so you and your staff know what you take. Keep the photo of the lot number too.
Medications are a separate check. Global DRO is built to check medications and their ingredients, not supplements. Tell your athletics health care staff about every medication, prescribed or over the counter.
What red flags mean you should walk away?
USADA and Operation Supplement Safety (OPSS), the Department of Defense's supplement program, list warning signs. USADA says a product with even one of its red flags may be high risk:
- A high risk category. USADA names products sold for muscle building, weight loss, sexual enhancement, or "energy/pre-workout". Our guides to fat burners and pre workouts explain the risk in two of them.
- Steroid style claims. Words like "legal steroids" or "legal prohormones".
- A warning on the label itself. USADA flags warnings that a product may be prohibited in sport.
- "For research purposes only." USADA says some companies use this line to avoid FDA scrutiny.
- An "approved" claim. A label that says "FDA Approved", "WADA Approved" or "USADA Approved". These organizations do not approve dietary supplements.
- Promises of a quick fix. OPSS lists "quick fix" claims and hype like "secret formula". USADA counts phrases like these as a warning to weigh with everything else, not a red flag on its own.
- Chemical names instead of common names. USADA gives examples like names that contain "andro", "-diol" or "-dione".
- A listing on the FDA's health fraud list. Search the product and the company on FDA.gov. A product that is not on the list is not cleared, because the list covers only a small fraction of risky products.
Does a third party seal mean a supplement is safe?
No. Certification can lower risk, but cannot remove it. The NCAA says third party tested and low risk products "may be options", and that "complete elimination of risk is impossible". USADA calls certification "a step in the right direction", not a guarantee.
Two things to watch:
- Not every seal checks for banned substances. Operation Supplement Safety names four well vetted programs and says one of them does not test for substances banned in sport. It checks the ingredients, their amounts and contaminants instead. Our comparison of the programs shows which are which.
- Not every lot is covered by every program. Informed Sport says it is the only program of its kind that tests every batch before release. That is why step 5 checks the exact product, and the lot where the program lists it.
And no supplement is "NCAA approved". There are no NCAA approved nutritional or dietary supplements.
What about high school athletes?
The National Federation of State High School Associations (NFHS) covers products like protein powders, amino acids, creatine and caffeine. It says athletes should talk about their use with a knowledgeable health care provider. It adds that purity and the chance of contamination must be considered.
A parent, an athletic trainer or a doctor is the right first step. Your state association and school set their own policies.
Check a supplement with Varsity Stack
Use the free Varsity Stack app to start checking a supplement. Scan the barcode or take a photo of the label to check it against our certification database. Then add it to your stack so you and your staff know what you take.
For coaches, sports dietitians and athletic trainers: the team dashboard shows every athlete's stack and whether each product is certified, so staff can review what athletes take.
Request access for your program
Varsity Stack does not laboratory test supplements, and certification lowers risk without removing it.
For every NCAA banned class in one place, see our NCAA banned substances guide.
