carnosine gel for bjj

Five rounds in. The gas tank question.

The trial ran on rugby sevens — the closest published thing to a hard roll. What transfers to the mats, what does not, and what four grapplers reported.

By Keegan Smith · Coach educator · founder, RealMVMT · updated

Short answer

No carnosine gel has been tested on grapplers. The closest published work is rugby sevens, which shares the physiological shape of hard rounds: repeated near-maximal efforts, short incomplete rest, and performance that falls apart late rather than early. In that trial the gel raised peak power in the three sprints of twelve that reached significance — +7.6%, +8.3% and +12.3% — while mean power and perceived exertion did not move. That maps onto explosive scrambles, not onto grinding out a pin, and it will not make rounds feel easier. Four of the twelve people who wrote to us train jiu-jitsu. All four describe less drop-off late in the session and less next-day stiffness. One also reported mild headaches in his first two days. Two practical notes the trials do not cover: the 45-minute window means applying before you leave home, and menthol transfers to a training partner in constant skin contact.

Why rugby sevens is the relevant trial

A sevens match and a hard round are not the same sport. The demand is shaped the same way though: repeated near-maximal efforts, short incomplete rest, and a performance that falls apart at the end rather than the start.

That is the protocol the 2025 trial used. Twelve efforts. Six seconds flat out each. Thirty seconds rest, with a two-minute break halfway. If any published test transfers to a competitive roll, it is that one.

Peak power was higher on the gel in the three sprints that reached statistical significance: 7.6 percent in sprint 2, 8.3 percent in sprint 4 and 12.3 percent in sprint 7. Mean power, heart rate and perceived exertion were unchanged. All four were measured in the same trial.no changePeak power, sprints 2, 4 and 7+7.6 to +12.3%Mean powerno changeHeart rateno changePerceived exertionno change0+5%+10%
Seven world-class rugby sevens players, against a placebo matched for menthol. The peak power bar spans the three sprints that reached significance — +7.6% (d = 0.99), +8.3% (d = 0.74) and +12.3% (d = 0.98). Across all twelve the difference ran from +4.1% to +12.3%. The other three measures are on the chart too, sitting on zero, because showing everything a trial measured is what makes the one that moved believable. Beaven et al. 2025, JISSN.

What the grapplers in our group reported

Four of the twelve people who wrote back to us train jiu-jitsu. None were blinded. All knew what they were putting on. None were asked a question from a list.

  • Eamon F., one week in: waking with less shoulder pain and recovering faster between rounds. He gave the rest of his first bottle to his head coach.
  • Anthony T.: applied it before Saturday training and had a gas tank where he would normally start playing defensively from fatigue. Barely any stiffness on Sunday. He also reported mild headaches over the first two days and suspected he had dehydrated himself.
  • Daniel H.: rolled an ankle dunking, applied it over the foot and ankle, and trained a full session. He checked for residue and found none.
  • Joe E., on the strength side: applied every two hours across a hard weekend, and self-rated soreness roughly halved with each application.
More work at the same effort: 7 of 12. Less next-day soreness: 6 of 12. Faster recovery between efforts: 4 of 12. Moved or trained when they otherwise would not: 2 of 12. Slept better: 2 of 12.More work at the same effort7Less next-day soreness6Faster recovery between efforts4Moved or trained when they otherwise would not2Slept better2
Counted across all 12 reports; most describe more than one thing. The five categories are ours, not the athletes’ — we read each report and tagged it. Nobody was asked a question from a list, which is exactly why this is a description of what people volunteered and not a survey result.

Not one person in that group reported nothing. That should make you suspicious rather than confident. These are people who chose to test it and then chose to write in. Everyone who felt nothing and said nothing is invisible here.

The gi problem, and other practical notes

  • The timing does not fit a normal class. The trials applied it 45 minutes before the first hard effort. That means putting it on before you leave, not in the changing room.
  • Menthol transfers. On the mats you are in constant skin contact with a partner, and menthol in somebody else’s eyes is a real problem. The menthol-free version exists for a reason.
  • Residue matters more here than in a gym. A greasy gel on a gi or on the mats is something your training partners will raise before you do.
  • Carnosine is not on the WADA prohibited list, and the product carries Informed Sport batch certification. If you compete under IBJJF or an affiliated body, check your own batch number with the certifying body rather than taking a website’s word for it.

Honest answer for a grappler

It has never been tested on anyone doing what you do. The nearest trial moved one number by a small amount in seven athletes, and that number is the one governing explosive efforts late in a session.

If you want to know whether it works for you, do what Skye E. did instead of trusting a review page. Run the same session twice, a week apart. Same warm-up, same rounds, gel on the second one only. It is not blinded and it settles nothing for anyone else. It settles it for you, which is the only question you actually asked.

Sources

  1. Topical carnosine gel improves intermittent high-intensity exercise performance in world-class rugby sevens players (Journal of the International Society of Sports Nutrition, 2025) (opens in a new tab) PMC12427510

    The repeated-sprint protocol that resembles hard rounds, the 8–12% peak power result, and the three measures that did not move.

  2. Transdermal carnosine gel fails to improve repeated Wingate performance in trained male cyclists (Journal of Sports Science and Nutrition, 2023) (opens in a new tab) 10.33545/27077012.2023.v4.i2b.193

    The trial in trained cyclists that found no effect. Any page recommending this to grapplers should say it exists.

  3. Acute topical menthol application and exercise performance — systematic review and meta-analysis (opens in a new tab) ro.ecu.edu.au

    What the menthol in the standard version does on its own — which matters when you are in skin contact with a partner for an hour.

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Carnosine gel for BJJ — Topical Carnosine