Ranked UFC Strawweight Jaqueline Amorim Suspended for Ostarine
CSAD suspends No. 13 strawweight Jaqueline Amorim for six months after two positive Ostarine tests.
Ranked UFC strawweight Jaqueline Amorim has been suspended for six months after testing positive for Ostarine, the same banned substance that tripped up Sean O'Malley years ago.
The Combat Sports Anti-Doping agency announced that Amorim, ranked No. 13 at 115 pounds, failed two out-of-competition drug tests collected on July 29 and August 17, 2026, in Fort Lauderdale, Florida. The second sample was collected before Amorim was even notified about the first positive, so CSAD combined both into a single violation.
Ostarine is classified as a prohibited non-Specified Substance in the class of Anabolic Agents and is banned at all times under the UFC Anti-Doping Policy.
CSAD concluded the results were consistent with low-level contamination rather than intentional use. The agency cited Amorim's clean testing history, the low levels detected in both samples, and her use of multiple dietary supplements that were not third-party tested and certified. Ostarine contamination in supplements is widely documented worldwide, per CSAD.
Amorim cooperated fully with the investigation. CSAD found no evidence of significant performance advantage and used its discretion to impose a reduced six-month suspension. Her ineligibility began August 17 and runs through February 17, 2027.
The 31-year-old Brazilian joined the UFC in 2023 after winning the LFA women's strawweight title and has compiled a 5-2 UFC record. Her overall professional mark stands at 11-2, with all 11 wins coming by stoppage and nine of those by submission. She is one of the most dangerous finishers in the division when she is eligible to compete.
Here we go again. Another UFC fighter pops for Ostarine, another tainted supplement story, another six-month vacation. At this point CSAD might as well put Ostarine warnings on every protein powder in the fighters' lounge.
I believe Amorim. Low levels, clean history, full cooperation. The contamination pattern matches what we have seen over and over in this sport. But that is exactly the problem. Fighters know these supplements are a minefield and they keep rolling the dice on brands that are not third-party certified. Six months off the rankings for a contender at 115 pounds is not nothing.
The bright side for Amorim is that she comes back in February and her finishing ability, nine submissions in 11 wins, means she can make up ground fast. But the UFC's supplement education program clearly is not landing if fighters keep getting caught in the same trap.
