BOULDER, CO - OCTOBER 28:  Presidential candidate Ben Carson looks on during the CNBC Republican Presidential Debate at University of Colorados Coors Events Center October 28, 2015 in Boulder, Colorado.  Fourteen Republican presidential candidates are participating in the third set of Republican presidential debates.  (Photo by Justin Sullivan/Getty Images)
Justin Sullivan/Getty Images
BOULDER, CO - OCTOBER 28: Presidential candidate Ben Carson looks on during the CNBC Republican Presidential Debate at University of Colorados Coors Events Center October 28, 2015 in Boulder, Colorado. Fourteen Republican presidential candidates are participating in the third set of Republican presidential debates. (Photo by Justin Sullivan/Getty Images)
Now playing
04:54
Carson's ties to health-supplement company
ben carson brett kavanaugh allegation fabians bts vpx _00000310.jpg
pool
ben carson brett kavanaugh allegation fabians bts vpx _00000310.jpg
Now playing
01:08
Carson on big picture of Kavanaugh allegation
House Appropriations HRG: FY2019 HUD Budget (Secy Carson testifies)  FY19 Budget - Department of Housing and Urban Development   Witness The Honorable Ben Carson  Secretary Department of Housing and Urban Development
POOL
House Appropriations HRG: FY2019 HUD Budget (Secy Carson testifies) FY19 Budget - Department of Housing and Urban Development Witness The Honorable Ben Carson Secretary Department of Housing and Urban Development
Now playing
02:28
Carson confronted about furniture cost
ben carson calls slaves immigrants sot_00014312.jpg
ben carson calls slaves immigrants sot_00014312.jpg
Now playing
01:51
Ben Carson refers to slaves as immigrants
US Secretary of Housing and Urban Development Ben Carson (L) is congratulated by US Vice President Mike Pence (R) as his wife Candy Carson (2L) and granddaughter Tesora Carson watch during his swearing in ceremony in the Eisenhower Executive Office Building on March 2, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski        (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
BRENDAN SMIALOWSKI/AFP/Getty Images
US Secretary of Housing and Urban Development Ben Carson (L) is congratulated by US Vice President Mike Pence (R) as his wife Candy Carson (2L) and granddaughter Tesora Carson watch during his swearing in ceremony in the Eisenhower Executive Office Building on March 2, 2017 in Washington, DC. / AFP PHOTO / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Now playing
02:52
Did Ben Carson lie about $31K dining set?
MIAMI, FL - APRIL 12:  U.S. Housing and Urban Development  Secretary Ben Carson visits Colllins Park apartment complex on April 12, 2017 in Miami, Florida.  Secretary Carson is on a national listening tour to hear from the people and organizations who rely on and support public housing. (Photo by Joe Raedle/Getty Images)
Joe Raedle/Getty Images North America/Getty Images
MIAMI, FL - APRIL 12: U.S. Housing and Urban Development Secretary Ben Carson visits Colllins Park apartment complex on April 12, 2017 in Miami, Florida. Secretary Carson is on a national listening tour to hear from the people and organizations who rely on and support public housing. (Photo by Joe Raedle/Getty Images)
Now playing
00:48
Ben Carson gets trapped in elevator
Ben Carson HUD hearing qualifications_00000000.jpg
Pool
Ben Carson HUD hearing qualifications_00000000.jpg
Now playing
01:45
Dr. Ben Carson addresses HUD qualifications
EXETER, NH - SEPTEMBER 30: September 30, 2015 in Exeter, New Hampshire. Carson has risen in the most recent polls to pull almost even with front runner Donald Trump.
Darren McCollester/Getty Images
EXETER, NH - SEPTEMBER 30: September 30, 2015 in Exeter, New Hampshire. Carson has risen in the most recent polls to pull almost even with front runner Donald Trump.
Now playing
00:51
Friend: Carson didn't live in public housing
WASHINGTON, DC - MARCH 2:  Ben Carson speaks after being sworn in as secretary of housing and urban development  by Vice President Mike Pence on March 2, 2017 in Washington, DC.  (Photo by Olivier Douliery-Pool/Getty Images)
Pool/Getty Images
WASHINGTON, DC - MARCH 2: Ben Carson speaks after being sworn in as secretary of housing and urban development by Vice President Mike Pence on March 2, 2017 in Washington, DC. (Photo by Olivier Douliery-Pool/Getty Images)
Now playing
01:12
Ben Carson's surprising path into politics
Saul Loeb/AFP/Getty Images
Now playing
00:45
Ben Carson: Poverty is a state of mind
Now playing
01:12
Rep. Waters presses Ben Carson on Puerto Rico
CNN
Now playing
02:12
Pundit likens Carson to Wu-Tang Clan rapper
Carson Obama raised white politico nr_00003205.jpg
CNN
Carson Obama raised white politico nr_00003205.jpg
Now playing
01:25
Ben Carson: Obama was 'raised white'
WASHINGTON, DC - FEBRUARY 03:  Republican Presidential candidate Dr. Ben Carson speaks to the media at the National Press Club February 3, 2016 in Washington, DC.  (Photo by Mark Wilson/Getty Images)
Mark Wilson/Getty Images North America/Getty Images
WASHINGTON, DC - FEBRUARY 03: Republican Presidential candidate Dr. Ben Carson speaks to the media at the National Press Club February 3, 2016 in Washington, DC. (Photo by Mark Wilson/Getty Images)
Now playing
00:49
Ben Carson suggests medical ways to extract information
Ben Carson muslim donald trump intv tapper lead_00000102.jpg
Ben Carson muslim donald trump intv tapper lead_00000102.jpg
Now playing
02:10
Ben Carson: All U.S. visitors should be registered
ben carson syrian refugee camp visit sot SOTU_00005312.jpg
Ben Carson for President 2016
ben carson syrian refugee camp visit sot SOTU_00005312.jpg
Now playing
02:37
Carson: Refugees' true desire 'to be resettled in Syria'
(CNN) —  

