Download the free printable supplement intake log (PDF)
A supplement log for a drug tested athlete needs more than a product name and a check box. It should record the exact lot or batch number on the container, whether that lot is certified by a banned substance testing program, and which staff member reviewed it. The free log above has a column for each, plus a weekly check off page.
Most printable supplement trackers are built for daily vitamins. They help you remember to take something. They do not help you answer the question a positive test would raise: what exactly was in the container, and did anyone check it first?
Why athletes need a different kind of log
The NCAA puts the responsibility on the athlete. Its banned substances list says it is the student athlete's responsibility to check with the appropriate athletics staff before using any substance, including supplements [1]. It also warns that supplements, including vitamins and minerals, are not well regulated, may be contaminated with banned substances not listed on the label, and are taken at the athlete's own risk [1].
A general tracker cannot help with any of that. A log that records the lot number, the certification check and the staff review gives you and your athletic trainer or sports dietitian something concrete to work from.
The National Institutes of Health Office of Dietary Supplements publishes its own printable form, My Dietary Supplement and Medicine Record. It records the name, dose, how often you take it and the reason for each supplement and medicine, and is meant to be shared with your health care providers [2]. The Varsity Stack log is built for the drug testing side, and athletes who take medications can use both.
What each column is for
| Column | What to write | Why it matters |
|---|---|---|
| Product and brand | The name exactly as printed, including the flavor | Brands sell many similar products, and certification applies to specific ones |
| Serving on the label | What the label says a serving is | Records what the product states, so staff can review it |
| Where and when bought | The store or website, and the date | Helps trace a container if a product or lot is recalled |
| Lot or batch number | The code printed on the container | Certification can depend on the exact batch |
| Expires | The date on the container | An expired container should come off the list |
| Certification | The program, and the date you checked it on the certifier's site | A logo on a tub is not the same as a confirmed listing |
| Why I take it | The reason, and who suggested it | Gives staff context for their review |
| Reviewed by | The staff member's name and the date | Shows the product was checked before you started |
| Notes | When you started or stopped, and any reactions | Keeps a history you can share |
How to fill it in
- Write down every product, not only the ones you think are risky. The NCAA warning covers vitamins and minerals too [1]. Include anything a teammate or coach handed you.
- Find the lot or batch number. It is usually printed near the expiration date on the bottom, lid or back label.
- Check the certification on the certifier's own site. NSF lets you search Certified for Sport products by name, keyword or lot number [3]. Informed Sport tests every batch of a certified product before release and asks athletes to search the batch number on their product [4]. BSCG Certified Drug Free also certifies at the lot level, as our BSCG guide explains.
- Take the log to your athletic trainer or sports dietitian before your first serving. NCAA athletes can also have label ingredients reviewed through Drug Free Sport AXIS, the only service the NCAA subscribes to for that review [1]. Our guide to AXIS covers how it works.
- Use the weekly page to check off what you take. It turns the log into a record of what you actually used, not just what is in your cupboard.
An example entry
This row is made up to show the format. It is not a real product or a recommendation.
| Product | Serving | Bought | Lot | Expires | Certification | Why | Reviewed by |
|---|---|---|---|---|---|---|---|
| Brand X whey protein, vanilla | 1 scoop | Online store, 9/2 | A1234B | 08/2027 | NSF Certified for Sport, lot checked 9/3 | Recovery, suggested by team dietitian | J. Smith, RD, 9/5 |
For high school athletes and parents
High school sport is not run by the NCAA, but the same habits apply. The National Federation of State High School Associations advises that athletes discuss supplements such as creatine and protein powders with a knowledgeable health care provider, and that product purity and contamination must be considered [5]. A filled in log is an easy way to start that conversation with a parent, athletic trainer or doctor. It is a record, not a plan: it does not tell anyone what or how much to take.
The digital version
The log works on paper. If you would rather not write lot numbers by hand, the free Varsity Stack app does the same job on your phone: scan a barcode, check the product against our certification database, and track what you take each day. Download Varsity Stack.
Varsity Stack does not laboratory test supplements, and no certification guarantees a negative drug test. A certified product lowers the risk. It does not remove it [1].
This article is for educational purposes only. Consult a qualified healthcare provider or registered dietitian before starting any supplement regimen.
Sources
- NCAA, 2026 to 27 NCAA Banned Substances
- NIH Office of Dietary Supplements, Dietary Supplements: What You Need to Know
- NSF Certified for Sport
- Informed Sport, Athletes
- NFHS Sports Medicine Advisory Committee, Position Statement on Appearance and Performance Enhancing Drugs and Substances (October 2024)
