Renato Canuto Suspended For Modafinil — A 'Focus Drug' That The BJJ Community Pretended Never Worked

The Nevada Athletic Commission temporarily suspended Renato Canuto following a post-bout test from his March 13 win at Tuff-N-Uff 152 that came back positive for modafinil and its metabolites, according to BJJ Doc. Canuto had knocked out Dylan Aparis at 1:45 of round one, run his MMA record to 4-0, and found himself at home explaining the contents of a supplement he'd reviewed days before the fight.

His statement: "I never knowingly or intentionally used any banned substance, nor did I seek to gain any unfair advantage."

Sure. Sure.

What made the case actually significant was that modafinil was the only PED in the entire conversation that the BJJ community actively pretended didn't work. Steroids had always been the third rail. Everyone had a take. Peptides got their RFK Jr.-on-Rogan moment. Even açaí got dragged into the discourse. Modafinil—a wakefulness drug developed for narcolepsy and shift-work sleep disorder, originally fielded by the Air Force, perpetually re-stacked by every Silicon Valley founder who ever optimized a morning routine—somehow got a pass.

It shouldn't have.

What modafinil actually did

Modafinil wasn't an amphetamine-style stimulant. It worked on dopamine and orexin pathways and produced what users described as a kind of laser-focus uptime. Air Force pilots used it for 36-hour missions. Med students crammed on it. Shift nurses got prescribed it for the graveyard. WADA banned it in-competition because of its stimulant classification, and the NSAC tested for it because the people writing PED protocols figured out a long time ago that "I just feel really clear" was a competitive advantage.

A six-minute round in a Tuff-N-Uff cage. A ten-minute Pans final where one frame-grip read could decide the back take. A mid-third-round scramble where the choice between rolling out to giftwrap or stalling for a stand-up would define your career. The difference between attempting that triangle on your second cup of coffee and attempting it on the dose an Air Force pilot would take showed up in the stats.

The community pattern

The BJJ world had always responded the same way to PED allegations.

When Bo Nickal, Gordon Ryan, or any of the 'obvious' guys got accused of being on a cycle, the discourse erupted for three weeks. Photos got cropped. Forearms got measured. Estrogen jokes happened.

When Dustin Poirier admitted to using peptides, there was a national conversation about peptide rules and FDA reclassification.

When the @bjj_steroids account jumped from 7K to 13K followers in a weekend after picking a fight with Atos in the stands at IBJJF Worlds, the response was to argue about whether the call-outs were unfair to specific guys.

When somebody popped for a focus drug, the response was silence, a shrug, and a 'well, his supplement was contaminated.' Which it might have been. The supplements industry was a regulatory black hole and 'WADA logo on the website' had become the new 'clinically proven.' But pretending modafinil was some weird outlier, and not the obvious cognitive equivalent of a tactical advantage, was the part of the conversation the community kept skipping.

The 'I reviewed the label' defense

Canuto's defense was the same one everyone gave. The supplement had a WADA logo on the company website. He'd read the ingredient list. He didn't know it had a modafinil-related compound in it. The label, allegedly, was a lie.

This might have been true. It also might have been true the way it was true for the last eighteen guys who said it. The real point wasn't whether Canuto specifically was trying to cheat. The point was the structure: athletes who got caught cited a contaminated supplement, the commission accepted the explanation or didn't, the suspension dropped, the conversation moved on, and the next athlete tested positive for the same compound from the same category of supplement six weeks later.

If you wondered why the same handful of preworkouts kept showing up in failed PED tests, it was because PED-adjacent compounds were still profitable to slip into preworkouts. The label was a marketing document. The COA was an honor system. The athletes got suspended; the brand kept selling.

Where this fit

This was happening in the same six-week window where:

• Mikey Musumeci announced UFC BJJ would PED-test title fights by year-end.
• The Tackett brothers acknowledged UFC BJJ testing was coming and they were preparing for it.
• Gordon Ryan retired at 30 with a stomach health crisis his rival Tye Ruotolo summarized as 'steroids aren't good for longevity.'
• The FDA reclassified 14 peptides after RFK Jr. went on Rogan and Poirier admitted use.
• @bjj_steroids picked a fight with Atos at Worlds and grew its audience by 6K in a week.

Canuto getting caught for a focus drug wasn't a footnote in this. It was the part of the story the community kept forgetting to write down. Sport jiu-jitsu had been pretending the ceiling on cognitive doping was 'double espresso' the same way it pretended the ceiling on physical doping was 'açaí' for thirty years. Both pretenses were now over.

What came next

Canuto was 4-0 in MMA. He ran Hybrid Jiu-Jitsu in Las Vegas with his wife. He was a four-time IBJJF world champion who came up under his father at Checkmat, and he'd won the UFC Fight Pass Invitational 10 in March 2025. He had an academy, a paying job, and a genuine path to a UFC contract. The temporary suspension would probably finish, the statement would get filed, the next supplement his nutritionist recommended would probably come from a different distributor, and life would resume.

But the next time someone mentioned a black belt who suddenly seemed 'really dialed in' lately, really locked in at the eight-minute mark of the absolute final, and the rest of the gym laughed and said 'yeah, must be a great breakfast,' Canuto's positive test was the name to remember. The Air Force pilots. The reason the NSAC tested for it.

The BJJ community had had hard conversations about every other PED on the table. The conversation about focus drugs, the one Canuto's positive test put a name on, kept being the one people walked past.

Maybe that was because everyone in the gym had, at minimum, heard a teammate mention they 'took something to help concentrate' before a tournament.

Maybe it was because the line between 'preworkout from a normal store' and 'preworkout that pops a urine test' was being drawn by the manufacturer's marketing department.

Or maybe, and stay with it, modafinil worked.

This post was generated by AI. Sources are linked below. Follow @bjj-problems on YouTube for the weekly video digest.

Sources

• BJJ Black Belt and Aspiring MMA Star Renato Canuto Announces PED Suspension — BJJ Doc
• Renato Canuto Suspended For Positive Test — Jits Magazine
• Tuff-N-Uff 152 Event Results — Sherdog
• Renato 'The Hybrid' Canuto MMA Fighter Page — Tapology
• BJJ Black Belt Renato Canuto is now 4-0 in MMA — BJJ Doc