In Wednesday’s CNBC Republican presidential debate, Ben Carson was asked about his involvement with Mannatech, a dietary supplement maker.

In 2009, Mannatech settled for $7 million following a lawsuit brought by the Texas attorney general over the company’s claims that its products could cure cancer and autism. CNBC moderator Carl Quintanilla claimed Carson had a 10-year-long connection with the company and that it continued even after the settlement.

Carson denied the accusation, saying, “That is total propaganda … I did a couple speeches for them, I do speeches for other people, they were paid speeches. It is absolutely absurd to say that I had any kind of relationship with them.”

Carson’s statement directly contradicts promotional material that came from Mannatech, as well as his own business manager Armstrong Williams, who described Carson’s relationship to the company in an interview Thursday on “The Lead with Jake Tapper.”

Williams defended his boss, suggesting that while Carson did have a relationship to the company, the retired neurosurgeon didn’t realize all of the details of his endorsement up front and wanted out of the deal.

“He said ‘I don’t believe in this. I’m not going to do it,’” Williams said, recalling negotiations with the company over the endorsement. “When that was over, he made it clear to me, ‘You need to get me out of this, I’m not going to do this again,’ and it was over.’”

The Wall Street Journal this month reported on Carson’s connection with Mannatech, saying Carson has said he has taken the company’s supplements for more than a decade.

The WSJ also cited a 2004 video of Carson speaking at a Mannatech event. In the video, he credited the company’s products for his prostate cancer diagnosis symptoms disappearing. The paper points out that Carson is now “cancer-free after surgery.”

The WSJ reports Carson has appeared in videos that were on Mannatech’s website until earlier this month. The videos were removed soon after the Journal’s reporting. The paper also reported that Carson gave four paid speeches at company events; the most recent was in 2013 for which Carson was paid $42,000.

Carson’s campaign manager, Barry Bennett, told the WSJ Carson is a “believer in vitamins and supplements.”

CNBC moderator Quintanilla also pointed out Carson’s image was on the Mannatech website’s homepage, with the firm’s logo prominently displayed over his shoulder. Carson said, “If somebody put me on the homepage, they did it without my permission.” When Quintanilla then asked, “Does that not speak to your vetting process or judgment in any way?” Carson started to respond, “No, it speaks to the fact that I don’t know those –” and was interrupted by audience boos apparently directed at the moderator. Carson concluded, “See, they know.”

Despite Carson’s denial in the debate, he admitted that he did paid speeches for Mannatech, and credited the company’s products for his cancer symptoms disappearing and his image appeared on the firm’s website as recently as 2014 – so it appears he was very much involved with the company even after its 2009 settlement over false advertising.