• Loading stock data...
Friday, July 25, 2025

Celsius Won’t Cause Positive Cocaine Tests for Baseball Players

Some minor leaguers thought Celsius would cause a positive drug test for cocaine, causing a viral tweet and strong denial from the company.

Celsius
Mark J. Rebilas-Imagn Images

Tigers prospect writer Emily Waldon was talking to professional baseball players recently, and came back with some unusual advice: 

Make sure your energy drink doesn’t make you test positive for cocaine.

Waldon wrote Sunday that West Michigan Whitecaps players were discussing “MLB-approved energy drinks” in the dugout.

“Was told MLB provides a list of drinks that have been tested to not flag during drug testing. Most popular among the West Michigan [Whitecaps] players on the acceptable drinks list: C4 and Red Bull,” she posted on X. “Celsius has an ingredient known to flag as cocaine in MLB drug testing and although it’s not officially banned, it’s ‘strongly discouraged,’ I’m told.”

The Whitecaps are the Tigers’ High-A affiliate, one level below the Erie SeaWolves of recent “Last Week Tonight with John Oliver” fame. Waldon later deleted the tweet, though not before it rocketed around social media, and told Front Office Sports she didn’t have any more information to provide besides players hearing that Celsius could cause a positive drug test.

MLB and the MLBPA each tell FOS they only recommend and provide drinks to players that are NSF Certified for Sport, a list that includes C4 and Red Bull but not Celsius. Both the league and union said they are “not aware of any specific ingredient in Celsius that would cause a positive test result, and have not communicated this view to any Club or player.” The entities said they believe non-certified energy drinks are “risky to consume” and that players are “urged” to only have ones from the list.

NSF did not respond to questions about why Celsius is left off its Certified for Sport list.

“I don’t really know what would cause a positive cocaine screening from drinking that energy drink, unless you were also drinking cocaine,” Dr. Peter Chai, an associate professor of emergency medicine and medical toxicology at Harvard’s Brigham and Women’s Hospital, tells FOS. “Celsius itself, as far as I know from looking at the ingredient list, does not have a component that would trigger a urine drug screen.”

A WhiteCaps spokesperson says they didn’t tell players Celsius could cause a positive test for cocaine, saying they “are not involved in player nutrition and would not have any insight” into the situation.

A spokesperson for Celsius denies the “spurious second-hand claim” that the drink could cause a positive test for cocaine.

“Celsius is completely safe and is enjoyed by professional athletes, fitness enthusiasts, and college students as part of their fit lifestyles,” says the spokesperson in a statement to FOS. “Claims that Celsius could cause one to fail a drug test have been proven false, and there is no merit to these claims.”

My colleague Alex Schiffer volunteered himself for a one-person experiment, starting at a Duane Reade near the FOS Manhattan office. He purchased a drug test and sparkling orange flavored Celsius, drank it, and self-administered the test. The 12-ounce can contains 200 milligrams of caffeine and came back negative for cocaine and the six other substances on the panel—amphetamines, ecstasy, marijuana, methamphetamine, opiates, and phencyclidine, also known as PCP.

The NBA and WNBA don’t have a list of banned consumer drinks or food products, a person familiar with the leagues tells FOS. An NWSL spokesperson said the league doesn’t have an approved drink list, and an NFLPA spokesperson said they weren’t aware of any list.

MLB administers more than 11,000 drug tests to major league players on 40-man rosters each year and has only come up with three major league positives in the past two years, all for performance-enhancing substances. It also separately administers tests to minor league players, which led to at least 19 PED suspensions last year.

Players are tested in spring training and randomly at least once throughout the year. The “drugs of abuse” tested in the major and minor leagues are synthetic THC and cannabimimetics, cocaine, LSD, opiates and opioids, MDA, MDMA, bath salts, GHB, and PCP.

