Fact Check: Ivermectin Is NOT Proven 'Effective' Against Omicron Variant In Phase 3 Clinical Trials -- Reuters 'Misstated' Drug Company News Release

Fact Check

  • by: Ed Payne
Fact Check: Ivermectin Is NOT Proven 'Effective' Against Omicron Variant In Phase 3 Clinical Trials -- Reuters 'Misstated' Drug Company News Release Lab ≠ Reality

Is ivermectin "effective" against the omicron variant of COVID-19 in Phase 3 clinical trials? No, that hasn't been proven: The incorrect information comes from a January 31, 2022, Reuters story that was later updated by the news organization. The original story misstated that ivermectin was "effective" against omicron in Phase 3 clinical trials, which are conducted in humans. The story was corrected to say that the "anti-parasite drug ivermectin showed an 'antiviral effect' against Omicron and other coronavirus variants in joint non-clinical research," which is conducted in a lab. Despite the update, COVID skeptics and anti-vaccine activists shared the outdated information to back their cause.

The claim appeared in a Facebook post (archived here) by "The Joe Rogan Experience Podcast" on January 31, 2022. It opened:

Well, lookie here...

The post, which is a screenshot of a tweet later deleted by Rogan, then quotes another tweet (archived here) by Disclose.tv:

JUST IN - Japan's Kowa in partnership with Kitasato University at Tokyo Medical University says ivermectin is effective against Omicron in phase III trial.

This is what the post looked like on Facebook on February 1, 2022:

Joe Rogan.png

(Source: Facebook screenshot taken on Tue Feb 1 19:06:08 2022 UTC)

Podcaster Joe Rogan tweeted the outdated information from the Reuters story hours after it was corrected. The last update shown for the article at the time of publication was January 31, 2022, at 2:30 p.m. EST on the Reuters website:


(Source: Reuters screenshot taken on Tue Feb 1 22:47:28 2022 UTC)

The timestamp on the Joe Rogan tweet is 11:34 a.m. on February 1, 2022. The screenshot of the post was taken in Australia, where The Joe Rogan Experience Podcast, a fan page of the show, is based. In Australia, they reverse the month and date. In the United States, February 1, 2022, would be written 2/1/2022, but in Australia, it would be 1/2/2022. That's the way it appears in the Facebook post from earlier in this fact check. Taking into account the time difference, the post was made on the evening of January 31, 2022, in the United States, still hours after the correction appeared on the Reuters website.

The Reuters story was based on a news release by Kowa, a Japanese pharmaceuticals company. The release, translated from Japanese through Google Translate, says Kowa is conducting a Phase 3 human trial of ivermectin as a possible treatment for COVID. Those results aren't known yet. The release also says the anti-parasite drug showed an "antiviral effect" against omicron and other coronavirus variants in the lab. While many drugs have proven to work in a test tube, the outcome often can't be replicated in the human body.

In its updated version, Reuters said, "The original Reuters story misstated that ivermectin was 'effective' against Omicron in Phase III clinical trials, which are conducted in humans. Clinical trials are ongoing, but promotion of ivermectin as a COVID-19 treatment has generated controversy."

Ivermectin is a widely prescribed medicine around the world. Ivermectin tablets are approved by the U.S. Food and Drug Administration to treat certain infections caused by internal and external parasites. In addition, some topical forms of ivermectin are approved to treat external parasites like head lice and for skin conditions such as rosacea. The drug is not approved to treat any viral infection. On August 26, 2021, the Centers for Disease Control and Prevention issued an official health alert:

Ivermectin is not authorized or approved by FDA for prevention or treatment of COVID-19. The National Institutes of Health's (NIH) COVID-19 Treatment Guidelines Panel has also determined that there are currently insufficient data to recommend ivermectin for treatment of COVID-19.

Want to inform others about the accuracy of this story?

See who is sharing it (it might even be your friends...) and leave the link in the comments.:

Lead Stories is working with the CoronaVirusFacts/DatosCoronaVirus Alliance, a coalition of more than 100 fact-checkers who are fighting misinformation related to the COVID-19 pandemic. Learn more about the alliance here.

  Ed Payne

Ed Payne is a staff writer at Lead Stories. He is an Emmy Award-winning journalist as part of CNN’s coverage of 9/11. Ed worked at CNN for nearly 24 years with the CNN Radio Network and CNN Digital. Most recently, he was a Digital Senior Producer for Gray Television’s Digital Content Center, the company’s digital news hub for 100+ TV stations. Ed also worked as a writer and editor for WebMD. In addition to his journalistic endeavors, Ed is the author of two children’s book series: “The Daily Rounds of a Hound” and “Vail’s Tales.” 

Read more about or contact Ed Payne

About Us

International Fact-Checking Organization Meta Third-Party Fact Checker

Lead Stories is a fact checking website that is always looking for the latest false, misleading, deceptive or inaccurate stories, videos or images going viral on the internet.
Spotted something? Let us know!.

Lead Stories is a:


Subscribe to our newsletter

* indicates required

Please select all the ways you would like to hear from Lead Stories LLC:

You can unsubscribe at any time by clicking the link in the footer of our emails. For information about our privacy practices, please visit our website.

We use Mailchimp as our marketing platform. By clicking below to subscribe, you acknowledge that your information will be transferred to Mailchimp for processing. Learn more about Mailchimp's privacy practices here.

Most Read

Most Recent

Share your opinion