Baseball tweaked its “drugs of abuse” policy after Angels pitcher Tyler Skaggs died of a fentanyl overdose in 2019. Before 2020, there had been no random testing for opiates and other recreational drugs; now, players are tested, but the results lead to potential treatment. Before minor league players unionized and signed a collective bargaining agreement in 2023, MLB unilaterally administered the testing program; now, it’s a joint program and players can appeal any discipline.

Under MLB policy, testing positive for these substances leads to a meeting with the “Treatment Board” and potentially undergoing a “Treatment Program” that can include counseling, inpatient or outpatient treatment, alcohol tests, and follow-up drug tests. 

While getting treatment, players keep their full salary for the first 30 days, earn half salary for the next 30 days, and afterward lose their salary.

Linkedin
Whatsapp
Copy Link
Link Copied
Link Copied

What to Read

Cattle Dermatitis Outbreak Forces Tour de France Route Change

The Tour cut two climbs and shortened the stage by 35 km.
Jan 21, 2024; Philadelphia, Pennsylvania, USA; Philadelphia Flyers goaltender Samuel Ersson (33) and goaltender Carter Hart (79) watch from the bench against the Ottawa Senators during the third period at Wells Fargo Center.

NHL, NHLPA At Odds Over Five Acquitted Players From Hockey Canada Trial

The league is indefinitely barring the players despite the judge’s acquittal.

Featured Today

Ryan Field Construction
exclusive

First Look Inside Northwestern’s $862 Million New Ryan Field

Five big things FOS learned on our exclusive stadium tour.
Jul 21, 2024; Ayrshire, SCT; Xander Schauffele celebrates with Claret Jug after winning the Open Championship golf tournament at Royal Troon.
July 17, 2025

The Boozy History and Traditions of The Open’s Claret Jug

The Open awards the world’s most famous wine decanter.
2025 PDC World Darts Championship Final - Luke Littler vs Michael Van Gerwen
July 16, 2025

A Teen Darts Prodigy Is Becoming Bigger Than the Game Itself

Luke ‘The Nuke’ Littler is cashing in on his devastatingly accurate shot.
May 31, 2025; Philadelphia, PA, USA; Sydney McLaughin-Levrone (USA) reacts before the women's 100m hurdles during the Grand Slam Track Philadelphia at Franklin Field
exclusive
July 13, 2025

Track’s New Money Is Running Into Old Problems

The sport’s big-money era has hit some speed bumps in 2025.
Jul 13, 2025; Wimbledon, United Kingdom; Jannik Sinner (ITA) stands on the South West Hall balcony holding the gentlemen's singles champion trophy, after his match against Carlos Alcaraz (ESP)(not pictured) in the gentlemen's' singles final of The Championships Wimbledon 2025 at All England Lawn Tennis and Croquet Club.
July 23, 2025

Jannik Sinner Reunites With Coach Tied to Banned Doping Spray

Sinner did not miss any Grand Slams due to the ban.
Emma Meesseman
July 24, 2025

Liberty’s Meesseman Coup Is Rare Midseason Jolt to Title Race

Several team-friendly contracts helped New York sign the Belgian star.
Sponsored

Game On: Portfolio Players Stories, Brought to You by E*TRADE from Morgan Stanley

Dealmaker Jeffrey Kaplan maps the evolution of sports as an asset class
July 23, 2025

Tyrese Haliburton Says His Achilles Tear Wasn’t Caused by Workload

Haliburton spoke on “The Pat McAfee Show.”
Venus Williams
July 23, 2025

Venus Williams Becomes Oldest Player to Win WTA Singles Match In Decades

The 45-year-old Williams never technically retired.
Jonas Valanciunas
July 21, 2025

Jonas Valančiūnas Says He’ll Play for Nuggets After All

The backup center had been negotiating with Greek team Panathinaikos.
Damian Lillard
July 18, 2025

Damian Lillard Will Be Paid Record $70 Million Next Year While Rehabbing..

Lillard will make $141 million over the next two years.